Because he probably wont lose the election and he absolutely, definitely will never up in prison. That is a total fantasy. The Democrats have not sufficiently got their house in order imho as there should really be a frontrunner or maybe 3 electable frontrunners by now with the election only a year away. There is too much in it for Rep senators yet, being a senior elected rep in a party that is in power is too attractive a proposition. It brings money, influence, status, jobs on committee's, lobbyists want them, all kinds of things. I hate the man but pinning hopes on them is a pipedream.