Absolutely nothing.  Both Talking Points Memo and Real Clear Politics notice that on the exact same day, Survey USA says that Clinton will win California by 10 points while Zogby says Obama will win by 13.  My own guess is that Clinton will overwhelmingly lose today’s vote in California, but that won’t make up for the millions of absentee votes already cast that have her up by 20, giving her something like a 5-point win at the end of the day.  But again, nobody knows.  I can see it going either way.