Candidates debate 2012 02 23

Republican presidential candidates (L-R) U.S. Rep. Ron Paul (R-TX), former U.S. Sen. Rick Santorum, former Massachusetts Gov. Mitt Romney, and former Speaker of the House Newt Gingrich participate in the Pledge Of Allegiance ahead of a debate sponsored by CNN and the Republican Party of Arizona at the Mesa Arts Center February 22, 2012 in Mesa, Arizona.