People are acting like Ohio just became Republican leaning this year because these legions of former "WWC" Democrats have now become the bedrock of the state GOP, LOL. Ohio has had a Republican lean for some time, only to be overcome by high turnout Presidential elections (in which it was still at the very best a swing state). It has been more Republican than Democratic for a very long time.
It was also very close to the national popular vote for a very long time. As of 2016, it has ceased to be so.
I'm not convinced that other Republicans would carry the working class areas that Trump carried.