Here's my conspiracy theory on the democratic nomination.
Hillary's email baggage get's to heavy for the dems to carry so she drops out. Warren's been bought off not to run with the promise of a high level position. SoS or VP but that's off the table now. Gore sees the door wide open with Hillary's fall from grace and throws his earth friendly hat in the ring. The dems end up with Warren, (Hillary without the baggage,) and Gore, (Bills third term,) fighting for the nomination. Win win for them. Gore gets the nod and asks Warren to be his VP.