I honestly doubt a dem has won a legit election for half a century now.
Voter fraud by the left is so out of control that there’s no reason in the world to credit any dem with an honest win.
If memory serves me (and sometimes it doesn't) Indiana, Wisconsin, Ohio, and Pennsylvania just went through some judicial wrestling matches over voter ID laws and this was the first general election where the laws were in place. Maybe these states were never "Blue" to begin with.