| Ted Stevens (R) - Alaska | Arlen Specter (R) - Pennsylvania | Olympia Snowe (R) - Maine |
| Richard Shelby (R) - Alabama | Jeff Sessions (R) - Alabama | Rick Santorum (R) - Pennsylvania |
| Ken Salazar (D) - Colorado | John Rockefeller (D) - West Virginia | Harry Reid (D) - Nevada |
| Mark Pryor (D) - Arkansas | Ben Nelson (D) - Nebraska | Lisa Murkowski (R) - Alaska |
| Mitch McConnell (R) - Kentucky | John McCain (R) - Arizona | Mel Martinez (R) - Florida |
| Richard Lugar (R) - Indiana | Trent Lott (R) - Mississippi | Blanche Lincoln (D) - Arkansas |
| Joseph Lieberman (I) - Connecticut | Mary Landrieu (D) - Louisiana | Jon Kyl (R) - Arizona |
| Tim Johnson (D) - South Dakota | 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 |
| Byron Dorgan (D) - North Dakota | Pete Domenici (R) - New Mexico | Elizabeth Dole (R) - North Carolina |
| Jim DeMint (R) - South Carolina | Mike Crapo (R) - Idaho | Larry Craig (R) - Idaho |
| John Cornyn (R) - Texas | Kent Conrad (D) - North Dakota | Susan Collins (R) - Maine |
| Norm Coleman (R) - Minnesota | Thad Cochran (R) - Mississippi | Tom Coburn (R) - Oklahoma |
| Saxby Chambliss (R) - Georgia | Robert Byrd (D) - West Virginia | Richard Burr (R) - North Carolina |
| 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 |
| 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 |
