Elizabeth Santorum, eldest daughter of Republican presidential candidate, former Pennsylvania Sen. Rick Santorum, campaigns for her father in a hanger at Sarasota Bradenton International Airport in Sarasota, Fla., Sunday, Jan. 29, 2012, where Santorum was ascheduled to appear. He is staying home in Philadelphia to be with his 3-year-old hospitalized daughter Isabella. (AP Photo/Paul Sancya)