How about lower taxes, cheaper housing, better schools, and better jobs. I wonder if they realize it is the red states that are growing?
A big problem that southern states seem to have is that they tend to organize schools at the county, rather than the municipal level. On the plus side, this usually means lower property taxes. On the negative, this usually means that kids from the ghetto parts of the county go to the same schools as those kids in the white collar precincts, something unheard of in most of the NE.
Of course, I'm also for abolishing most public education, so you can take what I say with a grain of salt.