I wonder if younger whites in Florida are more conservative than the state's older whites. Many of the retirees came from the the Northeastern US and settled in the South Florida metro, and North Florida might be demographically younger.
I could be wrong, though.
The fastest growing municipality in FL is The Villages, which is in Central FL. This area's retirees mostly came from the Midwest and are thus relatively conservative. As I said earlier in the thread, it is these Midwestern retirees moving into Central FL which has comprised the bulk of new Republican strength in FL.