In 2012, Romney led all the Georgia polls by at least 8
In 2008, Obama had a 1 point lead in one Georgia poll. McCain led the other 25 polls taken after the conventions
It's definitely in play, they just need to put in a little investment. If Trump is going all in in PA, OH and FL, might as well try to expand the map to GA and AZ.
Trump's not going all in in Pennsylvania. He has virtually no campaign in the state.
I'll go full useless anecdote on you and mention that my father lives in my hometown in rural Berks County (just outside of "the collar") and he isn't seeing anything from Trump's campaign, but getting a lot of Hillary calls. Nor is he hearing a noticeable difference in % of supporters at his blue collar factory than with any other GOPer. Probably useless info though.