Biden = Joke
If the economy seriously tanks a DemonRat might have a chance. But short of that, and our PDJT is the most focused president on jobs and the economy in a very long time, anyone they put forward has a very long uphill battle.
The Clintons and Obungos are going to keep their head's low if they have any sense (and their minders have anything to say about it) so Dinosaur Joe with all his warts, gaffs and grabbing hands is their only hope IMHO.