| Lamar Alexander (R) - Tennessee | Kelly Ayotte (R) - New Hampshire | John Barrasso (R) - Wyoming |
| Mark Begich (D) - Alaska | Michael Bennet (D) - Colorado | Roy Blunt (R) - Missouri |
| John Boozman (R) - Arkansas | Scott Brown (R) - Massachusetts | Richard Burr (R) - North Carolina |
| Robert Casey (D) - Pennsylvania | 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 | Michael Enzi (R) - Wyoming | Lindsey Graham (R) - South Carolina |
| Charles Grassley (R) - Iowa | Orrin Hatch (R) - Utah | Dean Heller (R) - Nevada |
| 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 |
| Amy Klobuchar (D) - Minnesota | Jon Kyl (R) - Arizona | Mike Lee (R) - Utah |
| Richard Lugar (R) - Indiana | Joe Manchin (D) - West Virginia | John McCain (R) - Arizona |
| Claire McCaskill (D) - Missouri | Mitch McConnell (R) - Kentucky | Jeff Merkley (D) - Oregon |
| Jerry Moran (R) - Kansas | Lisa Murkowski (R) - Alaska | Bill Nelson (D) - Florida |
| Ben Nelson (D) - Nebraska | Rand Paul (R) - Kentucky | Rob Portman (R) - Ohio |
| Mark Pryor (D) - Arkansas | Jim Risch (R) - Idaho | Pat Roberts (R) - Kansas |
| Marco Rubio (R) - Florida | Jeff Sessions (R) - Alabama | Richard Shelby (R) - Alabama |
| Olympia Snowe (R) - Maine | Debbie Stabenow (D) - Michigan | Jon Tester (D) - Montana |
| John Thune (R) - South Dakota | Pat Toomey (R) - Pennsylvania | Mark Udall (D) - Colorado |
| David Vitter (R) - Louisiana | Mark Warner (D) - Virginia | Roger Wicker (R) - Mississippi |
