| Alabama | Jeff Sessions,
Richard Shelby | | |
| Alaska | Lisa Murkowski | Ted Stevens | |
| Arizona | Jon Kyl,
John McCain | | |
| Arkansas | | Blanche Lincoln,
Mark Pryor | |
| California | | Barbara Boxer,
Dianne Feinstein | |
| Colorado | Wayne Allard,
Kenneth Salazar | | |
| Connecticut | | Chris Dodd,
Joseph Lieberman | |
| Delaware | | Joe Biden,
Tom Carper | |
| Florida | Mel Martinez | Bill Nelson | |
| Georgia | Saxby Chambliss,
Johnny Isakson | | |
| Hawaii | | Daniel Akaka,
Daniel Inouye | |
| Idaho | Larry Craig,
Mike Crapo | | |
| Illinois | | Dick Durbin,
Barack Obama | |
| Indiana | | Evan Bayh,
Richard Lugar | |
| Iowa | Chuck Grassley | Tom Harkin | |
| Kansas | Sam Brownback,
Pat Roberts | | |
| Kentucky | Jim Bunning,
Mitch McConnell | | |
| Louisiana | | Mary Landrieu,
David Vitter | |
| Maine | | Susan Collins,
Olympia Snowe | |
| Maryland | | Paul Sarbanes | Barbara Mikulski |
| Massachusetts | | Edward Kennedy,
John Kerry | |
| Michigan | | Carl Levin,
Debbie Stabenow | |
| Minnesota | | Norm Coleman,
Mark Dayton | |
| Mississippi | | Thad Cochran | Trent Lott |
| Missouri | | Kit Bond,
Jim Talent | |
| Montana | Conrad Burns | Max Baucus | |
| Nebraska | Chuck Hagel | Ben Nelson | |
| Nevada | John Ensign | Harry Reid | |
| New Hampshire | John Sununu | Judd Gregg | |
| New Jersey | | Jon Corzine,
Frank Lautenberg | |
| New Mexico | Jeff Bingaman,
Pete Domenici | | |
| New York | | Hillary Clinton,
Chuck Schumer | |
| North Carolina | Richard Burr,
Liddy Dole | | |
| North Dakota | | Kent Conrad,
Byron Dorgan | |
| Ohio | | Mike DeWine,
George Voinovich | |
| Oklahoma | Tom Coburn | James Inhofe | |
| Oregon | | Gordon Smith,
Ron Wyden | |
| Pennsylvania | | Rick Santorum,
Arlen Specter | |
| Rhode Island | | Lincoln Chafee,
Jack Reed | |
| South Carolina | Jim DeMint,
Lindsey Graham | | |
| South Dakota | John Thune | Tim Johnson | |
| Tennessee | Bill Frist | Lamar Alexander | |
| Texas | John Cornyn,
Kay Bailey Hutchison | | |
| Utah | Bob Bennett,
Orrin Hatch | | |
| Vermont | | James Jeffords,
Patrick Leahy | |
| Virginia | George Allen,
John Warner | | |
| Washington | | Maria Cantwell,
Patty Murray | |
| West Virginia | | Robert Byrd,
Jay Rockefeller | |
| Wisconsin | | Russ Feingold,
Herb Kohl | |
| Wyoming | Mike Enzi,
Craig Thomas | | |