When Hillary collapses the Democrats can always vote for Trump. He is, after all, one of them. Trump can even switch parties. He has done it enough that he knows the process. Trump/Hillary, what a winning combination that would be! Bernie wouldnt run with Trump, sorry to say. Bernie may be a socialist loon but at least he is consistent about it.
It would be ironic if Trump won the election, in the GOP, with the evangelicals, conservatives, and establishment republicans sitting out, and the DEMs pushing him over the top.