Republican presidential candidates (L-R) former Utah Governor Jon Huntsman, former U.S. Senator Rick Santorum (R-PA), former Massachusetts Governor Mitt Romney, U.S. Rep. Ron Paul (R-TX), former House Speaker Newt Gingrich and Texas Governor Rick Perry participate in a Republican presidential candidates debate in Concord, New Hampshire, January 8, 2012. REUTERS/Shannon Stapleton (UNITED STATES - Tags: POLITICS ELECTIONS POLITICS)