Republican presidential hopefuls acknowledge the audience Sept. 22 in Orlando, Fla., before a debate. They are (from left) former New Mexico Gov. Gary E. Johnson, former Pennsylvania Sen. Rick Santorum, former House Speaker Newt Gingrich, Rep. Ron Paul of Texas, Texas Gov. Rick Perry, former Massachusetts Gov. Mitt Romney, Rep. Michele Bachmann of Minnesota, businessman Herman Cain and former Utah Gov. Jon Huntsman Jr. (Associated Press)

Republican presidential hopefuls acknowledge the audience Sept. 22 in Orlando, Fla., before a debate. They are (from left) former New Mexico Gov. Gary E. Johnson, former Pennsylvania Sen. Rick Santorum, former House Speaker Newt Gingrich, Rep. Ron Paul of Texas, Texas Gov. Rick Perry, former Massachusetts Gov. Mitt Romney, Rep. Michele Bachmann of Minnesota, businessman Herman Cain and former Utah Gov. Jon Huntsman Jr. (Associated Press)