Karen Santorum helps prepare her husband, Republican presidential hopeful Rick Santorum, for an interview after a rally Monday in Montgomery, Ala. Mr. Santorum is putting up a fight against his well-funded rival, Mitt Romney. (Associated Press)

Karen Santorum helps prepare her husband, Republican presidential hopeful Rick Santorum, for an interview after a rally Monday in Montgomery, Ala. Mr. Santorum is putting up a fight against his well-funded rival, Mitt Romney. (Associated Press)