People may talk about Georgia becoming a swing state, but I kind of doubt it. It is, after all, one of the few states that has become more Republican over the past two decades.
Similar to most of the south, after Clinton most of Georgia (minus the Atlanta metro) swung considerably Republican. However, in many of those areas, it has become so heavily GOP that there simply isn't much room to swing further. Meanwhile, in the Atlanta metro it has swung Democratic and there are still more room to move. Suburban Gwinnett and Conn counties are still Republican, but nowhere near the levels they once were.
Now, some of the more exurban areas such as Forsyth is rapidly growing and uber GOP. However the gains from the growth there don't make up for the changes in areas such as Cobb and Gwinnett. Not to mention other portions of Metro Atlanta well and much of the rest of the state has pretty much maxed out how Republican in can get. So the overall dynamics means the state is likely to move into swing state territory. How long that takes is up for debate, but unless the GOP does better with groups they are doing very poorly with, the move towards becoming a swing state is inevitable.