Maine
Olympia Snowe
*Susan Collins
New Hampshire
~Judd Gregg RET
*Jeanne Shaheen
Massachusetts
Scott Brown
*John Kerry
Rhode Island
*Jack Reed
Sheldon Whitehouse
Connecticut
~Christopher Dodd RET
Joe Lieberman
New York
~Chuck Schumer
~Kirsten Gillibrand
New Jersey
*Frank Lautenberg
Robert Menendez
Washington
~Patty Murray
Maria Cantwell
Oregon
~Ron Wyden
*Jeff Merkley
California
Diane Feinstein
~Barbara Boxer
Minnesota
Amy Klobuchar
*Al Franken
Wisconsin
Herb Kohl
~Russ Feingold
Illinois
*Dick Durbin
~Roland Burris R
Iowa
~Chuck Grassley
*Tom Harkin
Missouri
~Kit Bond RET
Claire McCaskill
North Dakota
Kent Conrad
~Byron Dorgan RET
South Dakota
*Tim Johnson
~John Thune
Nebraska
Ben Nelson
*Mike Johanns
Kansas
~Sam Brownback RET
*Pat Roberts
Idaho
~Mike Crapo
*James Risch
Montana
*Max Baucus
Jon Tester
Wyoming
*Mike Enzi
John Barrasso
Nevada
~Harry Reid
John Ensign
Hawaii
~Daniel Inouye
Daniel Akaka
Alaska
~Lisa Murkowski
*Mark Begich
Arkansas
~Blanche Lincoln
*Mark Pryor
Mississippi
*Thad Cochran
Roger Wicker
Louisiana
*Mary Landrieu
~David Vitter
Oklahoma
*James Inhofe
~Tom Coburn
Texas
Kay Bailey-Hutchinson
*John Cornyn
North Carolina
~Richard Burr
*Kay Hagan
South Carolina
*Lindsey Graham
~Jim DeMint
Georgia
*Saxby Chambliss
~Johnny Isakson
Florida
Bill Nelson
~George LeMieux R
Michigan
*Carl Levin
Debbie Stabenow
Ohio
~George Voinovich RET
Sherrod Brown
Indiana
Dick Lugar
~Evan Bayh RET
Pennsylvania
~Arlen Specter P
Bob Casey
Delaware
Thomas Carper
*Ted Kaufman R
Maryland
~Barbara Mikulski
Ben Cardin
Virginia
Jim Webb
*Mark Warner
Vermont
~Patrick Leahy
Bernie Sanders
West Virginia
Robert Byrd
*John D. Rockefeller
Kentucky
*Mitch McConnell
~Jim Bunning RET
Tennessee
*Alexander Lamar
Bob Corker
Alabama
~Richard Shelby
*Jeff Sessions
Colorado
*Mark Udall
~Michael Bennet
New Mexico
Jeff Bingaman
*Tom Udall
Utah
Orrin Hatch
~Bob Bennett P
Arizona
~John McCain
Jon Kyl
~ 2011
2013
* 2015
P = Primary loss