Republican incumbents in 2012: Jon Kyl of Arizona, Richard Lugar of Indiana, Olympia Snowe of Maine, Scott Brown of Massachusetts, Roger Wicker of Mississippi, John Ensign of Nevada, Bob Corker of Tennessee, Open seat in Texas, Orrin Hatch of Utah, John Barrasso of Wyoming. Democrats have 21 seats up for election, not including 2 independents who caucus with the Democrats. Do something stupid: Then you are Done. All 435 voting seats in the United States House of Representatives will be up for election. Oh and this damn adminstration is done also!!!
Only Wicker and Barrasso deserve no primary opponent IMO.