There's a big block of delegates still out in the Great Lake states: Wisconsin, Illinois, Indiana, Michigan, Ohio, Pennsylvania, and New York.
I think that's where it will be decided. Michigan is the first of those tonite. Illinois and Ohio the 17th.
Bernie has to win these handily. We still have a number of southern states out, including big ones like Florida and Georgia that Biden is likely to win easily, and the Bern needs to counter quick or he's out.