A SCENARIO
Mike Pence understands he will never be President. He could become an American hero by doing the right thing with the electoral votes, and resigning after Inauguration. That would show he was not acting out of personal interest.
Trump then names a new VP, who must be confirmed by both houses. Ford replaced Agnew with an overwhelming vote in each house. But what if the Dems do not approve the VP choice and keeps Nancy a heartbeat away.
perhaps pence can conditionally resign. if the house chooses to impeach him, he stays. if the house promises to vote in a trump approved surrogate, they approve the surrogate vp and pence resigns.
i could not imagie the house taking up such an offer, so it seems likely to me it would precipitate another house impeachment. hopefully ignored by the senate.