After sweeping all five contests in Florida, Illinois, Missouri, North Carolina and Ohio on Tuesday, Hillary Clinton has built an even more insurmountable lead over Bernie Sanders for the Democratic nomination. Clinton now has a pledged delegate lead of 1,139 to 825, meaning Sanders would need to win 58 percent of the remaining pledged delegates at stake to draw even with Clinton by June. That's a virtual impossibility given Democrats' all-proportional delegate allocation system. Clinton or Sanders would need to win 2,382 of 4,763 delegates to the Philadelphia convention to clinch the Democratic 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. At this point, Clinton is at 129 percent of the delegates she needs to be "on track" for the nomination, while Sanders is at just 74 percent of what he needs to be "on track."

If there is bad news for Clinton, it's that the next month

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