Preliminary exits are 52%-48% Clinton-Obama. With the usual proviso that exit polls have been pretty much junk this primary season...

(although really, what's the point? If Clinton gets a 10-15% win, she'll claim momentum. If she wins from 5-10%, she'll do the same. If it's very close, then things might get a little tricky. But he can't win here.)

(having said that, with polls now closed, even MyDD is feeling pessimistic about the chances of a big Hillary win..)