It's been years since the smoke-filled rooms of political conventions chose presidential nominees and the Republicans haven't had a real floor-fight since 1976, but Donald Trump is creating a nightmare scenario for the Republican Party. Yesterday, GOP chairman Reince Priebus made a surprising concession when ABC News host George Stephanopoulos asked him a question about the possibility of a contested convention.
Kyle Kondik is Managing Editor of Sabato's Crystal Ball and Spokesman for the University of Virginia Center for Politics. He's also author of the forthcoming book, The Bellwether: Why Ohio Picks the President.