I found a great site where you can plug in percentages for the remaining contests to see how the delegate count could potentially work for Clinton and Obama.

For Hillary to outright win the nomination, she would have to win every remaining state 60% to 40% and win the remaining unpledged superdelegates by the same margin. That would give her exactly 2,025 delegates, the amount needed to secure the nomination.

If Hillary can win every remaining state by 10 points and 55% of the remaining superdelegates, she can force a brokered convention.

If you plug in current polling numbers that exist for the remaining states, Obama has the nomination sewn up.

So play around and see if you can find a way for Hill to win.