Are you familiar with the Southern Baptists? There are over fifteen millions members.
To be honest, I actually live in Florida, and attend a Baptist church! What a coincidence!. 
I live in Florida too! Although the "Southern" in Southern Baptist orginated in Georgia.
Technically, you could argue that Florida is more Northern than Southern, so I suppose that is fair.
Yes, we are pretty much South New York here lol. Although since the 1940's the SBC has shifted some of its regional identification.