Republican presidential candidates participate in a Republican presidential debate in Sioux City

 
Republican presidential candidates participate in a Republican presidential debate in Sioux City
Republican presidential candidates (L-R), former Pennsylvania Sen. Rick Santorum, Texas Gov. Rick Perry, former Massachusetts Gov. Mitt Romney, former House Speaker Newt Gingrich, Rep. Ron Paul (R-TX), Rep. Michele Bachmann (R-MN), and former Utah Gov. Jon Huntsman participate in a Republican presidential debate in Sioux City, Iowa, December 15, 2011. REUTERS/Eric Gay/Pool (UNITED STATES - Tags: POLITICS ELECTIONS)