- Amy Klobuchar: (Democrat-Farmer-Labor - Minnesota) 2012
- Arlen Specter: (Republican - Pennsylvania) 2010
- Barack Obama: (Democrat - Illinois) 2010 ^RFP^
- Barbara Boxer: (Democrat - California) 2010 <EPW (Chair), Foreign Relations, Commerce>
- Barbara Mikulski: (Democrat - Maryland) 2010
- Ben Cardin: (Democrat - Maryland) 2012
- Ben Nelson: (Democrat - Nebraska) 2012
- Bernie Sanders: (Independent - Vermont) 2012
- Bill Nelson: (Democrat - Florida) 2012
- Blanche Lincoln: (Democrat - Arkansas) 2010
- Bob Bennett: (Republican - Utah) 2010 <Rules (Ranking), Appropriations, Banking, Joint Ec.>
- Bob Casey: (Democrat - Pennsylvania) 2012
- Bob Corker: (Republican - Tennessee) 2012
- Bob Menendez: (Democrat - New Jersey) 2012
- Byron Dorgan: (Democrat - North Dakota) 2010
- Carl Levin: (Democrat - Michigan) 2008
- Chris Dodd: (Democrat - Connecticut) 2010 ^RFP^
- Chuck Grassley: (Republican - Iowa) 2010
- Chuck Hagel: (Republican - Nebraska) 2008
- Chuck Schumer: (Democrat - New York) 2010 =Conference Vice-Chair= =DSCC Chair=
- Claire McCaskill: (Democrat - Missouri) 2012
- Craig Thomas: (Republican - Wyoming) 2012
- Dan Akaka: (Democrat - Hawai'i) 2012 <Veterans Affairs (Chair), Indian Affairs, Armed Services, Banking, ENR, Homeland Security & Governmental Affairs>
- Danny Inouye: (Democrat - Hawai'i) 2010
- David Vitter: (Republican - Louisiana) 2010
- Debbie Stabenow: (Democrat - Michigan) 2012 =Steering Committee Chair=
- Dianne Feinstein: (Democrat - California) 2012
- Dick Durbin: (Democrat - Illinois) 2008 =Assistant Majority Leader=
- Dick Lugar: (Republican - Indiana) 2012
- Evan Bayh: (Democrat - Indiana) 2010 <Aging, Armed Services, Banking, Intelligence, Small Business>
- Frank Lautenberg: (Democrat - New Jersey) 2008
- George Voinovich: (Republican - Ohio) 2010
- Gordon Smith: (Republican - Oregon) 2008
- Harry Reid: (Democrat - Nevada) 2010 =Majority Leader=
- Herb Kohl: (Democrat - Wisconsin) 2012
- Hillary Rodham Clinton: (Democrat - New York) 2012 ^RFP^ <Armed Services, EPW, HELP, Aging>
- Jack Reed: (Democrat - Rhode Island) 2008
- Jay Rockefeller: (Democrat - West Virginia) 2008
- Jeff Bingaman: (Democrat - New Mexico) 2012 <ENR (Chair), Finance, HELP, Joint Ec.>
- Jeff Sessions: (Republican - Alabama) 2008
- Jim Bunning: (Republican - Kentucky) 2010 <Banking, Budget, ENR, Finance>
- Jim DeMint: (Republican - South Carolina) 2010
- Jim Inhofe: (Republican - Oklahoma) 2008
- Jim Webb: (Democrat - Virginia) 2012 <Armed Services, Foreign Relations, VA, Joint Ec>
- Joe Biden: (Democrat - Deleware) 2008 ^RFP^ <Foreign Relations (Chair), Judiciary>
- Joe Lieberman: (Independent Democrat - Connecticut) 2012
- John Cornyn: (Republican - Texas) 2008 =Conference Vice-Chair=
- John Ensign: (Republican - Nevada) 2012 =NRSC Chair=
- John Kerry: (Democrat - Massachusetts) 2008
- John McCain: (Republican - Arizona) 2010 ^RFP^
- John Sununu: (Republican - New Hampshire) 2008
- John Thune: (Republican - South Dakota) 2010
- John Warner: (Republican - Virginia) 2008
- Johnny Isakson: (Republican - Georgia) 2010
- Jon Kyl: (Republican - Arizona) 2012 =Conference Chair=
- Jon Tester: (Democrat - Montana) 2012 <Banking, ENR, Homeland Security and Governmental Affairs, Small Business, Indian Affairs, VA>
- Judd Gregg: (Republican - New Hampshire) 2010
- Kay Bailey Hutchison: (Republican - Texas) 2012 =Policy Committee Chair=
- Ken Salazar: (Democrat - Colorado) 2010
- Kent Conrad: (Democrat - North Dakota) 2012
- Kit Bond: (Republican - Missouri) 2010 <Intelligence (Ranking), Appropriations, EPW, Small Business>
- Lamar Alexander: (Republican - Tennesee) 2008 <HELP, Rules, Appropriations, EPW>
- Larry Craig: (Republican - Idaho) 2008
- Liddy Dole: (Republican - North Carolina) 2008
- Lindsey Graham: (Republican - South Carolina) 2008
- Lisa Murkowski: (Republican - Alaska) 2010
- Maria Cantwell: (Democrat - Washington) 2012 <Commerce, ENR, Finance, Small Business, Indian Affairs>
- Mark Pryor: (Democrat - Arkansas) 2008
- Mary Landrieu: (Democrat - Louisiana) 2008
- Max Baucus: (Democrat - Montana) 2008 <Finance (Chair), Ag, EPW>
- Mel Martinez: (Republican - Florida) 2010
- Michael Crapo: (Republican - Idaho) 2010
- Mike Enzi: (Republican - Wyoming) 2008
- Mitch McConnell: (Republican - Kentucky) 2008 =Minority Leader=
- Norm Coleman: (Republican - Minnesota) 2008
- Olympia Snowe: (Republican - Maine) 2012
- Orrin Hatch: (Republican - Utah) 2012
- Pat Leahy: (Democrat - Vermont) 2010
- Pat Roberts: (Republican - Kansas) 2008
- Patty Murray: (Democrat - Washington) 2010 =Conference Secretary=
- Pete Domenici: (Republican - New Mexico) 2008
- Richard Burr: (Republican - North Carolina) 2010 <ENR, HELP, Intelligence, VA>
- Richard Shelby: (Republican - Alabama) 2010
- Robert Byrd: (Democrat - West Virginia) 2012 =President Pro Tempore= <Appropriations (Chair), Budget, Armed Services, Rules>
- Ron Wyden: (Democrat - Oregon) 2010
- Russ Feingold: (Democrat - Wisconsin) 2010
- Sam Brownback: (Republican - Kansas) 2010 ^RFP^ <Joint Ec. (Chair), Appropriations, Judiciary>
- Saxby Chambliss: (Republican - Georgia) 2008 <Ag (Ranking), Armed Services, Rules, Intelligence>
- Sheldon Whitehouse: (Democrat - Rhode Island) 2012 <Budget, EPW, Intelligence, Judiciary, Aging>
- Sherrod Brown: (Democrat - Ohio) 2012
- Susan Collins: (Republican - Maine) 2008
- Ted Kennedy: (Democrat - Massachusetts) 2012
- Ted Stevens: (Republican - Alaska) 2008
- Thad Cochran: (Republican - Mississippi) 2008 <Appropriations (Ranking), Ag, Rules>
- Tim Johnson: (Democrat - South Dakota) 2008
- Tom Carper: (Democrat - Deleware) 2012 <Banking, Commerce, Homeland Security and Governmental Affairs, EPW, Aging>
- Tom Coburn: (Republican - Oklahoma) 2010 <HELP, Homeland Security and Governmental Affairs, Judiciary, Indian Affairs>
- Tom Harkin: (Democrat - Iowa) 2008
- Trent Lott: (Republican - Mississippi) 2012 =Minority Whip=
- Wayne Allard: (Republican - Colorado) 2008 *retiring* <Appropriations, Budget, Banking, HELP>