| 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 | Joseph Lieberman | Chris Dodd |
| 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 | Richard Lugar | Evan Bayh |
| Iowa | Chuck Grassley | Tom Harkin |
| Kansas | Sam Brownback,
Pat Roberts | |
| Kentucky | Jim Bunning,
Mitch McConnell | |
| Louisiana | David Vitter | Mary Landrieu |
| 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 | Conrad Burns | Max Baucus |
| Nebraska | Chuck Hagel,
Ben Nelson | |
| Nevada | John Ensign | Harry Reid |
| New Hampshire | Judd Gregg,
John Sununu | |
| New Jersey | | Jon Corzine,
Frank Lautenberg |
| New Mexico | Pete Domenici | Jeff Bingaman |
| 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 | 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 | |