California has 55 electoral votes and with Obama at 200 votes now, it's hard to see California not going Democratic. That would leave 15 electoral votes needed. Only 15 votes and there are 7 in Iowa where he has been up in the polls, 7 in Oregon and 11 in Washington that are also likely to go Democratic. So Florida, Indiana, Virginia and everything else is just gravy if he wins it, or insignificant of not.
It's not over, but very likely over.