I predict the winner of the Republican primary in Florida tonight will be Mitt Romney, in a very close race.
Reasons: from what I've read, it appears he has the stronger ground operation and get-out-the-vote effort. He's advertised heavily, out-spending McCain. Polls seem to show him trending upward ever-so-slightly over McCain---here's an example...
And here's another.
A Romney victory would make him the front-runner in the GOP race, but not by much. The race would still be on.
But it's very close in Florida, and a lot of the good political reporters on the web are shrugging their shoulders and saying "who knows", when it comes to who will win. So we'll see. But I predict: Romney to be the narrow victor tonight.