| Sen. Akaka, Daniel K. [D-HI] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Alexander, Lamar [R-TN] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Barrasso, John [R-WY] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Baucus, Max [D-MT] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Bayh, Evan [D-IN] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Begich, Mark [D-AK] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Bennet, Michael F. [D-CO] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Bennett, Robert F. [R-UT] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Bingaman, Jeff [D-NM] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Bond, Christopher S. [R-MO] | | | | | OpenSecrets | N/A | Ballotpedia | N/A | BioGuide |
| Sen. Boxer, Barbara [D-CA] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Brown, Sherrod [D-OH] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Brownback, Sam [R-KS] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Bunning, Jim [R-KY] | | | | | OpenSecrets | N/A | N/A | VoteSmart | BioGuide |
| Sen. Burr, Richard [R-NC] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Burris, Roland [D-IL] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Byrd, Robert C. [D-WV] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Cantwell, Maria [D-WA] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Cardin, Benjamin L. [D-MD] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Carper, Thomas R. [D-DE] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Casey Jr., Robert "Bob" P. [D-PA] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Chambliss, Saxby [R-GA] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Coburn, Tom [R-OK] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Cochran, Thad [R-MS] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Collins, Susan M. [R-ME] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Conrad, Kent [D-ND] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Corker, Bob [R-TN] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Cornyn, John [R-TX] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Crapo, Mike [R-ID] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. DeMint, Jim [R-SC] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Dodd, Christopher J. [D-CT] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Dorgan, Byron L. [D-ND] | | | | | OpenSecrets | N/A | N/A | VoteSmart | BioGuide |
| Sen. Durbin, Richard [D-IL] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Ensign, John [R-NV] | | | | | OpenSecrets | N/A | N/A | VoteSmart | BioGuide |
| Sen. Enzi, Michael B. [R-WY] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Feingold, Russell D. [D-WI] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Feinstein, Dianne [D-CA] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Gillibrand, Kirsten E. [D-NY] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Graham, Lindsey [R-SC] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Grassley, Chuck [R-IA] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Gregg, Judd [R-NH] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Hagan, Kay R. [D-NC] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Harkin, Tom [D-IA] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Hatch, Orrin G. [R-UT] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Hutchison, Kay Bailey [R-TX] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Inhofe, James M. [R-OK] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Inouye, Daniel K. [D-HI] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Isakson, Johnny [R-GA] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Johanns, Mike [R-NE] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Johnson, Tim [D-SD] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Kaufman, Edward E. [D-DE] | | | | | OpenSecrets | N/A | Ballotpedia | N/A | BioGuide |
| Sen. Kennedy, Edward M. [D-MA] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Kerry, John F. [D-MA] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Klobuchar, Amy [D-MN] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Kohl, Herb [D-WI] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Kyl, Jon [R-AZ] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Landrieu, Mary L. [D-LA] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Lautenberg, Frank R. [D-NJ] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Leahy, Patrick J. [D-VT] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Levin, Carl [D-MI] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Lieberman, Joseph I. [I-CT] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Lincoln, Blanche L. [D-AR] | | | | | OpenSecrets | N/A | N/A | VoteSmart | BioGuide |
| Sen. Lugar, Richard G. [R-IN] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Martinez, Mel [R-FL] | | | | | OpenSecrets | N/A | N/A | VoteSmart | BioGuide |
| Sen. McCain, John [R-AZ] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. McCaskill, Claire [D-MO] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. McConnell, Mitch [R-KY] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Menendez, Robert [D-NJ] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Merkley, Jeff [D-OR] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Mikulski, Barbara A. [D-MD] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Murkowski, Lisa [R-AK] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Murray, Patty [D-WA] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Nelson, Bill [D-FL] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Nelson, E. Benjamin [D-NE] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Pryor, Mark L. [D-AR] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Reed, Jack [D-RI] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Reid, Harry [D-NV] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Risch, James E. [R-ID] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Roberts, Pat [R-KS] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Rockefeller IV, John D. [D-WV] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Sanders, Bernard [I-VT] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Schumer, Charles "Chuck" E. [D-NY] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Sessions, Jeff [R-AL] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Shaheen, Jeanne [D-NH] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Shelby, Richard C. [R-AL] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Snowe, Olympia J. [R-ME] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Specter, Arlen [D-PA] | | | | | OpenSecrets | N/A | N/A | VoteSmart | BioGuide |
| Sen. Stabenow, Debbie [D-MI] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Tester, Jon [D-MT] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Thune, John [R-SD] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Udall, Mark [D-CO] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Udall, Tom [D-NM] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Vitter, David [R-LA] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Voinovich, George V. [R-OH] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Warner, Mark R. [D-VA] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Webb, Jim [D-VA] | | | | | OpenSecrets | N/A | Ballotpedia | VoteSmart | BioGuide |
| Sen. Whitehouse, Sheldon [D-RI] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Wicker, Roger F. [R-MS] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
| Sen. Wyden, Ron [D-OR] | | | | | OpenSecrets | FollowTheMoney | Ballotpedia | VoteSmart | BioGuide |
