Donald Trump , Hillary Clinton win Pennsylvania, Delaware primaries

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Donald Trump and Hillary Clinton won the Pennsylvania Delaware primaries. (AP)

Donald Trump and Hillary Clinton are the winners in the Pennsylvania and Delaware primaries.

View Primary Election Results

In Pennsylvania, Trump received support across the demographic spectrum and Clinton prevailing despite a weak appeal to millennials.

VIDEO: Trump thanks Pennsylvania

Trump, a New York billionaire businessman, pulled in support from a majority of Republican men and women and voters from cities, suburbs and rural areas. He also had the backing of the majority of voters with annual incomes over $100,000 or under $50,000, according to results from an exit poll conducted for The Associated Press and television networks by Edison Research.

Texas U.S. Sen. Ted Cruz and Ohio Gov. John Kasich, who have trailed Trump in the campaign, split support among the minority of GOP voters who said they preferred a political insider, the exit poll showed.

On the Democratic side, Vermont U.S. Sen. Sanders earned the votes of a wide majority of voters under age 30.

VIDEO: Clinton speaks to supporters in Philadelphia

But Clinton, a former U.S. first lady and U.S. senator from New York, won among voters 45 and older, as well as women, and she turned in a solid performance in the Democratic bastion of Philadelphia and its suburbs, where two in five Democrats live.

For Trump, the battle goes on in Pennsylvania even after his decisive win. The state's GOP primary is something of a beauty contest, since only 17 of 71 delegates are promised to the statewide winner and 54 others - three elected in each of 18 congressional districts - are essentially free agents and can vote for whomever they want at the convention, under state party rules.

In suburban Harrisburg, Dave Penn, 61, liked that Trump doesn't "take any bull" and that he "lets the upper echelons know where he stands." In Hamburg, Laura Seyler, 63, voted for Trump because he's a "bully" and "will take the bat and straighten things out."

On the Democratic side, the 127 delegates up for grabs in the primary are apportioned based on the vote in each congressional district, which could deliver a significant delegate haul for Clinton if she prevails. Another 62 are divvied up later proportionally based on the statewide vote.

In Philadelphia, Susan Barr-Toman, 48, called Clinton "the most qualified candidate" and predicted that even Republicans would support her over Trump in the fall contest.

Trump is also the projected winner in Maryland, Rhode Island, and Connecticut.

ABC News is projecting Clinton as the winner in the Maryland and Connecticut Democratic primaries.

ABC News projects Bernie Sanders will win the Rhode Island Democratic primary.

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