I wonder if Hillary being that kind of a real serious disappointment as a candidate on her own is going to be a factor as well?
Clinton is the prototype of a tightly-controlled, overly-scripted politician. Every appearance or speech she gives is rehearsed and carefully planned out ahead of time.
It won't take much to knock her off her game. And there is no way she will be able to keep up with Trump. He's going to wear her out.