They've run their whole campaign on, "Dr. Oz isn't from here." There's been almost no mention from Fetterman of what he stands for or believes in (other than the old generic Washington is ruining the country and I'm going to take them down! rhetoric while conveniently neglecting to mention that his own party actually runs Washington right now). And they've been hiding the ball for half the year about his stroke and the fact that he's probably not competent enough to actually do the job at the moment.
And yet, Fetterman, that joke of a candidate, will probably win because Dr. Oz is also a joke of a candidate who is running a terrible campaign (only to be surpassed by an even worse campaign from Mastriano for governor) and is probably at best a RINO.