Former Pennsylvania Senator Rick Santorum waves to candidates after his speech during the Republican National Convention in Tampa, Fla., on Tuesday, Aug. 28, 2012. (AP Photo/Charlie Nei

 

              Former Pennsylvania Senator Rick Santorum waves to candidates after his speech during the Republican National Convention in Tampa, Fla., on Tuesday, Aug. 28, 2012. (AP Photo/Charlie Nei
Former Pennsylvania Senator Rick Santorum waves to candidates after his speech during the Republican National Convention in Tampa, Fla., on Tuesday, Aug. 28, 2012. (AP Photo/Charlie Neibergall)