Fiery charges: Romney, Santorum assail each other
Republican Presidential Debate, Mesa, Ariz., Feb. 22, 2012
Credit: AFP/Getty Images
Workers finish preparing the debate hall before the Republican presidential candidates' debate on February 22, 2012 in Mesa, Arizona. The candidates will be seated for tonight's debate. The Arizona and Michigan primaries are scheduled to be held February 28. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)
