They don't need to run. They don't need to win. They don't care about anyone's loss of rights. They're the heralds of fascism just as much as the other party. It's all identity politics. Trump winning means maximum fundraising. In that way, he's actually a gift to the democratic party. If Biden lives long enough and wins, they will immediately cast the shadow of Trump over the next election as the next existential threat and money will flow again into the party coffers from pearl-clutching liberal donors. When Trump dies, they will have to prop up some "New Trump" since they aren't going actually undermine capital to create better conditions. idpol is the only thing the democratic party ever does in US "elections".