| Jeff Sessions (R) - Alabama | Rick Santorum (R) - Pennsylvania | Ken Salazar (D) - Colorado |
| Pat Roberts (R) - Kansas | Mark Pryor (D) - Arkansas | Barack Obama (D) - Illinois |
| Ben Nelson (D) - Nebraska | Bill Nelson (D) - Florida | Patty Murray (D) - Washington |
| Lisa Murkowski (R) - Alaska | Mitch McConnell (R) - Kentucky | John McCain (R) - Arizona |
| Mel Martinez (R) - Florida | Richard Lugar (R) - Indiana | Trent Lott (R) - Mississippi |
| Joseph Lieberman (I) - Connecticut | Mary Landrieu (D) - Louisiana | Jon Kyl (R) - Arizona |
| John Kerry (D) - Massachusetts | James Jeffords (R) - Vermont | Johnny Isakson (R) - Georgia |
| James Inhofe (R) - Oklahoma | Kay Bailey Hutchison (R) - Texas | Orrin Hatch (R) - Utah |
| Chuck Hagel (R) - Nebraska | Judd Gregg (R) - New Hampshire | Chuck Grassley (R) - Iowa |
| Lindsey Graham (R) - South Carolina | William Frist (R) - Tennessee | Michael Enzi (R) - Wyoming |
| John Ensign (R) - Nevada | Pete Domenici (R) - New Mexico | Mike DeWine (R) - Ohio |
| Jim DeMint (R) - South Carolina | Mike Crapo (R) - Idaho | Larry Craig (R) - Idaho |
| John Cornyn (R) - Texas | Thad Cochran (R) - Mississippi | Hillary Clinton (D) - New York |
| Saxby Chambliss (R) - Georgia | John Chafee (R) - Rhode Island | Maria Cantwell (D) - Washington |
| Conrad Burns (R) - Montana | Jim Bunning (R) - Kentucky | Sam Brownback (R) - Kansas |
| Christopher Bond (R) - Missouri | Robert Bennett (R) - Utah | Max Baucus (D) - Montana |
| George Allen (R) - Virginia | Wayne Allard (R) - Colorado | Lamar Alexander (R) - Tennessee |
| Richard Shelby (R) - Alabama | Gordon Smith (R) - Oregon | Arlen Specter (R) - Pennsylvania |
| Ted Stevens (R) - Alaska | John Sununu (R) - New Hampshire | James Talent (R) - Missouri |
| Craig Thomas (R) - Wyoming | John Thune (R) - South Dakota | David Vitter (R) - Louisiana |
| George Voinovich (R) - Ohio | John Warner (R) - Virginia |
