I think there's a more solid Democratic base especially in the southern part of Florida than there is anywhere in North Carolina.
The Chapel Hill-Durham area is pretty solidly Democratic and Wake/Mecklenburg counties are quickly trending D.
Yes, but there are 3 counties in the Miami-Fort Lauderdale area that total over 2 million voters and those votes traditionally break down at least something like 60-40 in favor of the Democratic party. It's not a tail that wags the dog situation the way Cook County(IL) or King county(WA) are in their respective states but there's nothing like that in North Carolina.