 But it is conceivable. It is possible. The president has to decide that he's not going to run. If that doesn't happen, then there's no contest. There's no way anybody sees of forcing him off the ballot. There doesn't seem to be any appetite for trying to find a way to undo his nomination other than with his consent. He controls the 3,900 delegates that are going to be at the convention. They're obligated to vote for him on the first ballot.