Inside, Trump said both the Republican and Democratic systems for choosing candidates are rigged.

Donald Trump: “Whether you like Bernie Sanders or not—I happen to think he’s terrible, but that’s OK. But whether you like him or not—no, no, whether you like him or not, you turn on television every week, 'Bernie Sanders wins, Bernie Sanders wins,' next week, 'Bernie Sanders wins.' He wins every weekend. And then you listen to the pundits: 'But he can't win.’ I say, 'Wait a minute, he's won every week for the last seven weeks, right?’ But he can’t win. And you say, ’What’s going on?’ Then I say, 'Oh, it's a rigged system.’”

Trump and his fellow Republican candidates are expected to attend a gala in Manhattan tonight with hundreds expected to protest Trump outside.