| Senators | State |
| Harry Reid / John Ensign | |
| Mike Crapo / Jim Risch | |
| Richard Shelby / Jeff Sessions | |
| Daniel Inouye / Daniel Akaka | |
| Arlen Specter / Bob Casey Jr. | |
| Thad Cochran / Roger Wicker | |
| Mike Enzi / John Barrasso | |
| Kay Bailey Hutchison / John Cornyn | |
| Orrin Hatch / Bob Bennett | |
| Richard Lugar / Evan Bayh | |
| Frank Lautenberg / Bob Menendez | |
| Max Baucus / Jon Tester | |
| Carl Levin / Debbie Stabenow | |
| Herb Kohl / Russ Feingold | |
| Bill Nelson / George LeMieux | |
| Blanche Lincoln / Mark Pryor | |
| Ron Wyden / Jeff Merkley | |
| Olympia Snowe / Susan Collins | |
| Kit Bond / Claire McCaskill | |
| Lindsey Graham / Jim DeMint | |
| Mary Landrieu / David Vitter | |
| Lisa Murkowski / Mark Begich | |
| Ben Nelson / Mike Johanns | |
| Judd Gregg / Jeanne Shaheen | |
| John Kerry / Scott Brown | |