We now face “the Agnew dilemma”. Nixon would have been impeached, except the Democrats were terrified of his VP, Spiro Agnew, who would take his place. So they hastily dug into the records of notoriously corrupt Maryland, where he had been governor, and found a scandal they could use to compel him to resign.
Biden is clearly in his dotage, and should not be in office; but Kamala Harris is a malignant tumor, so cannot be allow to become POTUS. But it is up to the Democrats to get her out of office, with the double damned problem that they have no one to replace her. Gerald Ford, who replaced Agnew, had no profound enemies in Washington, and otherwise was affable and relatively competent.
But the Democrats are a contentious lot, as well as filled with burning ambition. The number of candidates they had in the last presidential race was ridiculous.