The basic problem for the Dems is that in some states, they already can't get someone else on the ballot except for Biden.
And it's clear that Obama is behind the scenes calling the shots. But every other candidate he might like loses in the polls. Kamala Harris has as bad a public persona as Demented Joe.
So what the Dems need to do is, get Obama elected president again! But that's illegal, you say. 22nd Amendment, right?
But it's actually easy to work around legally, by having Biden pick Obama for VICE president. Then, if Biden is elected, he can resign immediately after inauguration, and then Obama becomes president.
There is no law against this switcheroo trick. It could be done indefinitely. Of course, Biden won't be able to do it again, but in 4 years Obama could have someone else "run for president" on his ticket and get a 4th term.
And this is exactly the same kind of filthy, sneaky backroom politics Dems are known for, and their voting base forgives. They should try it.