Hey, we must have posted at same time. Only difference is who comes in to ride to the rescue ?
They need a candidate who can be taken seriously. I doubt Biden can fill the bill (so to speak).
Is Chelsea old enough? Hmm... yes she is (35) but she does she have a political track record? Can she be blackmailed? (yes to the second but no to the first, which IMHO tends to disqualify her)