LAS VEGAS, NV – OCTOBER 18: (L-R) U.S. Sen. Rick Santorum (R-PA), U.S. Rep. Ron Paul (R-TX), former CEO of Godfather’s Pizza Herman Cain, former Massachusetts Gov. Mitt Romney, Texas Gov. Rick Perry, Former Speaker of the House Newt Gingrich and U.S. Rep. Michele Bachmann (R-MN) participate in a Republican presidential debate on October 18, 2011 in Las Vegas, Nevada. Seven GOP contenders are taking part in the debate, which is sponsored by the Western Republican Leadership Conference in Las Vegas and held in the Venetian Hotel’s Sands Expo and Convention Center. (Photo by Ethan Miller/Getty Images)