From TPM:

A new Quinnipiac poll in Florida shows a four-way dead heat on the Republican side, much like the Rasmussen poll also out this morning. Here are the numbers, compared to the last Quinnipiac poll from mid-December:

McCain 22% (+9)
Giuliani 20% (-8)
Huckabee 19% (-2)
Romney 19% (-1)
Thompson 7% (-1)
Paul 5% (+3)

Even though it is a four way tie, it is very bad for Rudy. He is betting the bank on Florida and has lost eight points, most of which appear to have gone to McCain.