It was quite a night here in charlotte last night. President clinton and president obama have not been the closest of friends for the last several years. But you would not know it last night. An... See More
It was quite a night here in charlotte last night. President clinton and president obama have not been the closest of friends for the last several years. But you would not know it last night. An electrifying endorsement of president obama from the former president. Tonight, the current president takes the stage to officially accept his party's nomination. It's "your voice, your vote." Jake tapper kicks off our coverage this morning. And the white house might have been within their rights to be a little wary of president clinton. But not in the end. Reporter: No. As you point out, theirs is a complicated relationship. A psycho drama, if you will. For that reason, the white house views president clinton as almost an independent voice, to validate president obama's economic arguments. That's what they wanted him to do last night. And that's what he did. Theirs has been a tumultuous relationship. But the former president's endorsement of the current one was strong and unflinching. I want to nominate a man who's cool on the outside. But who burns for america on the inside. And by the way, after last night, I want a man who had the good sense to marry michelle obama. Reporter: Clinton had two basic arguments. One, that while the republicans are intransigent, the president, like him, is all about cooperation, having named republicans and former rivals to his cabinet. Heck. He even appointed hillary. Reporter: Point two, that the president, like him, supports economic principles that will work. While the republicans do not. The former president had several other points to make. The republican argument against the president's re-election was actually pretty simple. We left him a total mess. He hasn't cleaned it up fast enough. So, fire him and put us back in. Reporter: Former president clinton and the arena gave an answer to the question that obama campaign officials seemed to stumble on earlier this week. But are we better off than we were when he took office? Reporter: Afterwards, president obama electrified the audience by surprising them by joining president clinton on stage. Offering a bro hug and a personal presidential applause for a former rival, to which the former president said simply, thanks. Of course, until that moment, it had been kind of a weird day for the democratic convention, george. Lots of infighting about the party platform. And then, of course, the big news they were moving president obama's big speech from the huge outdoor arena to the smaller venue. But at the end of the day, a very well-received speech from former president clinton.
This transcript has been automatically generated and may not be 100% accurate.