U.S. Senate seats up for election in 2012

While every seat in the U.S. House of Representatives is up for grabs every two years, only one-third of all Senate seats are offered up to the meat-grinder of popular elections every other year. CDN has compiled a list of every seat that will be eligible for challenge in the 2012 election.

Senators that are retiring

• Jon Kyl (R-AZ)
• Kay Bailey Hitchison (R-TX)
• Joe Lieberman (I-CT)
• Daniel Akaka (D-HI)
• Ben Nelson (D-NE)
• Jeff Bingaman (D-NM)
• Kent Conrad (D-ND)
• Jim Webb (D-VA)
• Herb Kohl (D-WI)

Senators Up for Re-Election

• Richard Lugar (R-IN)
• Olympia Snowe (R-MN)
• Scott Brown (R-Mass)
• Roger Wicker (R-Mississippi)
• Dean Heller (R-NV)
• Bob Corker (R-TN)
• Orrin Hatch (R-UT)
• John Barrasso (R-WY)
• Dianne Feinstein (D-CA)
• Tom Carper (D-DE)
• Bill Nelson (D-FL)
• Ben Cardin (D-MD)
• Debbie Stabenow (D-MI)
• Amy Klobuchar (D-Minn)
• Claire McCaskill (D-Missouri)
• Jon Tester (D-MT)
• Bob Menendez (D-NJ)
• Kirsten Gillibrand (D-NY)
• Sherrod Brown (D-OH)
• Bob Casey, Jr. (D-PA)
• Sheldon Whitehouse (D-RI)
• Bernie Sanders (I-VT)
• Maria Cantwell (D-WA)
• Joe Manchin (D-WV)