Obama's Big Night at Democratic National Convention 2012

The president made his case for re-election and accepted his party's nomination.
3:00 | 09/07/12

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Transcript for Obama's Big Night at Democratic National Convention 2012
President obama accepted his party's nomination at the democratic national convention. Presented america with a choice going forward. It's "your voice, your vote." Abc's jake tapper is in charlotte this morning with all of the highlights. Jake, the president said it was the clearest choice in a generation. He said, his path is harder, but better. Reporter: George, despite the logistical problems that have plagued this convention and kept thousands of supporters from hearing the president speak last night, the president presented this as a choice, not a referendum, on four difficult years. The president of the united states of america, barack obama. Reporter: President obama came to the charlotte arena with several key points he wanted to convey. Including that things were different from the jubilance of four years ago. Times have changed and so have i. I'm no longer just a candidate. I'm the president. Reporter: He said there remained much work to do. But the country is on the right track. We're getting back to basics. And doing what america's always done best. We are making things again. Reporter: He jeeringly, sneeringly, suggested mitt romney is not up to being commander in chief. You might not be ready for diplomacy in beijing, when you can't visit the olympics without insulting our closest ally. Reporter: And that romney's economic proposals would be a disaster for the middle-class. What did bill clinton call it? You do the arithmetic. Reporter: He saved the soaring orrty for the end of his speech. I never said this would be easy. Yes, our path is harder. But it leads to a better place. Yes, our road is longer. But we travel it together. We don't turn back. Reporter: Earlier in the night, the vice president vouched for his boss. This man has courage in his soul, compassion in his heart, and a spine of steel. Reporter: And there was much chest-thumping about a certain military operation. Ask osama bin laden if he is better off now than he was four years ago. Reporter: And the night was full of tremendous emotion. The vice president choked up when his son, beau, called him his hero. And perhaps, most poignantly, former congresswoman gabby giffords led the crowd in the pledge of allegiance. I pledge allegiance to the flag of the united states of america. Reporter: And now, we are off. President obama, vice president biden and their wives now head to the battleground states of iowa and new hampshire. The first time this campaign season all four are campaigning together. The president will end his day in the battleground state of florida. Campaign officials, george, say they do not expect much, if any, of a post-convention bounce. Thanks very much.

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

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