Now that the primaries are underway, votes and delegates matter more than polls. On the Democratic side, Hillary Clinton or Bernie Sanders would need to win 2,382 of Democrats' 4,763 delegates to the Philadelphia convention to clinch the nomination. To help you keep track of who's ahead, the Cook Political Report has devised a delegate scorecard estimating how many delegates Clinton and Sanders would need to win in each primary, caucus, and convention to become the nominee. Unlike on the Republican side, about 15 percent of DNC delegates are unpledged "superdelegates" - a total of 712 elected officials and party leaders - who can support whomever they want at the convention. According to the Associated Press, Clinton began the primary season leading Sanders 362 to 8 among this group. That's a huge head start for Clinton, and it means Sanders would need to win roughly 54 percent of all 4,393 other delegates to reach a bare majority, while Clinton would only need to win 46 percent. Who's Ahead? Pledged Delegates vs. Cook Targets

Following Iowa and New Hampshire,

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