Republican presidential candidate and former Massachusetts Gov. Mitt Romney signs autographs during his appearance at the NASCAR Sprint Cup Series 54th Daytona 500 race at the Daytona International ... more 

Republican presidential candidate and former Massachusetts Gov. Mitt Romney signs autographs during his appearance at the NASCAR Sprint Cup Series 54th Daytona 500 race at the Daytona International Speedway in Daytona Beach, Florida, February 26, 2012. REUTERS/Brian Blanco (UNITED STATES - Tags: SPORT MOTORSPORT) less