True, and if the President were to die or have a health crises before then I would hope that the DNC picks someone great- there are several options, but I don't think they would do any better than Biden. That is to say it will be the same four swing states and the Dems will win with 300+ E.V.s Absent that scenario, you can't beat someone with no one and Biden will sweep the primaries and get the nomination. The pledged delegates will be Bidens and the super delegates are never going to abandon an incumbent (who already beat Trump) as long as he has a pulse.