If Kemp narrowly loses, there’s a good chance these voters (or non voters in 2022) could be the difference.
My guess is the ultimate map is basically 2020 with a slightly better performance by Kemp in Cobb/northern Fulton, ect while Abrams does well in Gwinnett and the more diverse suburbs to the east. Rural GA prolly has a pretty universal small R swing. (Similar to the regular GA 2020 Sen race pre runoff). At face value this should be a narrow Kemp victory but if rural GA has even a slight dent in turnout it could spell trouble.
Kemp- Warnock voters will be a real thing. GA is normally inelastic but looking at the primary, Herschel ran way behind Kemp in the Atlanta burbs. These quirks have a funny way of reasserting themselves in November. Look at 2020 where Dems had a massive turnout in GA, AZ (relative to 2016) even after Biden had basically won along with anemic turnout in South Florida.