Kemp probably skates by since it'll be a Biden midterm, and Georgia is doing slightly better than Florida at the moment.
DeSantis is screwed though. If say, Marco Rubio decided to abandon his Senate seat and challenge him in the primary, he'd get flattened, let alone what his chances would be in a general election (they aren't good.)
I can see Kemp facing a strong primary challenge as well given he's going out of his way to find the worst possible response to practically everything. Even Trump went on record saying he reopened the state too early.