Is it really that weird for a poll to show that the Democrat who just won a statewide election is leading his race (against Trump's handpicked celebrity crank) while the Democrat who just lost a statewide election is losing her race?
It's not necessarily weird in the abstract, but GA is a state that has seen little-to-no split-ticket voting in recent election cycles and an even more demographics-driven electorate than is usual in this country.
Abrams is probably still favored, if trends of the past ten to fifteen years continue in the state, but incumbency could save Kemp.