They heard he had a stroke but the Dems lied (but, but, but...Santos!) about how impaired he was and delayed the debates until most of the early voting was done. Not that electing a guy who just had a stroke (or who died, like that state rep) isn't monumentally stupid anyway.
And Fetterman wasn't barely smarter than Walker before his stroke. Now he's the poster child for the Dems along with Joke.