Tonight's primary contests in Pennsylvania, Arkansas and Kentucky will determine whether the much talked about anti-incumbent mood is real. Not sure where the races stand? Take a look at this interactive feature that explains the tough battle these candidates have in store.
For latest election results, be sure to watch AC360° at 10pm ET.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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