That's a pretty safe bet....I bet she wins...
There have been way too many people somewhere close to the middle, let's call them the undecided and the "undecided-adjacent", who have said, for way too long, "If given the opportunity, I'd vote for anybody other than Biden or Trump! I can't believe those two chumps are our only choices!"
They've been given another choice and they're going to take it, no matter how bad a choice it actually is. They're going to swing those locations that must be swung and Harris will win.
Well, I'm pretty sure. I won't give odds but I wouldn't hesitate to bet even money on it.