I kinda referenced this the other day, but the fact that his campaign is messaging more of an Atlanta/Suburbs approach to campaigning in Georgia this time around is sort of telling... it's almost like an acknowledgment that they (correctly) think it's going to be difficult to wring more votes out of the rest of the state because the rural areas are already maxed out.
Not criticizing the approach, it's the right one to take (you go where you can theoretically get more votes), but public polling aside (Georgia is seen as one of his better states) it projects a bit of weakness in their position as well.