CNN

It's looking like Barack Obama will almost certainly finish up the primary season with more pledged delegates than Hillary Clinton, although it won't be enough to clinch the nomination.

In a Newsweek pieced called "Hillary's New Math Problem," Jonathan Alter writes how despite Clinton's three wins this week, the delegate math is working against her. He suggests Clinton needs very large margins in the 12 remaining primaries, an average of about 23 points, which is more than double the margin of her Ohio win.

If Clinton is not leading in pledged delegates come June, a lead in the popular vote might help her convince superdelegates that she is the stronger candidate. But right now, Clinton trails Obama there as well, by about 600,000 votes.

It all boils down to a pretty messy scenario for the Democrats where the nearly 800 superdelegates could be left to decide on the nominee.

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