Taking on Gary Peters? Very slim chance.
Taking on Debbie Stabenow? Hahaha, no.
I think Stabenow is, on paper at least, more vulnerable than Peters. She seems like a poor fit for her state (unlike Peters), but got extremely lucky in her previous races because they were all in Democratic wave years (including 2000, which was an incredibly bad year for Senate Republicans) and her GOP opponents ran awful campaigns.
As far as this race is concerned... My gut feeling tells me that there is a 85% chance that Stabenow wins in a landslide and a 15% chance or so that the race goes down to the wire. But nothing in between.
Agree on the race being either down to the wire or a landslide. Stabenow is, however, more entrenched and well-known than Peters.
Anyway, Epstein is not a good candidate, her strong ties to Trump mean she'll likely have no crossover appeal given polarization