If it's Biden they'll vote for Biden.
It doesn't matter if Biden is their worst choice. Every Democrat will vote for him in order to get rid of Trump.
People can mock Biden with memes and his own gaffs. Democrats won't care.
For Democrats it's anyone but Trump.
Biden is a legitimate threat and everyone better start taking the threat seriously.
If you don't understand this you don't understand Democrats.
(Yes, I know about his son Hunter and Ukraine, China, and drugs but don't hold out hope that will stop him. Unless any of the allegations pan out it's not going to stop Democrats voting for Biden).
Won’t just be “Unknown D” at the top of the ballot. As in Texas in 2018 it will be “new” Democrats voting straight party ballot meaning a sweep of local offices and judges even if they don’t win a state (as Buzzo won the big cities in Texas, as did the Democrat gov. candidate but they didn’t win their own races which were statewide).