| Male | Daniel Akaka,
Lamar Alexander,
Max Baucus,
Bob Bennett,
Joe Biden,
Jeff Bingaman,
Kit Bond,
Sherrod Brown,
Robert Byrd,
Ben Cardin,
Tom Carper,
Bob Casey,
Thad Cochran,
Kent Conrad,
Chris Dodd,
Pete Domenici,
Tom Harkin,
Daniel Inouye,
Edward Kennedy,
Frank Lautenberg,
Patrick Leahy,
Carl Levin,
Richard Lugar,
Robert Menendez,
Bill Nelson,
Ben Nelson,
Barack Obama,
Mark Pryor,
Jack Reed,
Harry Reid,
Jay Rockefeller,
Kenneth Salazar,
Bernard Sanders,
Chuck Schumer,
Arlen Specter,
Ted Stevens,
Jon Tester,
John Warner,
Jim Webb,
Sheldon Whitehouse,
Ron Wyden | Wayne Allard,
Evan Bayh,
Sam Brownback,
Jim Bunning,
Richard Burr,
Saxby Chambliss,
Tom Coburn,
Norm Coleman,
Bob Corker,
John Cornyn,
Larry Craig,
Mike Crapo,
Jim DeMint,
Byron Dorgan,
Dick Durbin,
John Ensign,
Mike Enzi,
Russ Feingold,
Lindsey Graham,
Chuck Grassley,
Judd Gregg,
Chuck Hagel,
Orrin Hatch,
James Inhofe,
Johnny Isakson,
Herb Kohl,
Jon Kyl,
Joseph Lieberman,
Trent Lott,
Mel Martinez,
Mitch McConnell,
Pat Roberts,
Jeff Sessions,
Richard Shelby,
Gordon Smith,
John Sununu,
Craig Thomas,
John Thune,
David Vitter,
George Voinovich | Tim Johnson,
John Kerry,
John McCain |