You can see the numbers headed in Obama's direction, with the blacker dots representing more recent polls, the lighter ones older polls. With Bill Clinton neutralized and all the big free media breaks falling into Obama's lap (like the "Yes We Can" viral video and the surprise Maria Shriver endorsement), Hillary's best hope at this point appears to ride out the clock.
For Obama, his task for Tuesday is simply to survive. He needs to finish within 200 delegates of Clinton to keep it close, because the rest of the month is tailor made for Obama
So Hillary's task is to defeat Obama decisively on Tuesday.