Nunn would bring Georgia into play, much more than Edwards would NC or SC.
Nunn will also play well in SC, Tenn, and Fla - though probably not enough to tip those states to Kerry.
The problem for them will be Nunn's Beliefs -- he is actually a Republican who was a Democrat because that's what you had to be to get elected in Georgia in the past. To carry Georgia or any other state, Nunn will have to run OPPOSITE of Kerry's stated positions, if he changes his views to those of Kerry then even Georgia will turn on him.
Maybe so, but a lot of us Georgians remember "SAM NUNN, WANTS YOUR GUN". Nunn is anti-gun, or at least he used to be.
It could definitely bring Georgia into play. The yahoos down there definitely go for the "local boy"... they even went with the Peanut Farmer over Reagan...