Polls are not dependable in Florida, for the simple reason in 2008 & 2012 less than 2.5% of Iowans participated in GOP caucus. So, polling all Iowans is a shot in the dark. The result will depend on which side is more energized to show up on a cold winter evening, and sit through a couple hours of boring speeches. If governor Branstad stays in the news about his take on Rafael Cruz, that could make a difference.
That makes sense, but the pollsters were delivering weekly polls in IOWA, regularly. The best I can come up with is the volatility right now, with TRUMP challenging that Cruz lead of a week ago, or so, and the fact that it is now 7 days out, or what ever it is. Thanks entropy.