Santorum will not fly at all in Florida. We have had numerous earnest and religiously pure candidates like him for state office and they never get off the ground outside of a few sparsely populated rural counties.
Like it or not, people in Florida want a non-preachy grown-up with intelligent, practical ideas. That’s why the unlikeable Rick Scott got elected...but heck, he’s doing a good job, and even people who didn’t like him are now coming around.
Santorum has no chance here. Perry (whom I initially liked) will lose badly in SC and nobody wants to vote for the bottom of the heap. So that leaves only Gingrich.