[Rockingham]

The Democrats have no politically plausible solution to their Biden senility problem, so that means that they have little choice but to ride it out. Quietly, the Dems will shift resources to House and Senate races in the hope of dominating Congress and checkmating Trump in his second term.

[Alberta's Child]

One of the problems the Dems face with Biden is that they rigged their primaries and forced everyone else except Sanders out of the race to give Biden the nomination. Dumping Biden at this point would give the party a serious credibility problem that would put other seats at risk in tight races.