The KY House is 63% Republican and the KY Senate is 71% Republican. Clearly whatever residual strength Democrats had outside their base there is rapidly dwindling.
And as clearly - without running candidates with crossover (far beyond "base") appeal Democrats can't win statewide. Exactly because this reason.
Kentucky is too far gone no matter who the Democrats run. It was a miracle they held on as long as they did, but their luck has finally run out.
Yeah, that's why Democrats picked up 8 seats in the state Senate this year that Trump won with 80%+. I really wouldn't be so confident, if I were you.