| 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 | | Barbara Mikulski,
Paul Sarbanes | |
| 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 | | Max Baucus,
Conrad Burns | |
| Nebraska | Ben Nelson | Chuck Hagel | |
| Nevada | Harry Reid | John Ensign | |
| New Hampshire | | Judd Gregg,
John Sununu | |
| 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 | Ron Wyden | Gordon Smith | |
| Pennsylvania | Arlen Specter | Rick Santorum | |
| Rhode Island | | Lincoln Chafee,
Jack Reed | |
| South Carolina | | | Jim DeMint,
Lindsey Graham |
| South Dakota | John Thune | Tim Johnson | |
| Tennessee | | Lamar Alexander,
Bill Frist | |
| 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 | |