The real estate mogul trounces his rivals in his home state, setting off a final sprint to lock down 1,237 delegates.

The real estate mogul's final sprint for to lock down 1,237 delegates starts in New York.

Donald Trump will be the Republican nominee if both Ted Cruz and John Kasich stay in the presidential race, Mitt Romney warned on Monday.

The Democratic candidates are debating in Brooklyn Thursday night, five days before the New York primary.