| Lamar Alexander (R) - Tennessee | Kelly Ayotte (R) - New Hampshire | John Barrasso (R) - Wyoming |
| Michael Bennet (D) - Colorado | Roy Blunt (R) - Missouri | John Boozman (R) - Arkansas |
| Scott Brown (R) - Massachusetts | Richard Burr (R) - North Carolina | Saxby Chambliss (R) - Georgia |
| Daniel Coats (R) - Indiana | Tom Coburn (R) - Oklahoma | Thad Cochran (R) - Mississippi |
| Susan Collins (R) - Maine | Bob Corker (R) - Tennessee | John Cornyn (R) - Texas |
| Mike Crapo (R) - Idaho | Jim DeMint (R) - South Carolina | John Ensign (R) - Nevada |
| Michael Enzi (R) - Wyoming | Lindsey Graham (R) - South Carolina | Charles Grassley (R) - Iowa |
| Kay Hagan (D) - North Carolina | Orrin Hatch (R) - Utah | John Hoeven (R) - North Dakota |
| Kay Bailey Hutchison (R) - Texas | James Inhofe (R) - Oklahoma | Johnny Isakson (R) - Georgia |
| Mike Johanns (R) - Nebraska | Ron Johnson (R) - Wisconsin | Mark Kirk (R) - Illinois |
| Herbert Kohl (D) - Wisconsin | Jon Kyl (R) - Arizona | Mike Lee (R) - Utah |
| Carl Levin (D) - Michigan | Richard Lugar (R) - Indiana | Joe Manchin (D) - West Virginia |
| John McCain (R) - Arizona | Claire McCaskill (D) - Missouri | Mitch McConnell (R) - Kentucky |
| Jerry Moran (R) - Kansas | Lisa Murkowski (R) - Alaska | Bill Nelson (D) - Florida |
| Ben Nelson (D) - Nebraska | Rand Paul (R) - Kentucky | Rob Portman (R) - Ohio |
| Jim Risch (R) - Idaho | Pat Roberts (R) - Kansas | Marco Rubio (R) - Florida |
| Bernard Sanders (I) - Vermont | Jeff Sessions (R) - Alabama | Richard Shelby (R) - Alabama |
| Olympia Snowe (R) - Maine | John Thune (R) - South Dakota | Pat Toomey (R) - Pennsylvania |
| Mark Udall (D) - Colorado | David Vitter (R) - Louisiana | James Webb (D) - Virginia |
| Roger Wicker (R) - Mississippi |
