Deadlines might be coming or past but with the DNC’s super delegates, nothing is out of reach. They could vote for someone and health issues or criminal activity after the convention, and someone has to jump in. So far the nod is going to Joe. If he gets the nomination and then becomes ill or in jail, they would have to put someone in every democrat would vote for, and Michelle has a 70% approval rating in the party. It still could happen.