Transcript for Clinton, Trump Projected to Win Big in Northeastern Primaries
night for both frontrunners. But will it be enough for either of them? Here's your voice, your vote. Good evening, Dan. This was a big night for the two frontrunners. A clean sweep for Donald Trump by huge margins and by Hillary Clinton, a big victory as well. As of tonight, these two candidates are now the prohibited favorites to be their parties' nominees. Tonight at trump tower, Donald Trump was in such a great mood, he even thanksed the people he most loves to hate. I want to thank the media. They've covered me very fair for the last two hours. In all five states, he trounsed the competition. Maryland and Connecticut and Pennsylvania, I mean the whole thing. In every state, getting more than 50% of the vote. He's not bothering to wait for the convention. He's crowning himself. I consider myself the presumptive nominee. Reporter: On the democratic side, Hillary Clinton feeling like her primary race is over too. We will unify our party to win this election and build an America where we can all rise together. An America where we lift each other up instead of tearing each other down. Reporter: Both of them tonight, all but dismissing their opponents, even though their opponents remain in the race. Both trump and Clinton are squarely on the path of victory, with all the momentum of a locomotive. All the states that are voting are on this train line. Rhode Island, Connecticut, Pennsylvania, Delaware and Maryland. Reporter: This is one of the heaviest most heavily populated part of the country. Which may be why the crowd looks so stressed out. We only found one guy willing to talk to us. You can see where this train is headed. Likely to be trump and Clinton. Would that be an easy choice for you? No, it would not. For the first time in a very long time I'm actually considering not voting. Reporter: Because you don't like the candidates? Because I don't think either candidate would make a great choice. Reporter: For the republicans, there's still one more chance to stop trump from getting the 1237 delegates he needs. Indiana. We're going to be spending numerous days in Indiana and it's going to be something really special. He is going to be on a track to the nomination. Reporter: Indiana's importance has led his rivals to team up to take on trump, like contestants on "Survivor." I feel it's very fair for me to be able to go to areas where I can spend my resources most effectively and the same is true for senator Cruz. What's the big deal? Reporter: Cruz agreed to sit out Oregon and New Mexico. We're focusing our energy on the state of Indiana. And governor kasich is focusing his attentions elsewhere. Where did you come up with a scam like that? Saw it in a movie once. Sgl Reporter: It has all the hallmarks of a movie. Not "Turner and hooch". Maybe it's "Thelma and Louise." With the distinct possibility they'll go off the cliff together. Trump couldn't resist mocking them as only trump can. I have never seen a human being eat in such a disgusting fashion. Reporter: This in a week when his campaign had been playing presidential hoping to show a more refined softer spoken version of the candidate. Trump's campaign AIDS insist the whole brash billionaire think is a hack. This article posted by CNN. Donald Trump is no Elijah dolittle. "The main in Spain âª If you have a football team and you're winning and you get to the super bowl, you're not changing your quarterback, right. I don't buy Donald Trump 2.0. I don't think it exists or ever exists. Reporter: Hillary Clinton clearly plans to use trump's temperament. She was already sharpening her lines. In this campaign, it's important that people not just give speeches and get everybody riled up. You need to ask them what are you going to do and how are you going to do it? Don't just give me the rhetoric and the demagoguery. Reporter: Her closing add also positions her as a nu nurturing alternative to the balm bash on the republican side. Tonight, that imagery of America hugging it out, transform under to a new campaign slogan for cli Clinton. We're going to families are supported, streets are safe and communities are strong and where love trumps hate. Reporter: Because one person she's not quite ready to hug it out with, Bernie sanders. Or maybe he's not ready to hug it out with her. Any chance of a rocky moment? If the voter turnout sigh, we stand an excellent chance. Reporter: Of course in rocky 1, he's the sentimental favorite, but he loses to Apollo creed. Today at Philadelphia's iconic Redding terminal market, he seemed to be savering every moment. It felt almost rude to rain on his parade. Everybody's asking you the obvious question. Are you getting tired of being asked when you're going to quit? Well, it's an absurd question and we're going to focus on the issues and I think we're going to do just fine. Can I -- as opposed to candidates who raise millions from Wall Street and the fossil fuel industries? Yeah, I think we're doing just F fine. Reporter: He took Rhode Island. I want to thank all of you for being prepared to stand up, fight back and make this country the nation we know it can become. Reporter: Clinton now says it's time for him to close ranks, just as she did after the bruising 2008 democratic primary. I didn't put down conditions. I didn't say you know what, if senator Obama does X, Y, and Z, I'll support him. I said no matter what our differences might be, they pail in comparison to the differences between us and the republicans. Reporter: Sanders clearly isn't there. His top strategist says that a they'll reassess where they stand. The fact is he's not going to catch Hillary Clinton. And he's got to decide does he want to drag this out beyond the voting. Reporter: Now that the asella primary is over, it's on to Indiana and points west. I'm David Wright for "Nightline" in Philadelphia.
This transcript has been automatically generated and may not be 100% accurate.