| 委任届数 | 名字 | 党派 | 委任起始日 | 委任终止日 | Major/Min | Rank | Senior Party Member | Committee Seniority | Committee Period of Service | Committee status at end of this Congress | Committee continuity of assignment in next Congress | Appointment Citation | District | Committee Name | Notes |
| 110 | Harkin, Tom | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 22 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Leahy, Patrick J. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 33 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Conrad, Kent | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Baucus, Max | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Lincoln, Blanche Lambert | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Stabenow, Deborah Ann | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Nelson, Earl Benjamin (Ben) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Salazar, Kenneth Lee | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | Appointed U.S. Secretary of the Interior |
| 110 | Brown, Sherrod | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Casey, Robert P., Jr. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Klobuchar, Amy | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Chambliss, Saxby | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Lugar, Richard G. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 31 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Cochran, Thad | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | McConnell, Mitch | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 22 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Roberts, Pat | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Graham, Lindsey O. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | Transferred to Homeland Security and Governmental Affairs and to Aging |
| 110 | Coleman, Norm | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | Defeated for reelection |
| 110 | Crapo, Michael Dean | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | Transferred to Environment and Public Works and to Indian Affairs |
| 110 | Thune, John | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Grassley, Charles E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 10 | Inapplicable | 5 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 110 | Byrd, Robert C. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 49 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Appropriations | 无 |
| 110 | Inouye, Daniel K. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 37 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Appropriations | 无 |
| 110 | Leahy, Patrick J. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 30 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Appropriations | 无 |
| 110 | Harkin, Tom | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 22 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Appropriations | 无 |
| 110 | Mikulski, Barbara A. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Appropriations | 无 |
| 110 | Kohl, Herbert H. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Appropriations | 无 |
| 110 | Murray, Patty | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Appropriations | 无 |
| 110 | Dorgan, Byron | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Appropriations | 无 |
| 110 | Feinstein, Dianne | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 9 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Appropriations | 无 |
| 110 | Durbin, Richard J. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Appropriations | 无 |
| 110 | Johnson, Tim | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 11 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Appropriations | 无 |
| 110 | Landrieu, Mary L. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 12 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Appropriations | 无 |
| 110 | Reed, Jack | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 13 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Appropriations | 无 |
| 110 | Lautenberg, Frank R. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 14 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Appropriations | 无 |
| 110 | Nelson, Earl Benjamin (Ben) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 15 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Appropriations | 无 |
| 110 | Cochran, Thad | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 27 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Appropriations | 无 |
| 110 | Stevens, Ted | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 35 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Appropriations | Defeated for reelection |
| 110 | Specter, Arlen | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 27 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Appropriations | 无 |
| 110 | Domenici, Pete V. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 25 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Appropriations | Retired from the Senate at the end of the Congress |
| 110 | Bond, Christopher S. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Appropriations | 无 |
| 110 | McConnell, Mitch | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Appropriations | 无 |
| 110 | Shelby, Richard C. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Appropriations | 无 |
| 110 | Gregg, Judd | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Appropriations | 无 |
| 110 | Bennett, Robert F. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Appropriations | 无 |
| 110 | Craig, Larry E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 10 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Appropriations | Retired from the Senate at the end of the Congress |
| 110 | Hutchison, Kay Bailey | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 11 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Appropriations | 无 |
| 110 | Brownback, Samuel Dale | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 12 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Appropriations | 无 |
| 110 | Allard, Wayne | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 13 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Appropriations | Retired from the Senate at the end of the Congress |
| 110 | Alexander, Lamar | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 14 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Appropriations | 无 |
| 110 | Levin, Carl | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Armed Services | 无 |
| 110 | Kennedy, Edward M. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 25 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Armed Services | 无 |
| 110 | Byrd, Robert C. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Armed Services | 无 |
| 110 | Lieberman, Joseph I. | Independent | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Armed Services | Lieberman caucused with the Democrats, so is classified with the majority party members. |
| 110 | Reed, Jack | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Armed Services | 无 |
| 110 | Akaka, Daniel K. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Armed Services | 无 |
| 110 | Nelson, Clarence William (Bill) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Armed Services | 无 |
| 110 | Nelson, Earl Benjamin (Ben) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Armed Services | 无 |
| 110 | Bayh, Evan | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Armed Services | 无 |
| 110 | Clinton, Hillary Rodham | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Armed Services | Appointed U.S. Secretary of State |
| 110 | Pryor, Mark | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 11 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 2nd Class | Armed Services | Transferred to Appropriations |
| 110 | Webb, Jim | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Armed Services | 无 |
| 110 | McCaskill, Claire | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 13 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Armed Services | 无 |
| 110 | McCain, John | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Armed Services | 无 |
| 110 | Warner, John W. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Armed Services | Retired from the Senate at the end of the Congress |
| 110 | Inhofe, James M. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Armed Services | 无 |
| 110 | Sessions, Jeff | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Armed Services | 无 |
| 110 | Collins, Susan | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Armed Services | 无 |
| 110 | Ensign, John Eric | Republican | 2007年1月12日 | 2007年7月17日 | Minority | 6 | Inapplicable | 5 | Only period of service | Transferred to another committee | Continues in congress, but not committee | S. Res. 28 | Senate, 1st Class | Armed Services | Transferred to Finance |
| 110 | Chambliss, Saxby | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Armed Services | 无 |
| 110 | Graham, Lindsey O. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Armed Services | 无 |
| 110 | Dole, Elizabeth Hanford | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Armed Services | Defeated for reelection |
| 110 | Cornyn, John | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 10 | Inapplicable | 5 | First period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 1st Class | Armed Services | Transferred to Finance |
| 110 | Thune, John | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 11 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Armed Services | 无 |
| 110 | Martinez, Melquiades R. (Mel) | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Armed Services | 无 |
| 110 | Corker, Bob | Republican | 2007年7月17日 | 2008年1月24日 | | 1 | Inapplicable | 1 | Only period of service | | Continues in congress, but not committee | S. Res. 225 | Senate, 1st Class | Armed Services | Replaced Ensign |
| 110 | Wicker, Roger F. | Republican | 2008年1月24日 | 2009年1月21日 | | 2 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES425 | Senate, 1st Class | Armed Services | Replaced Corker |
| 110 | Dodd, Christopher, J | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 27 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Johnson, Tim | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Reed, Jack | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Schumer, Charles Ellis (Chuck) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Bayh, Evan | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Carper, Thomas Richard | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Banking, Housing, and Urban Affairs | Transferred to Finance |
| 110 | Menendez, Robert | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Akaka, Daniel K. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 1 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Brown, Sherrod | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Casey, Robert P., Jr. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Banking, Housing, and Urban Affairs | Transferred to Health, Education, Labor, and Pensions |
| 110 | Tester, Jon | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Shelby, Richard C. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Bennett, Robert F. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Allard, Wayne | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | Retired from the Senate at the end of the Congress |
| 110 | Enzi, Michael B. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | Transferred to Finance |
| 110 | Hagel, Chuck | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | Retired from the Senate at the end of the Congress |
| 110 | Bunning, James Paul David | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Crapo, Michael Dean | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Sununu, John E. | Republican | 2007年1月12日 | 2008年1月24日 | Minority | 8 | Inapplicable | 5 | Only period of service | Transferred to another committee | Inapplicable | S. Res. 28 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | Transferred to Finance |
| 110 | Dole, Elizabeth Hanford | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | Defeated for reelection |
| 110 | Martinez, Melquiades R. (Mel) | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 10 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 110 | Corker, Bob | Republican | 2008年1月24日 | 2009年1月21日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES425 | Senate, 1st Class | Banking, Housing, and Urban Affairs | Replaced Sununu |
| 110 | Conrad, Kent | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Budget | 无 |
| 110 | Murray, Patty | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Budget | 无 |
| 110 | Wyden, Ron | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 12 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Budget | 无 |
| 110 | Feingold, Russel D. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Budget | 无 |
| 110 | Byrd, Robert C. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Budget | 无 |
| 110 | Nelson, Clarence William (Bill) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Budget | 无 |
| 110 | Stabenow, Deborah Ann | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Budget | 无 |
| 110 | Menendez, Robert | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Budget | 无 |
| 110 | Cardin, Benjamin L. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Budget | 无 |
| 110 | Lautenberg, Frank R. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 2nd Class | Budget | Left committee for no other |
| 110 | Sanders, Bernard | Independent | 2007年1月12日 | 2009年1月21日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Budget | 无 |
| 110 | Whitehouse, Sheldon | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Budget | 无 |
| 110 | Gregg, Judd | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Budget | 无 |
| 110 | Domenici, Pete V. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 33 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Budget | Retired from the Senate at the end of the Congress |
| 110 | Grassley, Charles E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 27 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Budget | 无 |
| 110 | Allard, Wayne | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Budget | Retired from the Senate at the end of the Congress |
| 110 | Enzi, Michael B. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Budget | 无 |
| 110 | Sessions, Jeff | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Budget | 无 |
| 110 | Bunning, James Paul David | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Budget | 无 |
| 110 | Crapo, Michael Dean | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Budget | 无 |
| 110 | Ensign, John Eric | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Budget | 无 |
| 110 | Cornyn, John | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 10 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Budget | 无 |
| 110 | Graham, Lindsey O. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 12 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Budget | 无 |
| 110 | Inouye, Daniel K. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 39 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 110 | Rockefeller, John D., IV | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 22 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 110 | Kerry, John F. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 110 | Dorgan, Byron | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 110 | Boxer, Barbara | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 110 | Nelson, Clarence William (Bill) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 110 | Cantwell, Maria | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 110 | Lautenberg, Frank R. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 110 | Pryor, Mark | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 110 | Carper, Thomas Richard | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Commerce, Science, and Transportation | Transferred to Finance |
| 110 | McCaskill, Claire | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 110 | Klobuchar, Amy | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 110 | Stevens, Ted | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:1st ranking minority member | 27 | Second period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Commerce, Science, and Transportation | Defeated for reelection |
| 110 | McCain, John | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 3rd Class | Commerce, Science, and Transportation | Transferred to Energy and Natural Resources; Homeland Security and Governmental Affairs; and Health, Education, Labor, and Pensions |
| 110 | Lott, Trent | Republican | 2007年1月12日 | 2007年12月18日 | Minority | 3 | Inapplicable | 19 | Only period of service | | Inapplicable | S. Res. 28 | Senate, 1st Class | Commerce, Science, and Transportation | Resigned from the Senate |
| 110 | Hutchison, Kay Bailey | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Ranking Minority Members:2nd ranking minority member | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Commerce, Science, and Transportation | Named ranking minority member 7/30/2008, SRES635 |
| 110 | Snowe, Olympia J. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 13 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 110 | Smith, Gordon H. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Commerce, Science, and Transportation | Defeated for reelection |
| 110 | Ensign, John Eric | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 110 | Sununu, John E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Commerce, Science, and Transportation | Defeated for reelection |
| 110 | DeMint, James W. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 110 | Vitter, David | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 10 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 110 | Thune, John | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 110 | Wicker, Roger F. | Republican | 2008年1月24日 | 2009年1月21日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES425 | Senate, 1st Class | Commerce, Science, and Transportation | Replaced Lott |
| 110 | Bingaman, Jeff | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 22 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 110 | Akaka, Daniel K. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Energy and Natural Resources | Left committee for no other |
| 110 | Dorgan, Byron | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 110 | Wyden, Ron | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 110 | Johnson, Tim | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 110 | Landrieu, Mary L. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 110 | Cantwell, Maria | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 110 | Salazar, Kenneth Lee | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 3rd Class | Energy and Natural Resources | Appointed U.S. Secretary of the Interior |
| 110 | Menendez, Robert | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 110 | Lincoln, Blanche Lambert | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 110 | Sanders, Bernard | Independent | 2007年1月12日 | 2009年1月21日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 110 | Tester, Jon | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 110 | Domenici, Pete V. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 30 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Energy and Natural Resources | Retired from the Senate at the end of the Congress |
| 110 | Craig, Larry E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Energy and Natural Resources | Retired from the Senate at the end of the Congress |
| 110 | Thomas, Craig | Republican | 2007年1月12日 | 2007年6月4日 | Minority | 3 | Inapplicable | 13 | Only period of service | | Inapplicable | S. Res. 28 | Senate, 1st Class | Energy and Natural Resources | Died |
| 110 | Murkowski, Lisa | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 110 | Burr, Richard | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 110 | DeMint, James W. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 266 | Senate, 3rd Class | Energy and Natural Resources | Replaced Thomas; transferred to Banking, Housing, and Urban Affairs |
| 110 | Smith, Gordon H. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Energy and Natural Resources | Defeated for reelection |
| 110 | Bunning, James Paul David | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 10 | Inapplicable | 5 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 110 | Martinez, Melquiades R. (Mel) | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 11 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 3rd Class | Energy and Natural Resources | Transferred to Commerce, Science, and Transportation |
| 110 | Corker, Bob | Republican | 2007年1月12日 | 2009年1月21日 | | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 266 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 110 | Sessions, Jeff | Republican | 2007年1月12日 | 2009年1月21日 | | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 266 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 110 | Barrasso, John A. | Republican | 2007年7月10日 | 2009年1月21日 | | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 266 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 110 | Boxer, Barbara | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Environment and Public Works | 无 |
| 110 | Baucus, Max | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Environment and Public Works | 无 |
| 110 | Lieberman, Joseph I. | Independent | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 19 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Environment and Public Works | Lieberman caucused with the Democrats, so is classified with the majority party members.; left committee for no other |
| 110 | Carper, Thomas Richard | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Environment and Public Works | 无 |
| 110 | Clinton, Hillary Rodham | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Environment and Public Works | Appointed U.S. Secretary of State |
| 110 | Lautenberg, Frank R. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 3 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Environment and Public Works | 无 |
| 110 | Cardin, Benjamin L. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Environment and Public Works | 无 |
| 110 | Sanders, Bernard | Independent | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Environment and Public Works | 无 |
| 110 | Klobuchar, Amy | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Environment and Public Works | 无 |
| 110 | Whitehouse, Sheldon | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Environment and Public Works | 无 |
| 110 | Inhofe, James M. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Environment and Public Works | 无 |
| 110 | Warner, John W. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Environment and Public Works | Retired from the Senate at the end of the Congress |
| 110 | Voinovich, George Victor | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Environment and Public Works | 无 |
| 110 | Isakson, Johnny | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 3rd Class | Environment and Public Works | Transferred to Commerce, Science, and Transportation |
| 110 | Vitter, David | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Environment and Public Works | 无 |
| 110 | Craig, Larry E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Environment and Public Works | Retired from the Senate at the end of the Congress |
| 110 | Alexander, Lamar | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Environment and Public Works | 无 |
| 110 | Thomas, Craig | Republican | 2007年1月12日 | 2007年6月4日 | Minority | 8 | Inapplicable | 1 | Third period of service | | Inapplicable | S. Res. 28 | Senate, 1st Class | Environment and Public Works | Died |
| 110 | Bond, Christopher S. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Environment and Public Works | 无 |
| 110 | Barrasso, John A. | Republican | 2007年7月10日 | 2009年1月21日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 266 | Senate, 1st Class | Environment and Public Works | Replaced Thomas |
| 110 | Baucus, Max | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Finance | 无 |
| 110 | Rockefeller, John D., IV | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Finance | 无 |
| 110 | Conrad, Kent | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Finance | 无 |
| 110 | Bingaman, Jeff | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Finance | 无 |
| 110 | Kerry, John F. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 6 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Finance | 无 |
| 110 | Lincoln, Blanche Lambert | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Finance | 无 |
| 110 | Wyden, Ron | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Finance | 无 |
| 110 | Schumer, Charles Ellis (Chuck) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Finance | 无 |
| 110 | Stabenow, Deborah Ann | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Finance | 无 |
| 110 | Cantwell, Maria | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Finance | 无 |
| 110 | Salazar, Kenneth Lee | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Finance | 无 |
| 110 | Grassley, Charles E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 17 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Finance | 无 |
| 110 | Hatch, Orrin G. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Finance | 无 |
| 110 | Lott, Trent | Republican | 2007年1月12日 | 2007年12月18日 | Minority | 3 | Inapplicable | 11 | Only period of service | | Inapplicable | S. Res. 28 | Senate, 1st Class | Finance | Resigned from the Senate |
| 110 | Snowe, Olympia J. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Finance | 无 |
| 110 | Kyl, Jon | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Finance | 无 |
| 110 | Thomas, Craig | Republican | 2007年1月12日 | 2007年6月4日 | Minority | 6 | Inapplicable | 7 | Only period of service | | Inapplicable | S. Res. 28 | Senate, 1st Class | Finance | Died |
| 110 | Smith, Gordon H. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Finance | Defeated for reelection |
| 110 | Bunning, James Paul David | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Finance | 无 |
| 110 | Crapo, Michael Dean | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Finance | 无 |
| 110 | Roberts, Pat | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Finance | 无 |
| 110 | Ensign, John Eric | Republican | 2007年7月10日 | 2009年1月21日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 266 | Senate, 1st Class | Finance | Replaced Thomas |
| 110 | Sununu, John E. | Republican | 2008年1月24日 | 2009年1月21日 | | 2 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES425 | Senate, 2nd Class | Finance | Replaced Lott |
| 110 | Biden, Joseph R., Jr. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 33 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 27 | Senate, 2nd Class | Foreign Relations | Elected vice president of the U.S. |
| 110 | Dodd, Christopher, J | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 27 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Foreign Relations | 无 |
| 110 | Kerry, John F. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 22 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Foreign Relations | 无 |
| 110 | Feingold, Russel D. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Foreign Relations | 无 |
| 110 | Boxer, Barbara | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Foreign Relations | 无 |
| 110 | Nelson, Clarence William (Bill) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Foreign Relations | Transferred to Finance |
| 110 | Obama, Barack | Democrat | 2007年1月12日 | 2008年11月16日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 27 | Senate, 3rd Class | Foreign Relations | Elected president of the U.S. |
| 110 | Menendez, Robert | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Foreign Relations | 无 |
| 110 | Cardin, Benjamin L. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Foreign Relations | 无 |
| 110 | Casey, Robert P., Jr. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Foreign Relations | 无 |
| 110 | Webb, Jim | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Foreign Relations | 无 |
| 110 | Lugar, Richard G. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Foreign Relations | 无 |
| 110 | Hagel, Chuck | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Foreign Relations | Retired from the Senate at the end of the Congress |
| 110 | Coleman, Norm | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Foreign Relations | Defeated for reelection |
| 110 | Corker, Bob | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Foreign Relations | 无 |
| 110 | Sununu, John E. | Republican | 2007年1月12日 | 2008年1月12日 | Minority | 5 | Inapplicable | 5 | Only period of service | Transferred to another committee | Inapplicable | S. Res. 28 | Senate, 2nd Class | Foreign Relations | Transferred to Finance |
| 110 | Voinovich, George Victor | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Foreign Relations | Transferred to Appropriations |
| 110 | Murkowski, Lisa | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 3rd Class | Foreign Relations | Transferred to Appropriations |
| 110 | DeMint, James W. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Foreign Relations | 无 |
| 110 | Isakson, Johnny | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Foreign Relations | 无 |
| 110 | Vitter, David | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 3rd Class | Foreign Relations | Transferred to Armed Services and To Banking, Housing, and Urban Affairs |
| 110 | Barrasso, John A. | Republican | 2008年1月12日 | 2009年1月21日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES448 | Senate, 1st Class | Foreign Relations | Replaced Sununu |
| 110 | Lieberman, Joseph I. | Independent | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Homeland Security and Governmental Affairs | Lieberman caucused with the Democrats, so is classified with the majority party members. |
| 110 | Levin, Carl | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 110 | Akaka, Daniel K. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 110 | Carper, Thomas Richard | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 110 | Pryor, Mark | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 110 | Landrieu, Mary L. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 110 | Obama, Barack | Democrat | 2007年1月12日 | 2008年11月16日 | Majority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 27 | Senate, 3rd Class | Homeland Security and Governmental Affairs | Elected president of the U.S. |
| 110 | McCaskill, Claire | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 110 | Tester, Jon | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 110 | Collins, Susan | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 110 | Stevens, Ted | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 8 | Second period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Homeland Security and Governmental Affairs | Defeated for reelection |
| 110 | Voinovich, George Victor | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Homeland Security and Governmental Affairs | 无 |
| 110 | Coleman, Norm | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Homeland Security and Governmental Affairs | Defeated for reelection |
| 110 | Coburn, Thomas Allen | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Homeland Security and Governmental Affairs | 无 |
| 110 | Domenici, Pete V. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Homeland Security and Governmental Affairs | Retired from the Senate at the end of the Congress |
| 110 | Warner, John W. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Homeland Security and Governmental Affairs | Retired from the Senate at the end of the Congress |
| 110 | Sununu, John E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Homeland Security and Governmental Affairs | Defeated for reelection |
| 110 | Leahy, Patrick J. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Judiciary | 无 |
| 110 | Kennedy, Edward M. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 44 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Judiciary | Left committee for no other |
| 110 | Biden, Joseph R., Jr. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 30 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 27 | Senate, 2nd Class | Judiciary | Elected vice president of the U.S. |
| 110 | Kohl, Herbert H. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Judiciary | 无 |
| 110 | Feinstein, Dianne | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Judiciary | 无 |
| 110 | Feingold, Russel D. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Judiciary | 无 |
| 110 | Schumer, Charles Ellis (Chuck) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Judiciary | 无 |
| 110 | Durbin, Richard J. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 7 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Judiciary | 无 |
| 110 | Cardin, Benjamin L. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Judiciary | 无 |
| 110 | Whitehouse, Sheldon | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Judiciary | 无 |
| 110 | Specter, Arlen | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 27 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Judiciary | 无 |
| 110 | Hatch, Orrin G. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 31 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Judiciary | 无 |
| 110 | Grassley, Charles E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 27 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Judiciary | 无 |
| 110 | Kyl, Jon | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Judiciary | 无 |
| 110 | Sessions, Jeff | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Judiciary | 无 |
| 110 | Graham, Lindsey O. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Judiciary | 无 |
| 110 | Cornyn, John | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Judiciary | 无 |
| 110 | Brownback, Samuel Dale | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 3 | Second period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 3rd Class | Judiciary | Transferred to Commerce, Science, and Transportation; Energy and Natural Resources; and Aging |
| 110 | Coburn, Thomas Allen | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Judiciary | 无 |
| 110 | Kennedy, Edward M. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 44 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Dodd, Christopher, J | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Harkin, Tom | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Mikulski, Barbara A. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Bingaman, Jeff | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 11 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Murray, Patty | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Reed, Jack | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Clinton, Hillary Rodham | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Health, Education, Labor, and Pensions | Appointed U.S. Secretary of State |
| 110 | Obama, Barack | Democrat | 2007年1月12日 | 2008年11月16日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 27 | Senate, 3rd Class | Health, Education, Labor, and Pensions | Elected president of the U.S. |
| 110 | Sanders, Bernard | Independent | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Brown, Sherrod | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Enzi, Michael B. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Gregg, Judd | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Alexander, Lamar | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Burr, Richard | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Isakson, Johnny | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Murkowski, Lisa | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Hatch, Orrin G. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 3 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Roberts, Pat | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Allard, Wayne | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Health, Education, Labor, and Pensions | Retired from the Senate at the end of the Congress |
| 110 | Coburn, Thomas Allen | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 110 | Dodd, Christopher, J | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Rules and Administration | 无 |
| 110 | Byrd, Robert C. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 45 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Rules and Administration | 无 |
| 110 | Inouye, Daniel K. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 25 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Rules and Administration | 无 |
| 110 | Feinstein, Dianne | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Rules and Administration | 无 |
| 110 | Schumer, Charles Ellis (Chuck) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Rules and Administration | 无 |
| 110 | Durbin, Richard J. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Rules and Administration | 无 |
| 110 | Nelson, Earl Benjamin (Ben) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Rules and Administration | 无 |
| 110 | Reid, Harry | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 3rd Class | Rules and Administration | Majority leader; left committee for no other |
| 110 | Murray, Patty | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Rules and Administration | 无 |
| 110 | Pryor, Mark | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Rules and Administration | 无 |
| 110 | Bennett, Robert F. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Rules and Administration | 无 |
| 110 | Stevens, Ted | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 23 | Second period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Rules and Administration | Defeated for reelection |
| 110 | McConnell, Mitch | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Rules and Administration | 无 |
| 110 | Cochran, Thad | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Rules and Administration | 无 |
| 110 | Lott, Trent | Republican | 2007年1月12日 | 2007年12月18日 | Minority | 5 | Inapplicable | 11 | Only period of service | | Inapplicable | S. Res. 28 | Senate, 1st Class | Rules and Administration | Resigned from the Senate |
| 110 | Chambliss, Saxby | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Rules and Administration | 无 |
| 110 | Hutchison, Kay Bailey | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Rules and Administration | 无 |
| 110 | Hagel, Chuck | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Rules and Administration | Retired from the Senate at the end of the Congress |
| 110 | Alexander, Lamar | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Rules and Administration | 无 |
| 110 | Ensign, John Eric | Republican | 2008年1月24日 | 2009年1月21日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES425 | Senate, 1st Class | Rules and Administration | Replaced Lott |
| 110 | Kerry, John F. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 22 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 110 | Levin, Carl | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 110 | Harkin, Tom | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 22 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 110 | Lieberman, Joseph I. | Independent | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Small Business and Entrepreneurship | Lieberman caucused with the Democrats, so is classified with the majority party members. |
| 110 | Landrieu, Mary L. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 110 | Cantwell, Maria | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Small Business and Entrepreneurship | 无 |
| 110 | Bayh, Evan | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Small Business and Entrepreneurship | 无 |
| 110 | Pryor, Mark | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 110 | Cardin, Benjamin L. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Small Business and Entrepreneurship | 无 |
| 110 | Tester, Jon | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Small Business and Entrepreneurship | Transferred to Appropriations and to Indian Affairs |
| 110 | Snowe, Olympia J. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Small Business and Entrepreneurship | 无 |
| 110 | Bond, Christopher S. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Small Business and Entrepreneurship | 无 |
| 110 | Coleman, Norm | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Small Business and Entrepreneurship | Defeated for reelection |
| 110 | Vitter, David | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Small Business and Entrepreneurship | 无 |
| 110 | Dole, Elizabeth Hanford | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Small Business and Entrepreneurship | Defeated for reelection |
| 110 | Thune, John | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Small Business and Entrepreneurship | 无 |
| 110 | Corker, Bob | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 1st Class | Small Business and Entrepreneurship | Left committee for no other |
| 110 | Enzi, Michael B. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 110 | Isakson, Johnny | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Small Business and Entrepreneurship | 无 |
| 110 | Akaka, Daniel K. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Veterans' Affairs | 无 |
| 110 | Rockefeller, John D., IV | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Veterans' Affairs | 无 |
| 110 | Murray, Patty | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Veterans' Affairs | 无 |
| 110 | Obama, Barack | Democrat | 2007年1月12日 | 2008年11月16日 | Majority | 4 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 27 | Senate, 3rd Class | Veterans' Affairs | Elected president of the U.S. |
| 110 | Sanders, Bernard | Independent | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Veterans' Affairs | 无 |
| 110 | Brown, Sherrod | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Veterans' Affairs | 无 |
| 110 | Webb, Jim | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Veterans' Affairs | 无 |
| 110 | Tester, Jon | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Veterans' Affairs | 无 |
| 110 | Craig, Larry E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:1st ranking minority member | 13 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Veterans' Affairs | Retired from the Senate at the end of the Congress |
| 110 | Specter, Arlen | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 27 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Veterans' Affairs | 无 |
| 110 | Burr, Richard | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Ranking Minority Members:2nd ranking minority member | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Veterans' Affairs | Appointed ranking minority member 9/11/2007 |
| 110 | Isakson, Johnny | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Veterans' Affairs | 无 |
| 110 | Graham, Lindsey O. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Veterans' Affairs | 无 |
| 110 | Hutchison, Kay Bailey | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Veterans' Affairs | Transferred to Banking, Housing, and Urban Affairs |
| 110 | Ensign, John Eric | Republican | 2007年1月12日 | 2008年1月24日 | Minority | 7 | Inapplicable | 5 | Only period of service | | Continues in congress, but not committee | S. Res. 28 | Senate, 1st Class | Veterans' Affairs | 无 |
| 110 | Wicker, Roger F. | Republican | 2008年1月24日 | 2009年1月21日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES425 | Senate, 1st Class | Veterans' Affairs | Replaced Ensign |
| 110 | Kohl, Herbert H. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 110 | Wyden, Ron | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 12 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 110 | Lincoln, Blanche Lambert | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 110 | Bayh, Evan | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 110 | Carper, Thomas Richard | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Aging (Special Committee) | Transferred to Finance |
| 110 | Nelson, Clarence William (Bill) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 110 | Clinton, Hillary Rodham | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 1st Class | Aging (Special Committee) | Appointed U.S. Secretary of State |
| 110 | Salazar, Kenneth Lee | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 3rd Class | Aging (Special Committee) | Appointed U.S. Secretary of the Interior |
| 110 | Casey, Robert P., Jr. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 110 | McCaskill, Claire | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 110 | Whitehouse, Sheldon | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 110 | Smith, Gordon H. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 7 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Aging (Special Committee) | Defeated for reelection |
| 110 | Shelby, Richard C. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 110 | Collins, Susan | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Aging (Special Committee) | 无 |
| 110 | Martinez, Melquiades R. (Mel) | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 110 | Craig, Larry E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Aging (Special Committee) | Retired from the Senate at the end of the Congress |
| 110 | Dole, Elizabeth Hanford | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Aging (Special Committee) | Defeated for reelection |
| 110 | Coleman, Norm | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Aging (Special Committee) | Defeated for reelection |
| 110 | Vitter, David | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 3rd Class | Aging (Special Committee) | Transferred to Armed Services and To Banking, Housing, and Urban Affairs |
| 110 | Corker, Bob | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 110 | Specter, Arlen | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 10 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 110 | Rockefeller, John D., IV | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Intelligence (Select Committee) | 无 |
| 110 | Feinstein, Dianne | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 110 | Wyden, Ron | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 110 | Bayh, Evan | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 110 | Mikulski, Barbara A. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 110 | Feingold, Russel D. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 110 | Nelson, Clarence William (Bill) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 110 | Whitehouse, Sheldon | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 110 | Levin, Carl | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 9 | Inapplicable | 11 | Only period of service | Transferred to another committee | Continues in congress, but not committee | S. Res. 27 | Senate, 2nd Class | Intelligence (Select Committee) | Ex officio member; left committee for no other |
| 110 | Bond, Christopher S. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 110 | Warner, John W. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 5 | Third period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Intelligence (Select Committee) | Retired from the Senate at the end of the Congress |
| 110 | Hagel, Chuck | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Intelligence (Select Committee) | Retired from the Senate at the end of the Congress |
| 110 | Chambliss, Saxby | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Intelligence (Select Committee) | 无 |
| 110 | Hatch, Orrin G. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 110 | Snowe, Olympia J. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 110 | Burr, Richard | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 110 | Johnson, Tim | Democrat | 2007年1月12日 | 2008年3月31日 | Majority | 1 | Committee Chairmen:1st Chairman | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Ethics (Select Committee) | Senator Johnson is Chair of the Select Committee on Ethics during his absence for all purposes under Senate Rules Committee Rules relevant statutes Senator Boxer shall act as Chair of the Select Committee on Ethics except for purposes of the designation under 2 USC Sec 72a-1f; Johnson removed from committee by SRES492 |
| 110 | Boxer, Barbara | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Committee Chairmen:2nd Chairman | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Ethics (Select Committee) | Senator Johnson is Chair of the Select Committee on Ethics during his absence for all purposes under Senate Rules Committee Rules relevant statutes Senator Boxer shall act as Chair of the Select Committee on Ethics except for purposes of the designation under 2 USC Sec 72a-1f; Boxer made chair on 3/31/2008 by SRES492 |
| 110 | Pryor, Mark | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Ethics (Select Committee) | 无 |
| 110 | Salazar, Kenneth Lee | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 27 | Senate, 3rd Class | Ethics (Select Committee) | Appointed U.S. Secretary of the Interior |
| 110 | Cornyn, John | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 1st Class | Ethics (Select Committee) | Transferred to Finance |
| 110 | Roberts, Pat | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 2nd Class | Ethics (Select Committee) | 无 |
| 110 | Thomas, Craig | Republican | 2007年1月12日 | 2007年6月4日 | Minority | 3 | Inapplicable | 7 | Only period of service | | Inapplicable | S. Res. 28 | Senate, 1st Class | Ethics (Select Committee) | Died |
| 110 | Isakson, Johnny | Republican | 2007年7月13日 | 2009年1月21日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 233 | Senate, 3rd Class | Ethics (Select Committee) | Replaced Thomas |
| 110 | Dorgan, Byron | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 110 | Inouye, Daniel K. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 110 | Conrad, Kent | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 110 | Akaka, Daniel K. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 110 | Johnson, Tim | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 2nd Class | Indian Affairs (Select Committee) | 无 |
| 110 | Cantwell, Maria | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 110 | Thomas, Craig | Republican | 2007年1月12日 | 2007年6月4日 | Minority | 1 | Ranking Minority Members:1st ranking minority member | 13 | Only period of service | | Inapplicable | S. Res. 28 | Senate, 1st Class | Indian Affairs (Select Committee) | Died |
| 110 | McCain, John | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 110 | Murkowski, Lisa | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Ranking Minority Members:2nd ranking minority member | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Indian Affairs (Select Committee) | Appointed ranking minority member 7/10/2007 |
| 110 | Coburn, Thomas Allen | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 110 | Domenici, Pete V. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 5 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Indian Affairs (Select Committee) | Retired from the Senate at the end of the Congress |
| 110 | Smith, Gordon H. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Indian Affairs (Select Committee) | Defeated for reelection |
| 110 | Burr, Richard | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S. Res. 28 | Senate, 3rd Class | Indian Affairs (Select Committee) | Transferred to Armed Services |
| 110 | Barrasso, John A. | Republican | 2007年7月10日 | 2009年1月21日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 266 | Senate, 1st Class | Indian Affairs (Select Committee) | Replaced Thomas; to rank after Coburn |
| 110 | Feinstein, Dianne | Democrat | 2007年3月26日 | 2009年1月21日 | Majority | 1 | Inapplicable | 1 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 98 | Senate, 3rd Class | Library (Joint) | 无 |
| 110 | Dodd, Christopher, J | Democrat | 2007年3月26日 | 2009年1月21日 | Majority | 2 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 98 | Senate, 3rd Class | Library (Joint) | 无 |
| 110 | Schumer, Charles Ellis (Chuck) | Democrat | 2007年3月26日 | 2009年1月21日 | Majority | 3 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 98 | Senate, 3rd Class | Library (Joint) | 无 |
| 110 | Bennett, Robert F. | Republican | 2007年3月26日 | 2009年1月21日 | Minority | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 98 | Senate, 3rd Class | Library (Joint) | 无 |
| 110 | Stevens, Ted | Republican | 2007年3月26日 | 2009年1月21日 | Minority | 2 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 98 | Senate, 2nd Class | Library (Joint) | Defeated for reelection |
| 110 | Feinstein, Dianne | Democrat | 2007年3月26日 | 2009年1月21日 | Majority | 1 | Inapplicable | 1 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 98 | Senate, 1st Class | Printing (Joint) | 无 |
| 110 | Inouye, Daniel K. | Democrat | 2007年3月26日 | 2009年1月21日 | Majority | 2 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 98 | Senate, 3rd Class | Printing (Joint) | 无 |
| 110 | Murray, Patty | Democrat | 2007年3月26日 | 2009年1月21日 | Majority | 3 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 98 | Senate, 3rd Class | Printing (Joint) | 无 |
| 110 | Bennett, Robert F. | Republican | 2007年3月26日 | 2009年1月21日 | Minority | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 98 | Senate, 3rd Class | Printing (Joint) | 无 |
| 110 | Chambliss, Saxby | Republican | 2007年3月26日 | 2009年1月21日 | Minority | 2 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 98 | Senate, 2nd Class | Printing (Joint) | 无 |
| 110 | Schumer, Charles Ellis (Chuck) | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 1 | Committee Chairmen:Only Chairman | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 3rd Class | Economic (Joint Committee) | 无 |
| 110 | Kennedy, Edward M. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 2 | Inapplicable | 33 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 110 | Bingaman, Jeff | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 3 | Inapplicable | 21 | First period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 110 | Klobuchar, Amy | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 4 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 110 | Casey, Robert P., Jr. | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 5 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 110 | Webb, Jim | Democrat | 2007年1月12日 | 2009年1月21日 | Majority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 27 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 110 | Brownback, Samuel Dale | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Economic (Joint Committee) | 无 |
| 110 | Sununu, John E. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 2 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | S. Res. 28 | Senate, 2nd Class | Economic (Joint Committee) | Defeated for reelection |
| 110 | DeMint, James W. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 3 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Economic (Joint Committee) | 无 |
| 110 | Bennett, Robert F. | Republican | 2007年1月12日 | 2009年1月21日 | Minority | 4 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S. Res. 28 | Senate, 3rd Class | Economic (Joint Committee) | 无 |
| 110 | Durbin, Richard J. | Democrat | 2007年1月3日 | 2009年1月3日 | Majority | 1 | Majority Leadership:Only Majority Whip | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | NA | Senate, 2nd Class | Majority whip | 无 |
| 110 | Reid, Harry | Democrat | 2007年1月3日 | 2009年1月3日 | Majority | 1 | Majority Leadership:Only Majority Leader | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | NA | Senate, 3rd Class | Majority leader | 无 |
| 110 | Kyl, Jon | Republican | 2007年12月18日 | 2009年1月3日 | Minority | 1 | Minority Leadership:1st Minority Whip | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | NA | Senate, 1st Class | Minority whip | 无 |
| 110 | Lott, Trent | Republican | 2007年1月3日 | 2007年12月18日 | Minority | 1 | Minority Leadership:Only Minority Whip | 1 | Only period of service | | Inapplicable | NA | Senate, 1st Class | Minority whip | 无 |
| 110 | McConnell, Mitch | Republican | 2007年1月3日 | 2009年1月3日 | Minority | 1 | Minority Leadership:Only Minority Leader | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | NA | Senate, 2nd Class | Minority leader | 无 |
| 111 | Harkin, Tom | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:1st Chairman | 24 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | Appointed chair of Health, Education, Labor, and Pensions 9/9/2009 |
| 111 | Leahy, Patrick J. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 35 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Conrad, Kent | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Baucus, Max | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Lincoln, Blanche Lambert | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Committee Chairmen:2nd Chairman | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | Appointed chair 9/9/2009; Defeated for reelection |
| 111 | Stabenow, Deborah Ann | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Nelson, Earl Benjamin (Ben) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Brown, Sherrod | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Casey, Robert P., Jr. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Klobuchar, Amy | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Bennett, Michael | Democrat | 2009年1月27日 | 2010年12月22日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S878 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | Late appointment |
| 111 | Gillibrand, Kirsten E. | Democrat | 2009年1月27日 | 2010年12月22日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S878 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | Late appointment |
| 111 | Chambliss, Saxby | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Lugar, Richard G. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 33 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Cochran, Thad | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 31 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | McConnell, Mitch | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 24 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Roberts, Pat | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Johanns, Mike | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Grassley, Charles E. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 7 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Thune, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 111 | Cornyn, John | Republican | 2009年7月21日 | 2010年12月22日 | Minority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | Late appointment |
| 111 | Inouye, Daniel K. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 39 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Appropriations | 无 |
| 111 | Byrd, Robert C. | Democrat | 2009年1月21日 | 2010年6月29日 | Majority | 2 | Inapplicable | 51 | Only period of service | | Inapplicable | SRES18 | Senate, 1st Class | Appropriations | Died 6/29/10 |
| 111 | Leahy, Patrick J. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 32 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Appropriations | 无 |
| 111 | Harkin, Tom | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 24 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Appropriations | 无 |
| 111 | Mikulski, Barbara A. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Appropriations | 无 |
| 111 | Kohl, Herbert H. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Appropriations | 无 |
| 111 | Murray, Patty | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Appropriations | 无 |
| 111 | Dorgan, Byron | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Appropriations | Announced retirement at end of Congress |
| 111 | Feinstein, Dianne | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 11 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Appropriations | 无 |
| 111 | Durbin, Richard J. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Appropriations | 无 |
| 111 | Johnson, Tim | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 11 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Appropriations | 无 |
| 111 | Landrieu, Mary L. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 12 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Appropriations | 无 |
| 111 | Reed, Jack | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 13 | Inapplicable | 3 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Appropriations | 无 |
| 111 | Lautenberg, Frank R. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 14 | Inapplicable | 3 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Appropriations | 无 |
| 111 | Nelson, Earl Benjamin (Ben) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 15 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Appropriations | 无 |
| 111 | Pryor, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 16 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | APPROPRIATIONS | 无 |
| 111 | Tester, Jon | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 17 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | APPROPRIATIONS | 无 |
| 111 | Cochran, Thad | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Appropriations | 无 |
| 111 | Specter, Arlen | Republican | 2009年1月21日 | 2009年5月5日 | Minority | 2 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Appropriations | Changed to the Democratic party; defeated in primaries |
| 111 | Bond, Christopher S. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Appropriations | Announced retirement at end of Congress |
| 111 | McConnell, Mitch | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Appropriations | 无 |
| 111 | Shelby, Richard C. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Appropriations | 无 |
| 111 | Gregg, Judd | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Appropriations | Announced retirement at end of Congress |
| 111 | Bennett, Robert F. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Appropriations | Defeated in primaries |
| 111 | Hutchison, Kay Bailey | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Appropriations | 无 |
| 111 | Brownback, Samuel Dale | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 9 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Appropriations | Elected Governor of KS, 2/10/10 |
| 111 | Alexander, Lamar | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 10 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Appropriations | 无 |
| 111 | Collins, Susan | Republican | 2009年5月5日 | 2010年12月22日 | | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES131 | Senate, 2nd Class | Appropriations | 无 |
| 111 | Voinovich, George Victor | Republican | 2009年5月5日 | 2010年12月22日 | | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES131 | Senate, 3rd Class | Appropriations | Announced retirement at end of Congress |
| 111 | Murkowski, Lisa | Republican | 2009年5月5日 | 2010年12月22日 | | 13 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES131 | Senate, 3rd Class | Appropriations | 无 |
| 111 | Specter, Arlen | Democrat | 2009年5月5日 | 2010年12月22日 | | 18 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES130 | Senate, 3rd Class | Appropriations | Changed to the Democratic party; Defeated in primaries |
| 111 | Levin, Carl | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 31 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Armed Services | 无 |
| 111 | Kennedy, Edward M. | Democrat | 2009年1月21日 | 2009年8月25日 | Majority | 2 | Inapplicable | 27 | Only period of service | | Inapplicable | SRES18 | Senate, 1st Class | Armed Services | Died 8/25/2009 |
| 111 | Byrd, Robert C. | Democrat | 2009年1月21日 | 2010年6月29日 | Majority | 3 | Inapplicable | 21 | Only period of service | | Inapplicable | SRES18 | Senate, 1st Class | Armed Services | Died 6/29/10 |
| 111 | Lieberman, Joseph I. | Independent | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Armed Services | Lieberman caucused with the Democrats, so is classified with the majority party members. |
| 111 | Reed, Jack | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Armed Services | 无 |
| 111 | Akaka, Daniel K. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Armed Services | 无 |
| 111 | Nelson, Clarence William (Bill) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 1st Class | Armed Services | 无 |
| 111 | Nelson, Earl Benjamin (Ben) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Armed Services | 无 |
| 111 | Bayh, Evan | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Armed Services | Announced retirement at end of Congress |
| 111 | Webb, Jim | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Armed Services | 无 |
| 111 | McCaskill, Claire | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 11 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Armed Services | 无 |
| 111 | Udall, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Armed Services | 无 |
| 111 | Hagan, Kay | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 13 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Armed Services | 无 |
| 111 | Begich, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 14 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Armed Services | 无 |
| 111 | Burris, Roland | Democrat | 2009年1月21日 | 2010年11月29日 | Majority | 15 | Inapplicable | 1 | Only period of service | | Inapplicable | SRES18 | Senate, 3rd Class | Armed Services | Replaced Obama; resigned 11/29/10 |
| 111 | McCain, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Armed Services | 无 |
| 111 | Inhofe, James M. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Armed Services | 无 |
| 111 | Sessions, Jeff | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Armed Services | 无 |
| 111 | Chambliss, Saxby | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Armed Services | 无 |
| 111 | Graham, Lindsey O. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Armed Services | 无 |
| 111 | Thune, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 3rd Class | Armed Services | 无 |
| 111 | Martinez, Melquiades R. (Mel) | Republican | 2009年1月21日 | 2009年9月9日 | Minority | 7 | Inapplicable | 3 | Only period of service | | Inapplicable | SRES19 | Senate, 3rd Class | Armed Services | Resigned from the Senate |
| 111 | Wicker, Roger F. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 2 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Armed Services | 无 |
| 111 | Burr, Richard | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Armed Services | 无 |
| 111 | Vitter, David | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Armed Services | 无 |
| 111 | Collins, Susan | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 11 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Armed Services | 无 |
| 111 | Kirk, Paul | Democrat | 2009年9月29日 | 2010年2月4日 | | 1 | Inapplicable | 1 | Only period of service | | Inapplicable | SRES290 | Senate, 1st Class | Armed Services | Appointed to replace Ted Kennedy, left office on 2/4/10 after successor sworn in |
| 111 | LeMieux, George | Republican | 2009年9月22日 | 2010年12月22日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES279 | Senate, 3rd Class | Armed Services | Replaced Martinez; ranked after Wicker; Announced retirement at end of Congress |
| 111 | Dodd, Christopher, J | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 29 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | Announced retirement at end of Congress |
| 111 | Johnson, Tim | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Reed, Jack | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Schumer, Charles Ellis (Chuck) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Bayh, Evan | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | Announced retirement at end of Congress |
| 111 | Menendez, Robert | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Akaka, Daniel K. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 3 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Brown, Sherrod | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Tester, Jon | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Kohl, Herbert H. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Warner, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Merkley, Jeff | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Bennett, Michael | Democrat | 2009年1月27日 | 2010年12月22日 | Majority | 13 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S879 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | Late appointment |
| 111 | Shelby, Richard C. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Bennett, Robert F. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | Defeated in primaries |
| 111 | Bunning, James Paul David | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | Announced retirement at end of Congress |
| 111 | Crapo, Michael Dean | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Martinez, Melquiades R. (Mel) | Republican | 2009年1月21日 | 2009年9月9日 | Minority | 5 | Inapplicable | 5 | Only period of service | | Inapplicable | SRES19 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | Resigned from the Senate |
| 111 | Corker, Bob | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 2 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | DeMint, James W. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Vitter, David | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Johanns, Mike | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Hutchison, Kay Bailey | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 111 | Gregg, Judd | Republican | 2009年9月22日 | 2010年12月22日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES279 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | Replaced Martinez; Announced Retirement at end of Congress |
| 111 | Conrad, Kent | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Budget | 无 |
| 111 | Murray, Patty | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Budget | 无 |
| 111 | Wyden, Ron | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 14 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Budget | 无 |
| 111 | Feingold, Russel D. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Budget | Defeated for reelection |
| 111 | Byrd, Robert C. | Democrat | 2009年1月21日 | 2010年6月29日 | Majority | 5 | Inapplicable | 9 | Only period of service | | Inapplicable | SRES18 | Senate, 1st Class | Budget | Died 6/29/10 |
| 111 | Nelson, Clarence William (Bill) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Budget | 无 |
| 111 | Stabenow, Deborah Ann | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Budget | 无 |
| 111 | Menendez, Robert | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 1st Class | Budget | 无 |
| 111 | Cardin, Benjamin L. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Budget | 无 |
| 111 | Sanders, Bernard | Independent | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 1st Class | Budget | 无 |
| 111 | Whitehouse, Sheldon | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 11 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Budget | 无 |
| 111 | Warner, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Budget | 无 |
| 111 | Merkley, Jeff | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 13 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Budget | 无 |
| 111 | Gregg, Judd | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 17 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Budget | Announced retirement at end of Congress |
| 111 | Grassley, Charles E. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Budget | 无 |
| 111 | Enzi, Michael B. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Budget | 无 |
| 111 | Sessions, Jeff | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Budget | 无 |
| 111 | Bunning, James Paul David | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Budget | Announced retirement at end of Congress |
| 111 | Crapo, Michael Dean | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Budget | 无 |
| 111 | Ensign, John Eric | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Budget | 无 |
| 111 | Cornyn, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Budget | 无 |
| 111 | Graham, Lindsey O. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 9 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Budget | 无 |
| 111 | Alexander, Lamar | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 10 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 2nd Class | Budget | 无 |
| 111 | Rockefeller, John D., IV | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 24 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 111 | Inouye, Daniel K. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 41 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 111 | Kerry, John F. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 111 | Dorgan, Byron | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Commerce, Science, and Transportation | Announced retirement at end of Congress |
| 111 | Boxer, Barbara | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 111 | Nelson, Clarence William (Bill) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 111 | Cantwell, Maria | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 111 | Lautenberg, Frank R. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 111 | Pryor, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 111 | McCaskill, Claire | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 111 | Klobuchar, Amy | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 11 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 111 | Udall, Tom | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 111 | Warner, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 13 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 111 | Begich, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 14 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 111 | Hutchison, Kay Bailey | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Commerce, Science, and Transportation | Named ranking minority member 7/30/2008, SRES635 |
| 111 | Snowe, Olympia J. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 15 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 111 | Ensign, John Eric | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 111 | DeMint, James W. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 111 | Thune, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 111 | Wicker, Roger F. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 2 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 111 | Isakson, Johnny | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 111 | Vitter, David | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 111 | Brownback, Samuel Dale | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 9 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Commerce, Science, and Transportation | Elected Governor of KS, 2/10/10 |
| 111 | Martinez, Melquiades R. (Mel) | Republican | 2009年1月21日 | 2009年9月9日 | Minority | 10 | Inapplicable | 1 | Only period of service | | Inapplicable | SRES19 | Senate, 3rd Class | Commerce, Science, and Transportation | Resigned from the Senate |
| 111 | Johanns, Mike | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 111 | LeMieux, George | Republican | 2009年9月22日 | 2010年12月22日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES279 | Senate, 3rd Class | Commerce, Science, and Transportation | Ranked after Wicker; Announced retirement at end of Congress |
| 111 | Bingaman, Jeff | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 24 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 111 | Dorgan, Byron | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Energy and Natural Resources | Announced retirement at end of Congress |
| 111 | Wyden, Ron | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 111 | Johnson, Tim | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 111 | Landrieu, Mary L. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 111 | Cantwell, Maria | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 111 | Menendez, Robert | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 111 | Lincoln, Blanche Lambert | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Third period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Energy and Natural Resources | Defeated for reelection |
| 111 | Sanders, Bernard | Independent | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 111 | Tester, Jon | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 111 | Bayh, Evan | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 11 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Energy and Natural Resources | Announced retirement at end of Congress |
| 111 | Stabenow, Deborah Ann | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 111 | Udall, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 13 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 111 | Shaheen, Jeanne | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 14 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 111 | Murkowski, Lisa | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 111 | Burr, Richard | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 111 | Barrasso, John A. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 111 | Brownback, Samuel Dale | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Energy and Natural Resources | Elected Governor of KS, 2/10/10 |
| 111 | Risch, James | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 111 | McCain, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 111 | Bennett, Robert F. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Energy and Natural Resources | Defeated in primaries |
| 111 | Bunning, James Paul David | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 7 | Second period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Energy and Natural Resources | Announced retirement at end of Congress |
| 111 | Sessions, Jeff | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 111 | Corker, Bob | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 10 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 111 | Boxer, Barbara | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Environment and Public Works | 无 |
| 111 | Baucus, Max | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 31 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Environment and Public Works | 无 |
| 111 | Carper, Thomas Richard | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Environment and Public Works | 无 |
| 111 | Lautenberg, Frank R. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 5 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Environment and Public Works | 无 |
| 111 | Cardin, Benjamin L. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Environment and Public Works | 无 |
| 111 | Sanders, Bernard | Independent | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Environment and Public Works | 无 |
| 111 | Klobuchar, Amy | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 1st Class | Environment and Public Works | 无 |
| 111 | Whitehouse, Sheldon | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Environment and Public Works | 无 |
| 111 | Udall, Tom | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | ENVIRONMENT AND PUBLIC WORKS | 无 |
| 111 | Merkley, Jeff | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | ENVIRONMENT AND PUBLIC WORKS | 无 |
| 111 | Gillibrand, Kirsten E. | Democrat | 2009年1月27日 | 2010年12月22日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S880 | Senate, 1st Class | ENVIRONMENT AND PUBLIC WORKS | Late appointment |
| 111 | Inhofe, James M. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Environment and Public Works | 无 |
| 111 | Voinovich, George Victor | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Environment and Public Works | Announced retirement at end of Congress |
| 111 | Vitter, David | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Environment and Public Works | 无 |
| 111 | Barrasso, John A. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Environment and Public Works | 无 |
| 111 | Specter, Arlen | Republican | 2009年1月21日 | 2009年5月5日 | Minority | 5 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Environment and Public Works | Changed to Democratic party; defeated in primaries |
| 111 | Crapo, Michael Dean | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Environment and Public Works | 无 |
| 111 | Bond, Christopher S. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Environment and Public Works | Announced retirement at end of Congress |
| 111 | Alexander, Lamar | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Environment and Public Works | 无 |
| 111 | Specter, Arlen | Democrat | 2009年5月5日 | 2010年12月22日 | | 12 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Inapplicable | SRES130 | Senate, 3rd Class | ENVIRONMENT AND PUBLIC WORKS | Changed to Democratic party; Defeated in primaries |
| 111 | Baucus, Max | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 31 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Finance | 无 |
| 111 | Rockefeller, John D., IV | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Finance | 无 |
| 111 | Bingaman, Jeff | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Finance | 无 |
| 111 | Conrad, Kent | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Finance | 无 |
| 111 | Kerry, John F. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 8 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Finance | 无 |
| 111 | Lincoln, Blanche Lambert | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Finance | Defeated for reelection |
| 111 | Wyden, Ron | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Finance | 无 |
| 111 | Schumer, Charles Ellis (Chuck) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Finance | 无 |
| 111 | Stabenow, Deborah Ann | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Finance | 无 |
| 111 | Cantwell, Maria | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Finance | 无 |
| 111 | Salazar, Kenneth Lee | Democrat | 2009年1月21日 | 2009年1月20日 | Majority | 10 | Inapplicable | 3 | Only period of service | | Inapplicable | SRES18 | Senate, 3rd Class | Finance | Resigned 1/20/2009, Appointed U.S. Secretary of the Interior |
| 111 | Nelson, Clarence William (Bill) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Finance | 无 |
| 111 | Menendez, Robert | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 1st Class | Finance | 无 |
| 111 | Carper, Thomas Richard | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 13 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Finance | 无 |
| 111 | Grassley, Charles E. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 19 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Finance | 无 |
| 111 | Hatch, Orrin G. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Finance | 无 |
| 111 | Snowe, Olympia J. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Finance | 无 |
| 111 | Kyl, Jon | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Finance | 无 |
| 111 | Bunning, James Paul David | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Finance | Announced retirement at end of Congress |
| 111 | Crapo, Michael Dean | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Finance | 无 |
| 111 | Roberts, Pat | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Finance | 无 |
| 111 | Ensign, John Eric | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Finance | 无 |
| 111 | Enzi, Michael B. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 2nd Class | Finance | 无 |
| 111 | Cornyn, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Finance | 无 |
| 111 | Kerry, John F. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 24 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Foreign Relations | 无 |
| 111 | Dodd, Christopher, J | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Foreign Relations | Announced retirement at end of Congress |
| 111 | Feingold, Russel D. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Foreign Relations | Defeated for reelection |
| 111 | Boxer, Barbara | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Foreign Relations | 无 |
| 111 | Menendez, Robert | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Foreign Relations | 无 |
| 111 | Cardin, Benjamin L. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Foreign Relations | 无 |
| 111 | Casey, Robert P., Jr. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Foreign Relations | 无 |
| 111 | Webb, Jim | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Foreign Relations | 无 |
| 111 | Shaheen, Jeanne | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Foreign Relations | 无 |
| 111 | Kaufman, Ted | Democrat | 2009年1月21日 | 2009年11月15日 | Majority | 10 | Inapplicable | 1 | Only period of service | | Inapplicable | SRES18 | Senate, 2nd Class | Foreign Relations | Appointed to replace Biden, left office on 11/15/09 after successor sworn in |
| 111 | Gillibrand, Kirsten E. | Democrat | 2009年1月27日 | 2010年12月22日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S880 | Senate, 1st Class | Foreign Relations | Late appointment |
| 111 | Lugar, Richard G. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 31 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Foreign Relations | Ranking reflects SRES218 |
| 111 | Corker, Bob | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Foreign Relations | Ranking reflects SRES218 |
| 111 | Isakson, Johnny | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Foreign Relations | Ranking reflects SRES218 |
| 111 | Risch, James | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Foreign Relations | Ranking reflects SRES218 |
| 111 | DeMint, James W. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Foreign Relations | Ranking reflects SRES218 |
| 111 | Barrasso, John A. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 2 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Foreign Relations | Ranking reflects SRES218 |
| 111 | Wicker, Roger F. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 1st Class | Foreign Relations | Ranking reflects SRES218 |
| 111 | Inhofe, James M. | Republican | 2009年7月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES218 | Senate, 2nd Class | Foreign Relations | Late appointment; ranking reflects SRES218 |
| 111 | Lieberman, Joseph I. | Independent | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Homeland Security and Governmental Affairs | Lieberman caucused with the Democrats, so is classified with the majority party members. |
| 111 | Levin, Carl | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 31 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 111 | Akaka, Daniel K. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 111 | Carper, Thomas Richard | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 111 | Pryor, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 111 | Landrieu, Mary L. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 111 | McCaskill, Claire | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 111 | Tester, Jon | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 111 | Burris, Roland | Democrat | 2009年1月21日 | 2010年11月29日 | Majority | 9 | Inapplicable | 1 | Only period of service | | Inapplicable | SRES18 | Senate, 3rd Class | Homeland Security and Governmental Affairs | Replaced Obama; resigned 11/29/10 |
| 111 | Bennett, Michael | Democrat | 2009年1月27日 | 2010年12月22日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | S880 | Senate, 3rd Class | Homeland Security and Governmental Affairs | Late appointment |
| 111 | Collins, Susan | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Homeland Security and Governmental Affairs | Ranking reflects SRES218 |
| 111 | Coburn, Thomas Allen | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Homeland Security and Governmental Affairs | Ranking reflects SRES218 |
| 111 | McCain, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Homeland Security and Governmental Affairs | Ranking reflects SRES218 |
| 111 | Voinovich, George Victor | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Homeland Security and Governmental Affairs | Ranking reflects SRES218; Announced retirement at end of Congress |
| 111 | Ensign, John Eric | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Homeland Security and Governmental Affairs | Ranking reflects SRES218 |
| 111 | Graham, Lindsey O. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 2nd Class | Homeland Security and Governmental Affairs | Ranking reflects SRES218 |
| 111 | Bennett, Robert F. | Republican | 2009年7月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 1 | | Remained until adjournment/assignments | Inapplicable | SRES218 | Senate, 3rd Class | Homeland Security and Governmental Affairs | Late appointment; defeated in primaries |
| 111 | Kirk, Paul | Democrat | 2009年9月29日 | 2010年2月4日 | | 1 | Inapplicable | 1 | Only period of service | | Inapplicable | SRES290 | Senate, 1st Class | Homeland Security and Governmental Affairs | Appointed to replace Ted Kennedy, left office on 2/4/10 after successor sworn in |
| 111 | Leahy, Patrick J. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 31 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Judiciary | 无 |
| 111 | Kohl, Herbert H. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Judiciary | 无 |
| 111 | Feinstein, Dianne | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Judiciary | 无 |
| 111 | Feingold, Russel D. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Judiciary | Defeated for reelection |
| 111 | Schumer, Charles Ellis (Chuck) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Judiciary | 无 |
| 111 | Durbin, Richard J. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 9 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Judiciary | 无 |
| 111 | Cardin, Benjamin L. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 1st Class | Judiciary | 无 |
| 111 | Whitehouse, Sheldon | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Judiciary | 无 |
| 111 | Wyden, Ron | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 3rd Class | JUDICIARY | SRES208 ranks Klobuchar, Kaufman, Wyden |
| 111 | Klobuchar, Amy | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | JUDICIARY | SRES208 ranks Klobuchar, Kaufman, Wyden |
| 111 | Kaufman, Ted | Democrat | 2009年1月21日 | 2009年11月15日 | Majority | 11 | Inapplicable | 1 | Only period of service | | Inapplicable | SRES18 | Senate, 2nd Class | JUDICIARY | SRES208 ranks Klobuchar, Kaufman, Wyden; Appointed to replace Biden, left office on 11/15/09 after successor sworn in |
| 111 | Specter, Arlen | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:1st ranking minority member | 29 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Judiciary | Changed to Democratic party; Defeated in primaries |
| 111 | Hatch, Orrin G. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 33 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Judiciary | 无 |
| 111 | Grassley, Charles E. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Judiciary | 无 |
| 111 | Kyl, Jon | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Judiciary | 无 |
| 111 | Sessions, Jeff | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Ranking Minority Members:2nd ranking minority member | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Judiciary | Became ranking member 5/5/2009 |
| 111 | Graham, Lindsey O. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Judiciary | 无 |
| 111 | Cornyn, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Judiciary | 无 |
| 111 | Coburn, Thomas Allen | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Judiciary | 无 |
| 111 | Specter, Arlen | Democrat | 2009年5月5日 | 2010年12月22日 | | 12 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES130 | Senate, 3rd Class | Judiciary | Changed to Democratic party; Defeated in primaries |
| 111 | Franken, Al | Democrat | 2009年7月7日 | 2010年12月22日 | | 13 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES208 | Senate, 2nd Class | Judiciary | 无 |
| 111 | Kennedy, Edward M. | Democrat | 2009年1月21日 | 2009年8月25日 | Majority | 1 | Committee Chairmen:1st Chairman | 46 | Only period of service | | Inapplicable | SRES18 | Senate, 1st Class | Health, Education, Labor, and Pensions | Died 8/25/2009 |
| 111 | Dodd, Christopher, J | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 25 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Health, Education, Labor, and Pensions | Announced retirement at end of Congress |
| 111 | Harkin, Tom | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Committee Chairmen:2nd Chairman | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Health, Education, Labor, and Pensions | Appointed chair 9/9/2009 |
| 111 | Mikulski, Barbara A. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Bingaman, Jeff | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 13 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Murray, Patty | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Reed, Jack | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Sanders, Bernard | Independent | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Brown, Sherrod | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Casey, Robert P., Jr. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Hagan, Kay | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Merkley, Jeff | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 12 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Franken, Al | Democrat | 2009年9月9日 | 2010年12月22日 | Majority | 13 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES257 | Senate, 2nd Class | Health, Education, Labor, and Pensions | Late appointment |
| 111 | Enzi, Michael B. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Gregg, Judd | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Health, Education, Labor, and Pensions | Announced retirement at end of Congress |
| 111 | Alexander, Lamar | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Burr, Richard | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Isakson, Johnny | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | McCain, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Hatch, Orrin G. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 5 | Second period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Murkowski, Lisa | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Coburn, Thomas Allen | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Roberts, Pat | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 10 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 111 | Bennett, Michael | Democrat | 2009年9月29日 | 2010年12月22日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES290 | Senate, 3rd Class | Health, Education, Labor, and Pensions | Replaced Kennedy |
| 111 | Schumer, Charles Ellis (Chuck) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 11 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Rules and Administration | Rank given in SRES343: Schumer, Byrd, Inouye, Dodd, Feinstein, Durbin, Nelson (Nebraska), Murray, Pryor, Udall (NM), Warner |
| 111 | Feinstein, Dianne | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Rules and Administration | Rank given in SRES343: Schumer, Byrd, Inouye, Dodd, Feinstein, Durbin, Nelson (Nebraska), Murray, Pryor, Udall (NM), Warner |
| 111 | Dodd, Christopher, J | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 23 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Rules and Administration | Rank given in SRES343: Schumer, Byrd, Inouye, Dodd, Feinstein, Durbin, Nelson (Nebraska), Murray, Pryor, Udall (NM), Warner; Announced retirement at end of Congress |
| 111 | Byrd, Robert C. | Democrat | 2009年1月21日 | 2010年6月29日 | Majority | 4 | Inapplicable | 47 | Only period of service | | Inapplicable | SRES18 | Senate, 1st Class | Rules and Administration | Rank given in SRES343: Schumer, Byrd, Inouye, Dodd, Feinstein, Durbin, Nelson (Nebraska), Murray, Pryor, Udall (NM), Warner; Died 6/29/10 |
| 111 | Inouye, Daniel K. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 27 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Rules and Administration | Rank given in SRES343: Schumer, Byrd, Inouye, Dodd, Feinstein, Durbin, Nelson (Nebraska), Murray, Pryor, Udall (NM), Warner |
| 111 | Durbin, Richard J. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Rules and Administration | Rank given in SRES343: Schumer, Byrd, Inouye, Dodd, Feinstein, Durbin, Nelson (Nebraska), Murray, Pryor, Udall (NM), Warner |
| 111 | Nelson, Earl Benjamin (Ben) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Rules and Administration | Rank given in SRES343: Schumer, Byrd, Inouye, Dodd, Feinstein, Durbin, Nelson (Nebraska), Murray, Pryor, Udall (NM), Warner |
| 111 | Murray, Patty | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Rules and Administration | Rank given in SRES343: Schumer, Byrd, Inouye, Dodd, Feinstein, Durbin, Nelson (Nebraska), Murray, Pryor, Udall (NM), Warner |
| 111 | Pryor, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Rules and Administration | Rank given in SRES343: Schumer, Byrd, Inouye, Dodd, Feinstein, Durbin, Nelson (Nebraska), Murray, Pryor, Udall (NM), Warner |
| 111 | Warner, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Rules and Administration | Rank given in SRES343: Schumer, Byrd, Inouye, Dodd, Feinstein, Durbin, Nelson (Nebraska), Murray, Pryor, Udall (NM), Warner |
| 111 | Udall, Tom | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Rules and Administration | Rank given in SRES343: Schumer, Byrd, Inouye, Dodd, Feinstein, Durbin, Nelson (Nebraska), Murray, Pryor, Udall (NM), Warner |
| 111 | Bennett, Robert F. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Rules and Administration | Defeated in primaries |
| 111 | McConnell, Mitch | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Rules and Administration | 无 |
| 111 | Cochran, Thad | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Rules and Administration | 无 |
| 111 | Chambliss, Saxby | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Rules and Administration | 无 |
| 111 | Hutchison, Kay Bailey | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Rules and Administration | 无 |
| 111 | Alexander, Lamar | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Rules and Administration | 无 |
| 111 | Roberts, Pat | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Rules and Administration | 无 |
| 111 | Ensign, John Eric | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 2 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 1st Class | Rules and Administration | 无 |
| 111 | Landrieu, Mary L. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 111 | Kerry, John F. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 24 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 111 | Levin, Carl | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 31 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 111 | Harkin, Tom | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 24 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 111 | Lieberman, Joseph I. | Independent | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Small Business and Entrepreneurship | Lieberman caucused with the Democrats, so is classified with the majority party members. |
| 111 | Cantwell, Maria | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Small Business and Entrepreneurship | 无 |
| 111 | Bayh, Evan | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Small Business and Entrepreneurship | Announced retirement at end of Congress |
| 111 | Pryor, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 111 | Cardin, Benjamin L. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Small Business and Entrepreneurship | 无 |
| 111 | Hagan, Kay | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 111 | Shaheen, Jeanne | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 111 | Snowe, Olympia J. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Small Business and Entrepreneurship | Ranking reflects SRES218 |
| 111 | Bond, Christopher S. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 23 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Small Business and Entrepreneurship | Ranking reflects SRES218; Announced retirement at end of Congress |
| 111 | Vitter, David | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Small Business and Entrepreneurship | Ranking reflects SRES218 |
| 111 | Thune, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 3rd Class | Small Business and Entrepreneurship | Ranking reflects SRES218 |
| 111 | Enzi, Michael B. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Small Business and Entrepreneurship | Ranking reflects SRES218 |
| 111 | Isakson, Johnny | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 3rd Class | Small Business and Entrepreneurship | Ranking reflects SRES218 |
| 111 | Wicker, Roger F. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 1st Class | Small Business and Entrepreneurship | Ranking reflects SRES218 |
| 111 | Risch, James | Republican | 2009年7月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES218 | Senate, 2nd Class | Small Business and Entrepreneurship | Late appointment |
| 111 | Akaka, Daniel K. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Veterans' Affairs | 无 |
| 111 | Rockefeller, John D., IV | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 25 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Veterans' Affairs | 无 |
| 111 | Murray, Patty | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Veterans' Affairs | 无 |
| 111 | Sanders, Bernard | Independent | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Veterans' Affairs | 无 |
| 111 | Brown, Sherrod | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Veterans' Affairs | 无 |
| 111 | Webb, Jim | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Veterans' Affairs | 无 |
| 111 | Tester, Jon | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Veterans' Affairs | 无 |
| 111 | Begich, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | VETERANS' AFFAIRS | 无 |
| 111 | Burris, Roland | Democrat | 2009年1月21日 | 2010年11月29日 | Majority | 9 | Inapplicable | 1 | Only period of service | | Inapplicable | SRES18 | Senate, 3rd Class | VETERANS' AFFAIRS | Replaced Obama; resigned 11/29/10 |
| 111 | Burr, Richard | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Veterans' Affairs | 无 |
| 111 | Specter, Arlen | Democrat | 2009年1月21日 | 2009年5月5日 | Minority | 2 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Veterans' Affairs | Changed to Democratic party; Defeated in primaries |
| 111 | Isakson, Johnny | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Veterans' Affairs | 无 |
| 111 | Wicker, Roger F. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 2 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Veterans' Affairs | 无 |
| 111 | Johanns, Mike | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Veterans' Affairs | 无 |
| 111 | Graham, Lindsey O. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 2nd Class | Veterans' Affairs | 无 |
| 111 | Specter, Arlen | Democrat | 2009年5月5日 | 2010年12月22日 | | 10 | Inapplicable | 29 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES130 | Senate, 3rd Class | Veterans' Affairs | Changed to Democratic party; Defeated in primaries |
| 111 | Kohl, Herbert H. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 21 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 111 | Wyden, Ron | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 14 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 111 | Lincoln, Blanche Lambert | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Aging (Special Committee) | Defeated for reelection |
| 111 | Bayh, Evan | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Aging (Special Committee) | Announced retirement at end of Congress |
| 111 | Nelson, Clarence William (Bill) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 111 | Casey, Robert P., Jr. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 111 | McCaskill, Claire | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 111 | Whitehouse, Sheldon | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 111 | Udall, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Aging (Special Committee) | Late appointee |
| 111 | Bennett, Michael | Democrat | 2009年1月27日 | 2010年12月22日 | Majority | 10 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S880 | Senate, 3rd Class | Aging (Special Committee) | Late appointee |
| 111 | Gillibrand, Kirsten E. | Democrat | 2009年1月27日 | 2010年12月22日 | Majority | 11 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | S880 | Senate, 1st Class | Aging (Special Committee) | Late appointee |
| 111 | Martinez, Melquiades R. (Mel) | Republican | 2009年1月21日 | 2009年9月9日 | Minority | 1 | Ranking Minority Members:1st ranking minority member | 5 | Only period of service | | Inapplicable | SRES19 | Senate, 3rd Class | Aging (Special Committee) | SRES218 has ranking: Martinez, Shelby, Collins, Corker, Hatch, Brownback, Graham, Chambliss; resigned from the Senate |
| 111 | Shelby, Richard C. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Aging (Special Committee) | SRES218 has ranking: Martinez, Shelby, Collins, Corker, Hatch, Brownback, Graham, Chambliss; SRES279 has ranking: Corker, Shelby, Collins, Hatch, LeMieux, Brownback, Graham, Chambliss |
| 111 | Collins, Susan | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Aging (Special Committee) | SRES218 has ranking: Martinez, Shelby, Collins, Corker, Hatch, Brownback, Graham, Chambliss; SRES279 has ranking: Corker, Shelby, Collins, Hatch, LeMieux, Brownback, Graham, Chambliss |
| 111 | Specter, Arlen | Republican | 2009年1月21日 | 2009年5月5日 | Minority | 4 | Inapplicable | 3 | Third period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Aging (Special Committee) | Changed to Democratic party; defeated in primaries |
| 111 | Chambliss, Saxby | Republican | 2009年7月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES218 | Senate, 2nd Class | Aging (Special Committee) | SRES218 has ranking: Martinez, Shelby, Collins, Corker, Hatch, Brownback, Graham, Chambliss; SRES279 has ranking: Corker, Shelby, Collins, Hatch, LeMieux, Brownback, Graham, Chambliss |
| 111 | Corker, Bob | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Ranking Minority Members:2nd ranking minority member | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Aging (Special Committee) | SRES218 has ranking: Martinez, Shelby, Collins, Corker, Hatch, Brownback, Graham, Chambliss; SRES279 has ranking: Corker, Shelby, Collins, Hatch, LeMieux, Brownback, Graham, Chambliss |
| 111 | Hatch, Orrin G. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Aging (Special Committee) | SRES218 has ranking: Martinez, Shelby, Collins, Corker, Hatch, Brownback, Graham, Chambliss; SRES279 has ranking: Corker, Shelby, Collins, Hatch, LeMieux, Brownback, Graham, Chambliss |
| 111 | Brownback, Samuel Dale | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Aging (Special Committee) | SRES218 has ranking: Martinez, Shelby, Collins, Corker, Hatch, Brownback, Graham, Chambliss; SRES279 has ranking: Corker, Shelby, Collins, Hatch, LeMieux, Brownback, Graham, Chambliss; Elected Governor of KS, 2/10/10 |
| 111 | Graham, Lindsey O. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 9 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Aging (Special Committee) | SRES218 has ranking: Martinez, Shelby, Collins, Corker, Hatch, Brownback, Graham, Chambliss; SRES279 has ranking: Corker, Shelby, Collins, Hatch, LeMieux, Brownback, Graham, Chambliss |
| 111 | Specter, Arlen | Democrat | 2009年5月5日 | 2010年12月22日 | | 12 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Inapplicable | SRES130 | Senate, 3rd Class | Aging (Special Committee) | Late appointee; Defeated in primaries |
| 111 | LeMieux, George | Republican | 2009年9月22日 | 2010年12月22日 | | 1 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES279 | Senate, 3rd Class | Aging (Special Committee) | SRES279 has ranking: Corker, Shelby, Collins, Hatch, LeMieux, Brownback, Graham, Chambliss; Announced retirement at end of Congress |
| 111 | Feinstein, Dianne | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 111 | Rockefeller, John D., IV | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Intelligence (Select Committee) | 无 |
| 111 | Wyden, Ron | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 111 | Bayh, Evan | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Intelligence (Select Committee) | Announced retirement at end of Congress |
| 111 | Mikulski, Barbara A. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 111 | Feingold, Russel D. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Intelligence (Select Committee) | Defeated for reelection |
| 111 | Nelson, Clarence William (Bill) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 111 | Whitehouse, Sheldon | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 111 | Bond, Christopher S. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 7 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Intelligence (Select Committee) | Announced retirement at end of Congress |
| 111 | Hatch, Orrin G. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 111 | Snowe, Olympia J. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 111 | Chambliss, Saxby | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Intelligence (Select Committee) | 无 |
| 111 | Burr, Richard | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 111 | Risch, James | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Intelligence (Select Committee) | 无 |
| 111 | Boxer, Barbara | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Ethics (Select Committee) | 无 |
| 111 | Pryor, Mark | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Ethics (Select Committee) | 无 |
| 111 | Brown, Sherrod | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Ethics (Select Committee) | 无 |
| 111 | Isakson, Johnny | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Ethics (Select Committee) | 无 |
| 111 | Roberts, Pat | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Ethics (Select Committee) | 无 |
| 111 | Risch, James | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Ethics (Select Committee) | 无 |
| 111 | Dorgan, Byron | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 17 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES18 | Senate, 3rd Class | Indian Affairs (Select Committee) | Announced retirement at end of Congress |
| 111 | Inouye, Daniel K. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 2 | Inapplicable | 31 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 111 | Conrad, Kent | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 15 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 111 | Akaka, Daniel K. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 19 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 111 | Johnson, Tim | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Indian Affairs (Select Committee) | 无 |
| 111 | Cantwell, Maria | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 111 | Tester, Jon | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 7 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 111 | Udall, Tom | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 8 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 2nd Class | Indian Affairs (Select Committee) | 无 |
| 111 | Barrasso, John A. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Ranking Minority Members:Only ranking minority member | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 111 | McCain, John | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 23 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 111 | Murkowski, Lisa | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 111 | Coburn, Thomas Allen | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 111 | Crapo, Michael Dean | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 5 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 111 | Johanns, Mike | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 6 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 2nd Class | Indian Affairs (Select Committee) | 无 |
| 111 | Schumer, Charles Ellis (Chuck) | Democrat | 2009年4月3日 | 2010年12月22日 | Majority | 1 | Non-standing committee senior party status:Only Vice Chairman | 9 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES102 | Senate, 3rd Class | Library (Joint) | 无 |
| 111 | Dodd, Christopher, J | Democrat | 2009年4月3日 | 2010年12月22日 | Majority | 2 | Inapplicable | 11 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES102 | Senate, 3rd Class | Library (Joint) | Announced retirement at end of Congress |
| 111 | Durbin, Richard J. | Democrat | 2009年4月3日 | 2010年12月22日 | Majority | 3 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES102 | Senate, 2nd Class | Library (Joint) | 无 |
| 111 | Bennett, Robert F. | Republican | 2009年4月3日 | 2010年12月22日 | Minority | 1 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES102 | Senate, 3rd Class | Library (Joint) | Defeated in primaries |
| 111 | Cochran, Thad | Republican | 2009年4月3日 | 2010年12月22日 | Minority | 2 | Inapplicable | 1 | Third period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES102 | Senate, 2nd Class | Library (Joint) | 无 |
| 111 | Schumer, Charles Ellis (Chuck) | Democrat | 2009年4月3日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES102 | Senate, 3rd Class | Printing (Joint) | 无 |
| 111 | Murray, Patty | Democrat | 2009年4月3日 | 2010年12月22日 | Majority | 2 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES102 | Senate, 3rd Class | Printing (Joint) | 无 |
| 111 | Udall, Tom | Democrat | 2009年4月3日 | 2010年12月22日 | Majority | 3 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES102 | Senate, 2nd Class | Printing (Joint) | 无 |
| 111 | Bennett, Robert F. | Republican | 2009年4月3日 | 2010年12月22日 | Minority | 1 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES102 | Senate, 3rd Class | Printing (Joint) | 无 |
| 111 | Chambliss, Saxby | Republican | 2009年4月3日 | 2010年12月22日 | Minority | 2 | Inapplicable | 7 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES102 | Senate, 2nd Class | Printing (Joint) | 无 |
| 111 | Baucus, Max | Democrat | 2009年2月25日 | 2010年12月22日 | Majority | 1 | Committee Chairmen:Only Chairman | NA | NA | Remained until adjournment/assignments | Continues on committee (or successor) | S2500 | Senate, 2nd Class | Taxation (Joint) | 无 |
| 111 | Rockefeller, John D., IV | Democrat | 2009年2月25日 | 2010年12月22日 | Majority | 2 | Inapplicable | NA | NA | Remained until adjournment/assignments | Continues on committee (or successor) | S2500 | Senate, 2nd Class | Taxation (Joint) | 无 |
| 111 | Conrad, Kent | Democrat | 2009年2月25日 | 2010年12月22日 | Majority | 3 | Inapplicable | NA | NA | Remained until adjournment/assignments | Continues on committee (or successor) | S2500 | Senate, 1st Class | Taxation (Joint) | 无 |
| 111 | Grassley, Charles E. | Republican | 2009年2月25日 | 2010年12月22日 | Minority | 1 | Inapplicable | NA | NA | Remained until adjournment/assignments | Continues on committee (or successor) | S2500 | Senate, 3rd Class | Taxation (Joint) | 无 |
| 111 | Hatch, Orrin G. | Republican | 2009年2月25日 | 2010年12月22日 | Minority | 2 | Inapplicable | NA | NA | Remained until adjournment/assignments | Continues on committee (or successor) | S2500 | Senate, 1st Class | Taxation (Joint) | 无 |
| 111 | Schumer, Charles Ellis (Chuck) | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 1 | Non-standing committee senior party status:Only Vice Chairman | 3 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES18 | Senate, 3rd Class | Economic (Joint Committee) | 无 |
| 111 | Kennedy, Edward M. | Democrat | 2009年1月21日 | 2009年8月25日 | Majority | 2 | Inapplicable | 35 | Only period of service | | Inapplicable | SRES18 | Senate, 1st Class | Economic (Joint Committee) | Died 8/25/2009 |
| 111 | Bingaman, Jeff | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 3 | Inapplicable | 23 | First period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 111 | Klobuchar, Amy | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 4 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 111 | Casey, Robert P., Jr. | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 5 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 111 | Webb, Jim | Democrat | 2009年1月21日 | 2010年12月22日 | Majority | 6 | Inapplicable | 3 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES18 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 111 | Brownback, Samuel Dale | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 1 | Inapplicable | 13 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Economic (Joint Committee) | Elected Governor of KS, 2/10/10 |
| 111 | DeMint, James W. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 2 | Inapplicable | 5 | Only period of service | Remained until adjournment/assignments | Continues on committee (or successor) | SRES19 | Senate, 3rd Class | Economic (Joint Committee) | 无 |
| 111 | Risch, James | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 3 | Inapplicable | 1 | Only period of service | Remained until adjournment/assignments | Continues in congress, but not committee | SRES19 | Senate, 2nd Class | Economic (Joint Committee) | 无 |
| 111 | Bennett, Robert F. | Republican | 2009年1月21日 | 2010年12月22日 | Minority | 4 | Inapplicable | 17 | Only period of service | Remained until adjournment/assignments | Inapplicable | SRES19 | Senate, 3rd Class | Economic (Joint Committee) | Defeated in primaries |
| 111 | Durbin, Richard J. | Democrat | 2009年1月6日 | 2010年12月22日 | Majority | 1 | Majority Leadership:Only Majority Whip | 3 | Only period of service | NA | NA | NA | Senate, 2nd Class | Majority whip | 无 |
| 111 | Reid, Harry | Democrat | 2009年1月6日 | 2010年12月22日 | Majority | 1 | Majority Leadership:Only Majority Leader | 3 | Only period of service | NA | NA | NA | Senate, 3rd Class | Majority leader | 无 |
| 111 | Kyl, Jon | Republican | 2009年1月6日 | 2010年12月22日 | Minority | 1 | Minority Leadership:1st Minority Whip | 3 | Only period of service | NA | NA | NA | Senate, 1st Class | Minority whip | 无 |
| 111 | McConnell, Mitch | Republican | 2009年1月6日 | 2010年12月22日 | Minority | 1 | Minority Leadership:Only Minority Leader | 3 | Only period of service | NA | NA | NA | Senate, 2nd Class | Minority leader | 无 |
| 112 | Stabenow, Deborah Ann | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Leahy, Patrick J. | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 37 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Harkin, Tom | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 26 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Conrad, Kent | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 25 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Baucus, Max | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 23 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Nelson, Earl Benjamin (Ben) | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Brown, Sherrod | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Casey, Robert P., Jr. | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Klobuchar, Amy | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Bennett, Michael | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Gillibrand, Kirsten E. | Democrat | 2011年2月2日 | NA | Majority | 12 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Roberts, Pat | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 15 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Lugar, Richard G. | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 35 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Cochran, Thad | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 33 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | McConnell, Mitch | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 26 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Chambliss, Saxby | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Johanns, Mike | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Boozman, John | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Grassley, Charles E. | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 9 | Third period of service | NA | NA | SRES43 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Thune, John | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Hoeven, John | Democrat | 2011年2月2日 | NA | Minority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Agriculture, Nutrition, and Forestry | 无 |
| 112 | Inouye, Daniel K. | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 41 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Leahy, Patrick J. | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 34 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Harkin, Tom | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 26 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Appropriations | 无 |
| 112 | Mikulski, Barbara A. | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 25 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Kohl, Herbert H. | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 19 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Appropriations | 无 |
| 112 | Murray, Patty | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 19 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Feinstein, Dianne | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 13 | Second period of service | NA | NA | SRES42 | Senate, 1st Class | Appropriations | 无 |
| 112 | Durbin, Richard J. | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 13 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Appropriations | 无 |
| 112 | Johnson, Tim | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 15 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Appropriations | 无 |
| 112 | Landrieu, Mary L. | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Appropriations | 无 |
| 112 | Reed, Jack | Democrat | 2011年2月2日 | NA | Majority | 11 | Inapplicable | 5 | Third period of service | NA | NA | SRES42 | Senate, 2nd Class | Appropriations | 无 |
| 112 | Lautenberg, Frank R. | Democrat | 2011年2月2日 | NA | Majority | 12 | Inapplicable | 5 | Third period of service | NA | NA | SRES42 | Senate, 2nd Class | Appropriations | 无 |
| 112 | Nelson, Earl Benjamin (Ben) | Democrat | 2011年2月2日 | NA | Majority | 13 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Appropriations | 无 |
| 112 | Pryor, Mark | Democrat | 2011年2月2日 | NA | Majority | 14 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Appropriations | 无 |
| 112 | Tester, Jon | Democrat | 2011年2月2日 | NA | Majority | 15 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Appropriations | 无 |
| 112 | Brown, Sherrod | Democrat | 2011年2月2日 | NA | Majority | 16 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Appropriations | 无 |
| 112 | Cochran, Thad | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 31 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Appropriations | 无 |
| 112 | McConnell, Mitch | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 19 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Appropriations | 无 |
| 112 | Shelby, Richard C. | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 17 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Hutchison, Kay Bailey | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 15 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Appropriations | 无 |
| 112 | Alexander, Lamar | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Appropriations | 无 |
| 112 | Collins, Susan | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Appropriations | 无 |
| 112 | Murkowski, Lisa | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Graham, Lindsey O. | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Appropriations | 无 |
| 112 | Kirk, Mark | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Coats, Dan | Republican | 2011年2月2日 | NA | Minority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Blunt, Roy | Republican | 2011年2月2日 | NA | Minority | 11 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Moran, Jerry | Republican | 2011年2月2日 | NA | Minority | 12 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Hoeven, John | Republican | 2011年2月2日 | NA | Minority | 13 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Johnson, Ron | Republican | 2011年2月2日 | NA | Minority | 14 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Appropriations | 无 |
| 112 | Levin, Carl | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 33 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Armed Services | 无 |
| 112 | Lieberman, Joseph I. | Independent | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 19 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Armed Services | 无 |
| 112 | Reed, Jack | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 13 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Armed Services | 无 |
| 112 | Akaka, Daniel K. | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Armed Services | 无 |
| 112 | Nelson, Earl Benjamin (Ben) | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Armed Services | 无 |
| 112 | Webb, Jim | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Armed Services | 无 |
| 112 | McCaskill, Claire | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Armed Services | 无 |
| 112 | Udall, Mark | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Armed Services | 无 |
| 112 | Hagan, Kay | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Armed Services | 无 |
| 112 | Begich, Mark | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Armed Services | 无 |
| 112 | Manchin, Joe | Democrat | 2011年2月2日 | NA | Majority | 11 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Armed Services | 无 |
| 112 | Shaheen, Jeanne | Democrat | 2011年2月2日 | NA | Majority | 12 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Armed Services | 无 |
| 112 | Gillibrand, Kirsten E. | Democrat | 2011年2月2日 | NA | Majority | 13 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Armed Services | 无 |
| 112 | Blumenthal, Richard | Democrat | 2011年2月2日 | NA | Majority | 14 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Armed Services | 无 |
| 112 | McCain, John | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 25 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Armed Services | 无 |
| 112 | Inhofe, James M. | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 17 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Armed Services | 无 |
| 112 | Sessions, Jeff | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 13 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Armed Services | 无 |
| 112 | Chambliss, Saxby | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Armed Services | 无 |
| 112 | Wicker, Roger F. | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 4 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Armed Services | 无 |
| 112 | Brown, Scott | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Armed Services | 无 |
| 112 | Portman, Rob | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Armed Services | 无 |
| 112 | Ayotte, Kelly | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Armed Services | 无 |
| 112 | Collins, Susan | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 11 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Armed Services | 无 |
| 112 | Graham, Lindsey O. | Republican | 2011年2月2日 | NA | Minority | 10 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Armed Services | 无 |
| 112 | Cornyn, John | Republican | 2011年2月2日 | NA | Minority | 11 | Inapplicable | 1 | Second period of service | NA | NA | SRES43 | Senate, 1st Class | Armed Services | 无 |
| 112 | Vitter, David | Republican | 2011年2月2日 | NA | Minority | 12 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Armed Services | 无 |
| 112 | Johnson, Tim | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 15 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Reed, Jack | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 15 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Schumer, Charles Ellis (Chuck) | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 13 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Menendez, Robert | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 7 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Akaka, Daniel K. | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 5 | Second period of service | NA | NA | SRES42 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Brown, Sherrod | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Tester, Jon | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Kohl, Herbert H. | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Warner, Mark | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Merkley, Jeff | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Bennett, Michael | Democrat | 2011年2月2日 | NA | Majority | 11 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Hagan, Kay | Democrat | 2011年2月2日 | NA | Majority | 12 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Shelby, Richard C. | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 25 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Crapo, Michael Dean | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 13 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Corker, Bob | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 4 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | DeMint, James W. | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Vitter, David | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Johanns, Mike | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Toomey, Patrick J. | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Kirk, Mark | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Moran, Jerry | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Wicker, Roger F. | Republican | 2011年2月2日 | NA | Minority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Banking, Housing, and Urban Affairs | 无 |
| 112 | Conrad, Kent | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 25 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Budget | 无 |
| 112 | Murray, Patty | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 19 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Budget | 无 |
| 112 | Wyden, Ron | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 16 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Budget | 无 |
| 112 | Nelson, Clarence William (Bill) | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Budget | 无 |
| 112 | Stabenow, Deborah Ann | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Budget | 无 |
| 112 | Cardin, Benjamin L. | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Budget | 无 |
| 112 | Sanders, Bernard | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Budget | 无 |
| 112 | Whitehouse, Sheldon | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Budget | 无 |
| 112 | Warner, Mark | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Budget | 无 |
| 112 | Merkley, Jeff | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Budget | 无 |
| 112 | Begich, Mark | Democrat | 2011年2月2日 | NA | Majority | 11 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Budget | 无 |
| 112 | Coons, Christopher | Democrat | 2011年2月2日 | NA | Majority | 12 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Budget | 无 |
| 112 | Sessions, Jeff | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 9 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Budget | 无 |
| 112 | Grassley, Charles E. | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 31 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Budget | 无 |
| 112 | Enzi, Michael B. | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Budget | 无 |
| 112 | Crapo, Michael Dean | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Budget | 无 |
| 112 | Ensign, John Eric | Republican | 2011年2月2日 | 2011年5月1日 | Minority | 5 | Inapplicable | 9 | Only period of service | | Inapplicable | SRES43 | Senate, 1st Class | Budget | Resigned 5/2/11 due to ethics violation |
| 112 | Cornyn, John | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Budget | 无 |
| 112 | Graham, Lindsey O. | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 7 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Budget | 无 |
| 112 | Thune, John | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Budget | 无 |
| 112 | Portman, Rob | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Budget | 无 |
| 112 | Toomey, Patrick J. | Republican | 2011年2月2日 | NA | Minority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Budget | 无 |
| 112 | Johnson, Ron | Republican | 2011年2月2日 | NA | Minority | 11 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Budget | 无 |
| 112 | Ayotte, Kelly | Republican | 2011年5月10日 | NA | | 1 | Inapplicable | 1 | Only period of service | NA | NA | SRES179 | Senate, 3rd Class | Budget | Replaced Ensign |
| 112 | Rockefeller, John D., IV | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 26 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 112 | Inouye, Daniel K. | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 43 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 112 | Kerry, John F. | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 25 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 112 | Boxer, Barbara | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 112 | Nelson, Clarence William (Bill) | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 112 | Cantwell, Maria | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 9 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 112 | Lautenberg, Frank R. | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 9 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 112 | Pryor, Mark | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 7 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 112 | McCaskill, Claire | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 112 | Klobuchar, Amy | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 112 | Udall, Tom | Democrat | 2011年2月2日 | NA | Majority | 11 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 112 | Warner, Mark | Democrat | 2011年2月2日 | NA | Majority | 12 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 112 | Begich, Mark | Democrat | 2011年2月2日 | NA | Majority | 13 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Commerce, Science, and Transportation | 无 |
| 112 | Hutchison, Kay Bailey | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 19 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 112 | Snowe, Olympia J. | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 17 | Second period of service | NA | NA | SRES43 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 112 | Ensign, John Eric | Republican | 2011年2月2日 | 2011年5月1日 | Minority | 3 | Inapplicable | 11 | Only period of service | | Inapplicable | SRES43 | Senate, 1st Class | Commerce, Science, and Transportation | Resigned 5/2/11 due to ethics violation |
| 112 | DeMint, James W. | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 7 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 112 | Thune, John | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 112 | Wicker, Roger F. | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 4 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Commerce, Science, and Transportation | 无 |
| 112 | Isakson, Johnny | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 112 | Blunt, Roy | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 112 | Boozman, John | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 112 | Toomey, Patrick J. | Republican | 2011年2月2日 | NA | Minority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 112 | Rubio, Marco | Republican | 2011年2月2日 | NA | Minority | 11 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 112 | Ayotte, Kelly | Republican | 2011年2月2日 | NA | Minority | 12 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Commerce, Science, and Transportation | 无 |
| 112 | Heller, Dean | Republican | 2011年5月10日 | NA | | 1 | Inapplicable | 1 | Only period of service | NA | NA | SRES179 | Senate, 1st Class | Commerce, Science, and Transportation | Replaced Ensign |
| 112 | Bingaman, Jeff | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 26 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 112 | Wyden, Ron | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 15 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 112 | Johnson, Tim | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 15 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 112 | Landrieu, Mary L. | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 15 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 112 | Cantwell, Maria | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 112 | Sanders, Bernard | Independent | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 112 | Stabenow, Deborah Ann | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 112 | Udall, Mark | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 112 | Shaheen, Jeanne | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 112 | Franken, Al | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 112 | Manchin, Joe | Democrat | 2011年2月2日 | NA | Majority | 11 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 112 | Coons, Christopher | Democrat | 2011年2月2日 | NA | Majority | 12 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 112 | Murkowski, Lisa | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 9 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 112 | Burr, Richard | Republican | 2011年2月2日 | 2011年5月10日 | Minority | 2 | Inapplicable | 7 | Only period of service | | Continues in congress, but not committee | SRES43 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 112 | Barrasso, John A. | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 112 | Risch, James | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Energy and Natural Resources | 无 |
| 112 | Lee, Mike | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 112 | Paul, Rand | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 112 | Coats, Dan | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 112 | Portman, Rob | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 112 | Hoeven, John | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Energy and Natural Resources | 无 |
| 112 | Corker, Bob | Republican | 2011年2月2日 | NA | Minority | 10 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Energy and Natural Resources | 无 |
| 112 | Heller, Dean | Republican | 2011年5月10日 | NA | | 1 | Inapplicable | 1 | Only period of service | NA | NA | SRES179 | Senate, 1st Class | Energy and Natural Resources | Replaced Burr; In this order: Ms. Murkowski, Mr. Barrasso, Mr. Risch, Mr. Lee, Mr. Paul, Mr. Coats, Mr. Portman, Mr. Hoeven, Mr. Heller and Mr. Corker |
| 112 | Boxer, Barbara | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 19 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Environment and Public Works | 无 |
| 112 | Baucus, Max | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 33 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Environment and Public Works | 无 |
| 112 | Carper, Thomas Richard | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Environment and Public Works | 无 |
| 112 | Lautenberg, Frank R. | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 7 | Second period of service | NA | NA | SRES42 | Senate, 2nd Class | Environment and Public Works | 无 |
| 112 | Cardin, Benjamin L. | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Environment and Public Works | 无 |
| 112 | Sanders, Bernard | Independent | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Environment and Public Works | 无 |
| 112 | Whitehouse, Sheldon | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Environment and Public Works | 无 |
| 112 | Udall, Tom | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Environment and Public Works | 无 |
| 112 | Merkley, Jeff | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Environment and Public Works | 无 |
| 112 | Gillibrand, Kirsten E. | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Environment and Public Works | 无 |
| 112 | Inhofe, James M. | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 17 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Environment and Public Works | 无 |
| 112 | Vitter, David | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 7 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Environment and Public Works | 无 |
| 112 | Barrasso, John A. | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Environment and Public Works | 无 |
| 112 | Sessions, Jeff | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 1 | Second period of service | NA | NA | SRES43 | Senate, 2nd Class | Environment and Public Works | 无 |
| 112 | Crapo, Michael Dean | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 3 | Third period of service | NA | NA | SRES43 | Senate, 3rd Class | Environment and Public Works | 无 |
| 112 | Alexander, Lamar | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Environment and Public Works | 无 |
| 112 | Johanns, Mike | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Environment and Public Works | 无 |
| 112 | Boozman, John | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Environment and Public Works | 无 |
| 112 | Baucus, Max | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 33 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Finance | 无 |
| 112 | Rockefeller, John D., IV | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 25 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Finance | 无 |
| 112 | Conrad, Kent | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 19 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Finance | 无 |
| 112 | Bingaman, Jeff | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Finance | 无 |
| 112 | Kerry, John F. | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 10 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Finance | 无 |
| 112 | Wyden, Ron | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 7 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Finance | 无 |
| 112 | Schumer, Charles Ellis (Chuck) | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 7 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Finance | 无 |
| 112 | Stabenow, Deborah Ann | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Finance | 无 |
| 112 | Cantwell, Maria | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Finance | 无 |
| 112 | Nelson, Clarence William (Bill) | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Finance | 无 |
| 112 | Menendez, Robert | Democrat | 2011年2月2日 | NA | Majority | 11 | Inapplicable | 3 | NA | NA | NA | SRES42 | Senate, 1st Class | Finance | 无 |
| 112 | Carper, Thomas Richard | Democrat | 2011年2月2日 | NA | Majority | 12 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Finance | 无 |
| 112 | Cardin, Benjamin L. | Democrat | 2011年2月2日 | NA | Majority | 13 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Finance | 无 |
| 112 | Hatch, Orrin G. | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 21 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Finance | 无 |
| 112 | Grassley, Charles E. | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 21 | Second period of service | NA | NA | SRES43 | Senate, 3rd Class | Finance | 无 |
| 112 | Snowe, Olympia J. | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 11 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Finance | 无 |
| 112 | Kyl, Jon | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 11 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Finance | 无 |
| 112 | Crapo, Michael Dean | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 7 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Finance | 无 |
| 112 | Roberts, Pat | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Finance | 无 |
| 112 | Ensign, John Eric | Republican | 2011年2月2日 | 2011年5月1日 | Minority | 7 | Inapplicable | 5 | Only period of service | | Inapplicable | SRES43 | Senate, 1st Class | Finance | Resigned 5/2/11 due to ethics violation |
| 112 | Cornyn, John | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Finance | 无 |
| 112 | Coburn, Thomas Allen | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Finance | 无 |
| 112 | Thune, John | Republican | 2011年2月2日 | NA | Minority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Finance | 无 |
| 112 | Burr, Richard | Republican | 2011年5月10日 | NA | | 1 | Inapplicable | 1 | Only period of service | NA | NA | SRES179 | Senate, 3rd Class | Finance | Replaced Ensign |
| 112 | Kerry, John F. | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 26 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Foreign Relations | 无 |
| 112 | Boxer, Barbara | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 13 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Foreign Relations | 无 |
| 112 | Menendez, Robert | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Foreign Relations | 无 |
| 112 | Cardin, Benjamin L. | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Foreign Relations | 无 |
| 112 | Casey, Robert P., Jr. | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Foreign Relations | 无 |
| 112 | Webb, Jim | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Foreign Relations | 无 |
| 112 | Shaheen, Jeanne | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Foreign Relations | 无 |
| 112 | Coons, Christopher | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Foreign Relations | 无 |
| 112 | Durbin, Richard J. | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Foreign Relations | 无 |
| 112 | Udall, Tom | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Foreign Relations | 无 |
| 112 | Lugar, Richard G. | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 33 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Foreign Relations | 无 |
| 112 | Corker, Bob | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Foreign Relations | 无 |
| 112 | Risch, James | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Foreign Relations | 无 |
| 112 | Rubio, Marco | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Foreign Relations | 无 |
| 112 | Inhofe, James M. | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Foreign Relations | 无 |
| 112 | DeMint, James W. | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Foreign Relations | 无 |
| 112 | Isakson, Johnny | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Foreign Relations | 无 |
| 112 | Barrasso, John A. | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 4 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Foreign Relations | 无 |
| 112 | Lee, Mike | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Foreign Relations | 无 |
| 112 | Lieberman, Joseph I. | Independent | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 23 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Levin, Carl | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 33 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Akaka, Daniel K. | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 21 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Carper, Thomas Richard | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Pryor, Mark | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 9 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Landrieu, Mary L. | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 112 | McCaskill, Claire | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Tester, Jon | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Begich, Mark | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Collins, Susan | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 15 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Coburn, Thomas Allen | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 7 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Brown, Scott | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Homeland Security and Governmental Affairs | 无 |
| 112 | McCain, John | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Johnson, Tim | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Ensign, John Eric | Republican | 2011年2月2日 | 2011年5月1日 | Minority | 6 | Inapplicable | 3 | Only period of service | | Inapplicable | SRES43 | Senate, 1st Class | Homeland Security and Governmental Affairs | Resigned 5/2/11 due to ethics violation |
| 112 | Portman, Rob | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Paul, Rand | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Homeland Security and Governmental Affairs | 无 |
| 112 | Moran, Jerry | Republican | 2011年5月10日 | NA | | 1 | Inapplicable | 1 | Only period of service | NA | NA | SRES179 | Senate, 3rd Class | Homeland Security and Governmental Affairs | Replaced Ensign |
| 112 | Leahy, Patrick J. | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 33 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Judiciary | 无 |
| 112 | Kohl, Herbert H. | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 23 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Judiciary | 无 |
| 112 | Feinstein, Dianne | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 19 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Judiciary | 无 |
| 112 | Schumer, Charles Ellis (Chuck) | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 13 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Judiciary | 无 |
| 112 | Durbin, Richard J. | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 11 | Second period of service | NA | NA | SRES42 | Senate, 2nd Class | Judiciary | 无 |
| 112 | Whitehouse, Sheldon | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Judiciary | 无 |
| 112 | Klobuchar, Amy | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Judiciary | 无 |
| 112 | Franken, Al | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Judiciary | 无 |
| 112 | Coons, Christopher | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Judiciary | 无 |
| 112 | Blumenthal, Richard | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Judiciary | 无 |
| 112 | Grassley, Charles E. | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 31 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Judiciary | 无 |
| 112 | Hatch, Orrin G. | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 35 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Judiciary | 无 |
| 112 | Kyl, Jon | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 17 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Judiciary | 无 |
| 112 | Sessions, Jeff | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 15 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Judiciary | 无 |
| 112 | Graham, Lindsey O. | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Judiciary | 无 |
| 112 | Cornyn, John | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Judiciary | 无 |
| 112 | Lee, Mike | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Judiciary | 无 |
| 112 | Coburn, Thomas Allen | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 7 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Judiciary | 无 |
| 112 | Harkin, Tom | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 25 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Mikulski, Barbara A. | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 25 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Bingaman, Jeff | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 15 | Second period of service | NA | NA | SRES42 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Murray, Patty | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 15 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Sanders, Bernard | Independent | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Casey, Robert P., Jr. | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Hagan, Kay | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Merkley, Jeff | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Franken, Al | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Bennett, Michael | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Whitehouse, Sheldon | Democrat | 2011年2月2日 | NA | Majority | 11 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Blumenthal, Richard | Democrat | 2011年2月2日 | NA | Majority | 12 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Enzi, Michael B. | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 15 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Alexander, Lamar | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Burr, Richard | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 7 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Isakson, Johnny | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 7 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Paul, Rand | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Hatch, Orrin G. | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 7 | Second period of service | NA | NA | SRES43 | Senate, 1st Class | Health, Education, Labor, and Pensions | 无 |
| 112 | McCain, John | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Roberts, Pat | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 11 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Murkowski, Lisa | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Kirk, Mark | Republican | 2011年2月2日 | NA | Minority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Health, Education, Labor, and Pensions | 无 |
| 112 | Schumer, Charles Ellis (Chuck) | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 13 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Rules and Administration | 无 |
| 112 | Inouye, Daniel K. | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 29 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Rules and Administration | 无 |
| 112 | Feinstein, Dianne | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 19 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Rules and Administration | 无 |
| 112 | Durbin, Richard J. | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Rules and Administration | 无 |
| 112 | Nelson, Earl Benjamin (Ben) | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 7 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Rules and Administration | 无 |
| 112 | Murray, Patty | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Rules and Administration | 无 |
| 112 | Pryor, Mark | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Rules and Administration | 无 |
| 112 | Udall, Tom | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Rules and Administration | 无 |
| 112 | Warner, Mark | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Rules and Administration | 无 |
| 112 | Leahy, Patrick J. | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Rules and Administration | 无 |
| 112 | Alexander, Lamar | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 5 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Rules and Administration | 无 |
| 112 | McConnell, Mitch | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 23 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Rules and Administration | 无 |
| 112 | Cochran, Thad | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 19 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Rules and Administration | 无 |
| 112 | Chambliss, Saxby | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Rules and Administration | 无 |
| 112 | Hutchison, Kay Bailey | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 15 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Rules and Administration | 无 |
| 112 | Roberts, Pat | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Rules and Administration | 无 |
| 112 | Shelby, Richard C. | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Rules and Administration | 无 |
| 112 | Blunt, Roy | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Rules and Administration | 无 |
| 112 | Landrieu, Mary L. | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 15 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 112 | Levin, Carl | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 33 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 112 | Harkin, Tom | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 26 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 112 | Kerry, John F. | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 26 | NA | NA | NA | SRES42 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 112 | Lieberman, Joseph I. | Independent | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 23 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Small Business and Entrepreneurship | 无 |
| 112 | Cantwell, Maria | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Small Business and Entrepreneurship | 无 |
| 112 | Pryor, Mark | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 9 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 112 | Cardin, Benjamin L. | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Small Business and Entrepreneurship | 无 |
| 112 | Shaheen, Jeanne | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 112 | Hagan, Kay | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 112 | Snowe, Olympia J. | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 17 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Small Business and Entrepreneurship | 无 |
| 112 | Vitter, David | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 7 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Small Business and Entrepreneurship | 无 |
| 112 | Risch, James | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 112 | Rubio, Marco | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Small Business and Entrepreneurship | 无 |
| 112 | Paul, Rand | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Small Business and Entrepreneurship | 无 |
| 112 | Ayotte, Kelly | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Small Business and Entrepreneurship | 无 |
| 112 | Enzi, Michael B. | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 15 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Small Business and Entrepreneurship | 无 |
| 112 | Brown, Scott | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Small Business and Entrepreneurship | 无 |
| 112 | Moran, Jerry | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Small Business and Entrepreneurship | 无 |
| 112 | Murray, Patty | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 17 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Veterans' Affairs | 无 |
| 112 | Rockefeller, John D., IV | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 27 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Veterans' Affairs | 无 |
| 112 | Akaka, Daniel K. | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 21 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Veterans' Affairs | 无 |
| 112 | Sanders, Bernard | Independent | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Veterans' Affairs | 无 |
| 112 | Brown, Sherrod | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Veterans' Affairs | 无 |
| 112 | Webb, Jim | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Veterans' Affairs | 无 |
| 112 | Tester, Jon | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Veterans' Affairs | 无 |
| 112 | Begich, Mark | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Veterans' Affairs | 无 |
| 112 | Burr, Richard | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 7 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Veterans' Affairs | 无 |
| 112 | Isakson, Johnny | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 7 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Veterans' Affairs | 无 |
| 112 | Wicker, Roger F. | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 4 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Veterans' Affairs | 无 |
| 112 | Johanns, Mike | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Veterans' Affairs | 无 |
| 112 | Brown, Scott | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Veterans' Affairs | 无 |
| 112 | Moran, Jerry | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Veterans' Affairs | 无 |
| 112 | Boozman, John | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Veterans' Affairs | 无 |
| 112 | Kohl, Herbert H. | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 23 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 112 | Wyden, Ron | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 16 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 112 | Nelson, Clarence William (Bill) | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 7 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 112 | Casey, Robert P., Jr. | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 112 | McCaskill, Claire | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 112 | Whitehouse, Sheldon | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 112 | Udall, Mark | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Aging (Special Committee) | 无 |
| 112 | Bennett, Michael | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 112 | Gillibrand, Kirsten E. | Democrat | 2011年2月2日 | NA | Majority | 9 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 112 | Manchin, Joe | Democrat | 2011年2月2日 | NA | Majority | 10 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 112 | Blumenthal, Richard | Democrat | 2011年2月2日 | NA | Majority | 11 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 112 | Corker, Bob | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 5 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 112 | Collins, Susan | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 15 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Aging (Special Committee) | 无 |
| 112 | Hatch, Orrin G. | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 3 | Third period of service | NA | NA | SRES43 | Senate, 1st Class | Aging (Special Committee) | 无 |
| 112 | Kirk, Mark | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 1 | Third period of service | NA | NA | SRES43 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 112 | Moran, Jerry | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 1 | Third period of service | NA | NA | SRES43 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 112 | Johnson, Ron | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 1 | Third period of service | NA | NA | SRES43 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 112 | Ayotte, Kelly | Republican | 2011年2月2日 | 2011年5月10日 | Minority | 7 | Inapplicable | 1 | Third period of service | | Continues in congress, but not committee | SRES43 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 112 | Shelby, Richard C. | Republican | 2011年2月2日 | NA | Minority | 8 | Inapplicable | 25 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Aging (Special Committee) | 无 |
| 112 | Graham, Lindsey O. | Republican | 2011年2月2日 | NA | Minority | 9 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Aging (Special Committee) | 无 |
| 112 | Chambliss, Saxby | Republican | 2011年2月2日 | NA | Minority | 10 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Aging (Special Committee) | 无 |
| 112 | Heller, Dean | Republican | 2011年5月10日 | NA | | 1 | Inapplicable | 1 | Only period of service | NA | NA | SRES179 | Senate, 1st Class | Aging (Special Committee) | Replaced Ayotte; In this order: Mr. Corker, Ms. Collins, Mr. Hatch, Mr. Kirk, Mr. Heller, Mr. Moran, Mr. Johnson (Wisconsin), Mr. Shelby, Mr. Graham, and Mr. Chambliss |
| 112 | Feinstein, Dianne | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 112 | Rockefeller, John D., IV | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Intelligence (Select Committee) | 无 |
| 112 | Wyden, Ron | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 112 | Mikulski, Barbara A. | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 112 | Nelson, Clarence William (Bill) | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 112 | Conrad, Kent | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 112 | Udall, Mark | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Intelligence (Select Committee) | 无 |
| 112 | Warner, Mark | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Intelligence (Select Committee) | 无 |
| 112 | Chambliss, Saxby | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 9 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Intelligence (Select Committee) | 无 |
| 112 | Snowe, Olympia J. | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Intelligence (Select Committee) | 无 |
| 112 | Burr, Richard | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 5 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 112 | Risch, James | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Intelligence (Select Committee) | 无 |
| 112 | Coats, Dan | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 112 | Blunt, Roy | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 112 | Rubio, Marco | Republican | 2011年2月2日 | NA | Minority | 7 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Intelligence (Select Committee) | 无 |
| 112 | Boxer, Barbara | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 5 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Ethics (Select Committee) | 无 |
| 112 | Pryor, Mark | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 7 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Ethics (Select Committee) | 无 |
| 112 | Brown, Sherrod | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Ethics (Select Committee) | 无 |
| 112 | Isakson, Johnny | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 5 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Ethics (Select Committee) | 无 |
| 112 | Roberts, Pat | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 15 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Ethics (Select Committee) | 无 |
| 112 | Risch, James | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Ethics (Select Committee) | 无 |
| 112 | Akaka, Daniel K. | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 21 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 112 | Inouye, Daniel K. | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 33 | Only period of service | NA | NA | SRES42 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 112 | Conrad, Kent | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 17 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 112 | Johnson, Tim | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Indian Affairs (Select Committee) | 无 |
| 112 | Cantwell, Maria | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 11 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 112 | Tester, Jon | Democrat | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 112 | Udall, Tom | Democrat | 2011年2月2日 | NA | Majority | 7 | Inapplicable | 3 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Indian Affairs (Select Committee) | 无 |
| 112 | Franken, Al | Democrat | 2011年2月2日 | NA | Majority | 8 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Indian Affairs (Select Committee) | 无 |
| 112 | Barrasso, John A. | Republican | 2011年2月2日 | NA | Minority | 1 | Ranking Minority Members:Only ranking minority member | 5 | Only period of service | NA | NA | SRES43 | Senate, 1st Class | Indian Affairs (Select Committee) | 无 |
| 112 | McCain, John | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 25 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 112 | Murkowski, Lisa | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 9 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 112 | Hoeven, John | Democrat | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 112 | Crapo, Michael Dean | Republican | 2011年2月2日 | NA | Minority | 5 | Inapplicable | 3 | Third period of service | NA | NA | SRES43 | Senate, 3rd Class | Indian Affairs (Select Committee) | 无 |
| 112 | Johanns, Mike | Republican | 2011年2月2日 | NA | Minority | 6 | Inapplicable | 3 | Only period of service | NA | NA | SRES43 | Senate, 2nd Class | Indian Affairs (Select Committee) | 无 |
| 112 | Schumer, Charles Ellis (Chuck) | Democrat | 2011年3月15日 | NA | Majority | 1 | Non-standing committee senior party status:Only Vice Chairman | 11 | Only period of service | NA | NA | SRES103 | Senate, 3rd Class | Library (Joint) | 无 |
| 112 | Durbin, Richard J. | Democrat | 2011年3月15日 | NA | Majority | 2 | Inapplicable | 3 | Only period of service | NA | NA | SRES103 | Senate, 2nd Class | Library (Joint) | 无 |
| 112 | Leahy, Patrick J. | Democrat | 2011年3月15日 | NA | Majority | 3 | Inapplicable | 1 | Only period of service | NA | NA | SRES103 | Senate, 3rd Class | Library (Joint) | 无 |
| 112 | Alexander, Lamar | Republican | 2011年3月15日 | NA | Minority | 1 | Inapplicable | 1 | Only period of service | NA | NA | SRES103 | Senate, 2nd Class | Library (Joint) | 无 |
| 112 | Cochran, Thad | Republican | 2011年3月15日 | NA | Minority | 2 | Inapplicable | 3 | Third period of service | NA | NA | SRES103 | Senate, 2nd Class | Library (Joint) | 无 |
| 112 | Schumer, Charles Ellis (Chuck) | Democrat | 2011年3月15日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 3 | Only period of service | NA | NA | SRES103 | Senate, 3rd Class | Printing (Joint) | 无 |
| 112 | Murray, Patty | Democrat | 2011年3月15日 | NA | Majority | 2 | Inapplicable | 5 | Only period of service | NA | NA | SRES103 | Senate, 3rd Class | Printing (Joint) | 无 |
| 112 | Udall, Tom | Democrat | 2011年3月15日 | NA | Majority | 3 | Inapplicable | 3 | Only period of service | NA | NA | SRES103 | Senate, 2nd Class | Printing (Joint) | 无 |
| 112 | Alexander, Lamar | Republican | 2011年3月15日 | NA | Minority | 1 | Inapplicable | 1 | Only period of service | NA | NA | SRES103 | Senate, 2nd Class | Printing (Joint) | 无 |
| 112 | Chambliss, Saxby | Republican | 2011年3月15日 | NA | Minority | 2 | Inapplicable | 9 | Only period of service | NA | NA | SRES103 | Senate, 2nd Class | Printing (Joint) | 无 |
| 112 | Baucus, Max | Democrat | 2011年2月15日 | NA | Majority | 1 | Non-standing committee senior party status:Only Vice Chairman | NA | NA | NA | NA | S804 | Senate, 2nd Class | Taxation (Joint) | 无 |
| 112 | Rockefeller, John D., IV | Democrat | 2011年2月15日 | NA | Majority | 2 | Inapplicable | NA | NA | NA | NA | S804 | Senate, 2nd Class | Taxation (Joint) | 无 |
| 112 | Conrad, Kent | Democrat | 2011年2月15日 | NA | Majority | 3 | Inapplicable | NA | NA | NA | NA | S804 | Senate, 1st Class | Taxation (Joint) | 无 |
| 112 | Hatch, Orrin G. | Republican | 2011年2月15日 | NA | Minority | 1 | Inapplicable | NA | NA | NA | NA | S804 | Senate, 1st Class | Taxation (Joint) | 无 |
| 112 | Grassley, Charles E. | Republican | 2011年2月15日 | NA | Minority | 2 | Inapplicable | NA | NA | NA | NA | S804 | Senate, 3rd Class | Taxation (Joint) | 无 |
| 112 | Casey, Robert P., Jr. | Democrat | 2011年2月2日 | NA | Majority | 1 | Committee Chairmen:Only Chairman | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 112 | Bingaman, Jeff | Democrat | 2011年2月2日 | NA | Majority | 2 | Inapplicable | 25 | First period of service | NA | NA | SRES42 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 112 | Klobuchar, Amy | Democrat | 2011年2月2日 | NA | Majority | 3 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 112 | Webb, Jim | Democrat | 2011年2月2日 | NA | Majority | 4 | Inapplicable | 5 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 112 | Warner, Mark | Democrat | 2011年2月2日 | NA | Majority | 5 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 2nd Class | Economic (Joint Committee) | 无 |
| 112 | Sanders, Bernard | Independent | 2011年2月2日 | NA | Majority | 6 | Inapplicable | 1 | Only period of service | NA | NA | SRES42 | Senate, 1st Class | Economic (Joint Committee) | 无 |
| 112 | DeMint, James W. | Republican | 2011年2月2日 | NA | Minority | 1 | Inapplicable | 7 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Economic (Joint Committee) | 无 |
| 112 | Coats, Dan | Republican | 2011年2月2日 | NA | Minority | 2 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Economic (Joint Committee) | 无 |
| 112 | Lee, Mike | Republican | 2011年2月2日 | NA | Minority | 3 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Economic (Joint Committee) | 无 |
| 112 | Toomey, Patrick J. | Republican | 2011年2月2日 | NA | Minority | 4 | Inapplicable | 1 | Only period of service | NA | NA | SRES43 | Senate, 3rd Class | Economic (Joint Committee) | 无 |
| 112 | Durbin, Richard J. | Democrat | 2011年1月3日 | NA | Majority | 1 | Majority Leadership:Only Majority Whip | 4 | Only period of service | NA | NA | NA | Senate, 2nd Class | Majority whip | 无 |
| 112 | Reid, Harry | Democrat | 2011年1月3日 | NA | Majority | 1 | Majority Leadership:Only Majority Leader | 4 | Only period of service | NA | NA | NA | Senate, 3rd Class | Majority leader | 无 |
| 112 | Kyl, Jon | Republican | 2011年1月3日 | NA | Minority | 1 | Minority Leadership:1st Minority Whip | 4 | Only period of service | NA | NA | NA | Senate, 1st Class | Minority whip | 无 |
| 112 | McConnell, Mitch | Republican | 2011年1月3日 | NA | Minority | 1 | Minority Leadership:Only Minority Leader | 4 | Only period of service | NA | NA | NA | Senate, 2nd Class | Minority leader | 无 |