After ducking out of the early contests, Rudi Giuliani has spent big time and big money in Florida, where Republicans will be voting next Tuesday. But the latest polls show a 20- to 30-point lead has vanished, and he's now in third or fourth place behind McCain, Romney, and perhaps tied with Huckabee. On Saturday the Democrats will face off in South Carolina, where Barack Obama has a big lead. It's dropped a bit, but the big story could be John Edwards. We get a campaign update from Susan MacManus, who teaches political science at the University of South Florida, and David Corn, political editor for Mother Jones magazine.