I'd have to see a few more polls before calling GA a tossup, and even then I have extreme doubts that
McCain Edit: Obama would come within four points of McCain.
That having been said, if we continue to see relatively close polling results, this will indicate a potential shift amongst Republican leaning White voters in places like Gwinnett County. If so, this might be a potential shift from Red to Purple over the next few election cycles in GA.
Edit: Apologies, it's the weekend and I should have looked before I posted