Virginia and Florida are northern states, essentially. North Carolina is basically there as well, thoguh the GOP still likes to pretend it isn't sometimes. The Republican candidate for Governor is a big city mayor who was born in Ohio. South Carolina and Georgia will be like that fairly soon as well. Becoming completely dependent on the "old" South is a loser strategy because soon it will be just Alabama, Mississippi, Arkansas, and Louisiana.
Don't judge South Carolina on the basis of the Metrolina area or the Grand Strand. South Carolina will be safely Southern for the immediate future.