Fiery charges: Romney, Santorum assail each other
Republican Presidential Debate, Mesa, Ariz., Feb. 22, 2012
Credit: Getty Images
MESA, AZ - FEBRUARY 22: Former Speaker of the House Newt Gingrich (R) shakes hands with U.S. Rep. Ron Paul (R-TX) as Massachusetts Gov. Mitt Romney (2nd R) and former U.S. Sen. Rick Santorum look on before a debate sponsored by CNN and the Republican Party of Arizona at the Mesa Arts Center February 22, 2012 in Mesa, Arizona. The debate is the last one scheduled before voters head to the polls in Arizona's primary on February 28 and Super Tuesday on March 6. (Photo by Justin Sullivan/Getty Images)
