Atlanta, Savannah, and Macon are still growing quite rapidly, and are cosmopolitan enough to be attractive to blue voters from everywhere. It's basically a liberal leaning city-state versus conservative ex-urb and countryside thing. We used to joke about the Perimeter (the US interstate highway I-285 ring road around the periphery of metro Atlanta) as being the Great Wall of Atlanta....keeping out the redneck barbarians. Now, even the ex-urbs and rural counties are becoming more moderate, as the younger people start voting. The internet does more good for opening up people's minds than bad, over all. Give it ten years and Georgia will at the very least be a swing state. In the meanwhile, I predict that Florida will become reliably blue in five more years.