I had a similar thought. The GOP establishment is clearly not happy with Trump. If given a serious enough opportunity, the GOP may be willing to impeach their own President, to replace him with Mike Pence.
Depends on if they can hang a big enough scandal on him.
(there is a story out there that would be sufficient; it's hard to evaluate the credibility of it, but more information could become public and change that)
That would be a tremendously bad idea. Suppressing popular votes for hope (in this case by poorer people without college degrees) is what causes revolution.