| John Sununu (R) - New Hampshire | Ted Stevens (R) - Alaska | Olympia Snowe (R) - Maine |
| Gordon Smith (R) - Oregon | Richard Shelby (R) - Alabama | Jeff Sessions (R) - Alabama |
| Charles Schumer (D) - New York | Rick Santorum (R) - Pennsylvania | Ken Salazar (D) - Colorado |
| Pat Roberts (R) - Kansas | 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 |
| 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 | Richard Durbin (D) - Illinois |
| Pete Domenici (R) - New Mexico | Elizabeth Dole (R) - North Carolina | Christopher Dodd (D) - Connecticut |
| Mike DeWine (R) - Ohio | Jim DeMint (R) - South Carolina | Mike Crapo (R) - Idaho |
| Larry Craig (R) - Idaho | Jon Corzine (D) - New Jersey | 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 | Hillary Clinton (D) - New York |
| Saxby Chambliss (R) - Georgia | John Chafee (R) - Rhode Island | Maria Cantwell (D) - Washington |
| Richard Burr (R) - North Carolina | Conrad Burns (R) - Montana | Jim Bunning (R) - Kentucky |
| Sam Brownback (R) - Kansas | Christopher Bond (R) - Missouri | Jeff Bingaman (D) - New Mexico |
| Robert Bennett (R) - Utah | Evan Bayh (D) - Indiana | 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 |
