A consideration that MSW did not mention but 538 did today....was that the "reluctant rep voters" in the Georgia 6th cared a lot about health care....see quote:

"Issues

Reluctant Trump voters are more likely to believe that health care is a top concern than Trump’s more enthusiastic supporters. In our June poll with SurveyMonkey, voters were asked which issue mattered most to them right now. Overall, 21 percent of reluctant Trump voters said health care (the second-highest issue after “jobs and the economy.” Among other Trump supporters, it ranked third at 15 percent, after the economy and terrorism. Democrats, of course, want to run on the issue of health care and hope the American Health Care Act’s unpopularity will catapult them to victory in 2018."

It would be very helpful if this health care concern translated into an Ossoff victory as the Senates reps are rushing through a hideous bill removing 23 million citizens from health care!