Former Arkansas Governor Mike Huckabee
Best: Maintained the folksy, comfortable style from his first debate performance, even when talking about tough issues. His joke about John Edwards' haircut got the crowd juiced from the start.
Worst: Looked a bit lost when defending his record on tax cuts and his role in the release of a violent criminal. Still remains incapable of defining himself as a serious top-of-the-ticket candidate.
— Mark Halperin