Biden has run for president several times. Each time, he gets 2-3% of the primary voters. He is not popular with democrat voters. He never has been.
This election cycle is weird as hell.
Consider the possibility that the democrat goal in this election is not to elect a candidate.
The goal is to destroy the American people's faith in the election process.
Every "error" in printing ballots, every "error" in addressing ballots, every "error" in mailing ballots to people who died or moved away decades ago, every ballot found in a ditch or dumpster, every announcement that we won't be done counting for weeks after the polls are closed, every car trunk or semi trailer full of ballots that will be found after the initial count, every vote over the number of registered voters in any precinct is directed at this goal.
They know they can't beat Trump with any candidate they have available. Their only hope, their only goal it to be able to spend the next four years delegitimizing the next term. Russia Russia, Russia and endless impeachments hobbled the first four Trump years, this is the planned Phase II.
Got all that?
Now imagine what happens if Trump wins by 120-150% of the vote!...