Ann Romney, wife of Republican U.S. presidential candidate Mitt Romney, autographs an American History textbook as she meets supporters as she campaigns for her husband at David's Real Pitt BBQ in Gainesville, Florida, October 25, 2012. Florida is expected to play a key role as a swing state in the upcoming US presidential election which will be held on November 6, 2012. REUTERS/Brian Blanco (UNITED STATES - Tags: POLITICS ELECTIONS USA PRESIDENTIAL ELECTION)