A Note On Pledged Delegates

As NBC's Chuck Todd points out tonight, Clinton's chances of winning the nomination based on pledged delegates is effectively over tonight.

If Obama keeps his pledged delegate lead to around 150, Clinton needs to win 70% of them on May 6 -- and if not, 80% of them after May 6.

That's more than next to impossible.

What does this mean? A renewed focus on the vote? A focus on the

A focus on the race holistically?

Obama's still won twice as many contests as Hillary, won more of the popular vote, has a nearly insurmountable lead in delegates and has outraised her by some $40 million or so.