New York primary election

Surrounded by family and supporters, Republican presidential candidate Donald Trump gives his victory speech in New York on April 19, 2016.

U.S. Senator and Democratic Party presidential candidate Bernie Sanders speaks during a rally at Penn State University in State College, Pa., on April 19, 2016.

A woman passes by posters for Democratic presidential candidate Hillary Clinton during the New York State presidential primaries on April 19, 2016 in Chappaqua, New York.

A woman walks past a voting sign at PS 3 on April 19, 2016 in the Brooklyn borough of New York City. Voters are going to the polls in New York for the presidential primary election.

A woman with her daughter exits their voting station at the Mt. Sinai Baptist Church on April 19, 2016 in the Brooklyn borough of New York City. Voters are going to the polls in New York for the presidential primary election.

Democratic presidential candidate Hillary Clinton and her husband former President Bill Clinton greet voters before casting their ballots at a polling station during the New York State presidential primaries on April 19, 2016 in Chappaqua, New York.

Security agents stand close as Republican Presidential candidate Donald Trump votes at his local polling station in New York’s primary on April 19, 2016 in New York City.

Democratic presidential candidate Sen. Bernie Sanders, I-Vt., and his wife Jane, gesture at supporters as they take a walk in New York’s Times Square, on April 19, 2016.

Democratic presidential candidate Sen. Bernie Sanders, I-Vt., speaks to supporter Michael Cantalupo who said he is unable to vote in the New York primaries while taking a walk in New York’s Times Square, April 19, 2016.

Republican presidential candidate Donald Trump returns to his apartment building after voting in New York, on April 19, 2016.

Supporters look at a cell phone picture of Democratic presidential candidate Hillary Clinton after casting their ballots at a polling station during New York State primary presidential election on April 19, 2016 in Chappaqua, New York. New York began voting Tuesday in a high-stakes presidential primary tipped to hand Hillary Clinton and Donald Trump victories in the race to clinch the Democratic and Republican tickets to the White House.

A polling station in Brooklyn is open for voting in the presidential primary for the state of New York on April 19, 2016.

People cast their votes at a polling station in New York on April 19, 2016.

Republican Presidential candidate Donald Trump votes at his local polling station in New York’s primary on April 19, 2016 in New York City.

Democratic presidential candidate former Secretary of State Hillary Clinton (C) and her husband former U.S. president Bill Clinton (L) greet poll workers before voting at Douglas Grafflin Elementary School on April 19, 2016 in Chappaqua, New York.

Democratic presidential candidate former Secretary of State Hillary Clinton and her husband, former U.S. president Bill Clinton, casts her ballot at Douglas Grafflin Elementary School on April 19, 2016 in Chappaqua, New York.

Democratic presidential candidate former Secretary of State Hillary Clinton (L) and her husband former U.S. president Bill Clinton vote at Douglas Grafflin Elementary School on April 19, 2016 in Chappaqua, New York.