It will do two very complimentary things: First, the pick is so egregiously Leftist that many Conservatives just won’t be able to stomach it. I mean, she is nutty as a fruitcake. They may have indeed been a bit “wobbly,” but there is just some dog food they won’t eat!
Second, she is a hard Lefty and thus will take some of the hard Lefty vote away from Biden—she is NOT obviously demented and confused, like Joe is. Nor is she an obvious moron, like Kamala. So she immediately becomes an option for the religiously committed (and committable) Left.
So Trump wins coming and going on this one. Good!