More from the comments:
I agree with him on every aspect but the winner (I’m a GA6 resident). Handel will indeed make this closer than it should be, but she will win by 2 pts. Like Nunn and Carter there is hand wringing about losing to the D. This will be closer than these two races, but the R’s will turnout enough to win. Not sure D can grow anymore then 4/20 primary results. A majority R district will win, if they show up.
It doesn’t appear that there is any piece of real estate in the 1980’s version of GA-6 that is in today’s GA-6. I think the author is not telling the truth.