Gravis or not, this is probably gonna be closer to the actual election results than Clinton+7 or Clinton+4
With Clinton's massively superior ground game and GOTV operations, I'd say she's the slight favorite to win Georgia right now. Her chances there are much better than Obama's in Indiana at this point in 2008, at least.
What ground game? There isn't one really yet. They don't have field offices here, and Stacey Abrams's New Georgia Project that was supposed to register hundreds of thousands and put Nunn over the top was a bust.