(CNN) - It's not surprising Florida Gov. Charlie Crist is standing directly behind John McCain as the Arizona senator delivers his victory speech. Exit polls show Crist's last-minute endorsement of McCain may have been crucial to his victory.
Over 40 percent of primary voters indicated Crist's decision to back McCain had an effect on their vote. Because those voters went to McCain overwhelmingly, the governor's endorsement clearly played a key role in McCain's win over Mitt Romney.
- CNN Producer Alexander Mooney