DEMOCRATS                                         

Daniel Akaka (Hawaii)*                                                         
Jeff Bingaman (New Mexico)*                       
Sherrod Brown (Ohio)                                
Maria Cantwell (Washington)                      
Benjamin Cardin (Maryland)                       
Thomas Carper (Delaware)                         
Robert Casey (Pennsylvania)                        
Kent Conrad (North Dakota)*                    
Diane Feinstein (California)                          
Amy Klobuchar (Minnesota)                        
Herb Kohl (Wisconsin)*                                                                                  
Joseph Lieberman (I-Connecticut)*                                 
Joe Manchin (West Virginia)
Claire McCaskill (Missouri)                                       
Robert Menendez (New Jersey)                                
Bill Nelson (Florida)                                      
E. Benjamin Nelson (Nebraska)*                                 
Bernard Sanders (I-Vermont)                                                
Debbie Stabenow (Michigan)                                    
Jon Tester (Montana)                                     
Jim Webb (Virginia)*   
Sheldon Whitehouse (Rhode Island)      

REPUBLICANS

Scott Brown (Massachusetts)
John Barrasso (Wyoming)
Bob Corker (Tennessee)
Orrin Hatch (Utah)
Dean Heller (Nevada)
Kay Bailey Hutchison (Texas)*
Jon Kyl (Arizona)*
Richard Lugar (Indiana)**
Olympia Snowe (Maine)*
Roger Wicker (Mississippi)                                  

*Not seeking reelection in 2012 

** Lost Primary Nomination