A March Bloomberg poll found that most Republican voters believed that if a presidential candidate had a plurality, but not a majority, of delegates, then that person should still get the nomination. And Donald Trump, who could end up with only a plurality of delegates, has suggested that there would be riots if he doesn't get the nomination at the convention. But that's not what the party rules say. A plurality isn't good enough. But the Republican Party leadership is deeply worried that if convention produces a nominee that wasn't the person with the most delegates from the primaries, many will lash out against a "brokered convention" where party big wigs usurped the will of the voters.