That is a great question to which I have given some thought. I don't think that either Clinton or Obama would consider asking the other to be a running mate. While that might make a good ticket, it might be too much "minority" for some Americans (not me...I am one). Plus if the nominating race goes all the way to the convention, it might be hard for them to team up after bashing eachother towards the party finish line. I think that Edwards would like to see Hillary out. It would give him an easier opportunity to position himself in the front to either ask Obama to serve second string or to possibly set himself up to be a VP nominee again. I did not think that was possible considering 2004 but anything is possible. He is strong in the south, with Unions and with some who fear that a minority candidate cannot win in November.