Republicans Face Off in Florida

Giuliani, Huckabee, McCain, Paul, and Romney gear up for tonight's GOP debate at Florida Atlantic University in Boca Raton. NBC's Brian Williams to moderate the event, with questions from Tim Russert and St. Petersburg Times Editor Paul Tash. Candidates can ask one question of each other at the end of the 90-minute clash. Airing live on Florida television and nationwide on MSNBC. Game time: 9 p.m. EST Plus: Romney says hours before kick off: "Tonight I predict that most of the guns will be aimed at me."