Presidential candidates (L-R) Texas Gov. Rick Perry, former U.S. Sen. Rick Santorum, former Massachusetts Gov. Mitt Romney, former Speaker of the House Newt Gingrich, and U.S. Rep. Ron Paul (R-TX) pose for a photos before participating in a Fox News, Wall Street Journal sponsored debate at the Myrtle Beach Convention Center, on January 16, 2012 in Myrtle Beach, South Carolina. Voters in South Carolina will head to the polls on January 21st. to vote in the Republican primary election to pick their choice for U.S. presidential candidate.