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Donald Trump’s path to 1,237 delegates

Trump is the only GOP candidate who still has a shot at winning the necessary 1,237 delegates required for the nomination. Here's how he gets there.

Republican presidential hopeful Donald Trump points to supporters following a rally at the Pennsylvania Farm Show Complex & Expo Center on April 21, 2016 in Harrisburg, Penn. (Photo by Mark Makela/Getty)
Republican presidential hopeful Donald Trump points to supporters following a rally at the Pennsylvania Farm Show Complex & Expo Center on April 21, 2016 in Harrisburg, Penn.Getty Images

Steve Kornacki

Steve Kornacki, author of "The Red and the Blue: 1990s and the Birth of Political Tribalism," is a national political correspondent for NBC News and MSNBC.