JIM LEHRER: ... OK.
Speaking of the numbers here, Margaret Warner has a look at what was behind some of tonight's numbers in Iowa.
MARGARET WARNER: Thanks, Jim.
And for that, I'm joined by Stuart Rothenberg, editor and publisher of the Rothenberg Political Report, and Amy Walter, editor-in-chief of the National Journal's political daily, The Hotline.
So let's drill down into these Democratic numbers, first of all. Obama, where was he strongest? How broad was his appeal, Amy?
AMY WALTER, The National Journal: I guess the answer is everywhere. I mean, the appeal was amazing. You look at everything from on the issues, where he beat Hillary Clinton on everything from -- we assumed that he would win on the issue of the war.
But on the economy, voters who said that was their top issue, he beat her by 10 points. He even beat her among what's supposed to be her marquee issue, health care.
So not only was he able to win because of the incredible turnout we've talked about, new voters, the fact here that we know that so much of the vote now coming from people who said this is their very first time voting, he won that group overwhelmingly.
But it was more than just turnout. He actually also won the issues argument.
MARGARET WARNER: And, of course, when you asked these voters what was most important to them, it was very much what Obama had stressed.
STUART ROTHENBERG, Rothenberg Political Report: Well, the top candidate quality -- 52 percent of the Democratic caucus attendees said "can bring change," he won 51 percent of those, Edwards at 20 percent, Clinton at 19 percent.
Never attended a caucus, about 57 percent of Democrats, he won 41 percent. He won women. He won urban voters. He won very liberal and somewhat liberal voters. He won the two young demographic groups, younger voters. It was a stunning victory across the board.
MARGARET WARNER: And Hillary Clinton, where did she show strength? And where did her whole strategy fall short from what we can see about the vote?
AMY WALTER: Well, I think it summed up pretty quickly in what Stu pointed out, when 52 percent of Democrats say they wanted a candidate who could bring about change, 19 percent said they wanted somebody who cares about people. Only 8 percent said electability was their number-one issue.
She did very well. Actually, that's not where she did as well. She did as well on experience. She trounced him on experience, but only 20 percent of voters said that that was a very important concern for them.
So she did well where she needed to, but it just wasn't the top issue.
STUART ROTHENBERG: Let me give her just one little hope here, a strap to hang on here. Among Democrats only, it was Obama 32 percent, Clinton 31 percent. So among core Democrats, she held him about even. There are going to be places where only core Democrats are going to vote.