Hillary Clinton Looks to Sweep Bernie Sanders in 5 Primaries

Clinton and Sanders are competing especially hard in delegate-rich Pennsylvania.
1:53 | 04/26/16

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Transcript for Hillary Clinton Looks to Sweep Bernie Sanders in 5 Primaries
And their front-runner, Hillary Clinton, hoping to put away the challenge from Bernie sanders with a strong showing today. The big prize of Pennsylvania is key and ABC's David Wright is on the scene in Philadelphia right now. Good morning, David. Reporter: Good morning, George. We're at a union headquarters, the American federation of teachers and just for today as you can see it is a hub of Hillary Clinton's get out the vote machine. Union workers, teachers in this case, picking up voter lists, getting ready to knock on doors and get people to the polls. With their help she's expecting a big win today. Closing out her campaign here at Philadelphia's city hall, Hillary Clinton was brimming with confidence. Look, I have the greatest respect for senator sanders but really what he and his supporters are now saying just doesn't add up. I have 2.7 million more votes than he has. Reporter: Just outside -- Feel the Bern. Reporter: Busloads of Bernie supporters intent on crashing the party. Clinton is favored to win all five of the states voting today, virtually shutting down any pathway to victory for Bernie sanders. But sanders is vowing to fight on. He's going to participate in every primary and caucus tilling the end. Reporter: Already he sounds like he sees the end in sight. I will do everything in my power to make sure that no republican gets into the white house in this election. Reporter: Clinton is already looking past him saving her sharpest jabs for the republicans. Actually I think when you run for president you should tell people what you want to do. You shouldn't make promises you can't keep. You shouldn't just, you know, rant and rave with the trump-like demagoguery. Reporter: Already out on the stump you can hear Clinton reaching out to those sanders supporters talking about the minimum wage, talking about rolling back citizens united hoping to win that them over to her cause. Robin. All right, David, thank you.

This transcript has been automatically generated and may not be 100% accurate.

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