 The path of least resistance is actually to keep Joe Biden in place, who first of all, you would have to convince him to give up the race anyway. And then if he gives up the race, they got a Kamala Harris problem. She's less popular than Joe Biden, but she's also the first black female vice president of the United States. How do you shove her aside with the historic argument that back in the day when a president stood down, his white male vice president also stood down and didn't run back before we had primary conventions? Good luck with that precedent.