STEPHANOPOULOS: That's right.
On the Republican side, Mitt Romney has had a big win today. There was a caucus on Wyoming. He won more than 70 percent of the votes, almost all of the delegate stake; a good moral victory for him after that loss in Iowa.
SAWYER: And we also have a brand new poll out tonight from our New Hampshire affiliate, WMUR, cosponsors of tonight's debate. So here's how it looks for these candidates as they poll tonight, as they gather.
For the Democrats, Senator Clinton and Senator Obama are in a dead heat, tied at 33 percent each; John Edwards gaining a bit with 20 percent; and Bill Richardson in fourth with 4 percent.
Senator Obama, of course, gained some ground, moved up about 3 percent at this point in the story.
STEPHANOPOULOS: He did.
And on the Republican side, John McCain is moving up as well. He's now at 33 percent, leading by 6 points over Mitt Romney at 27 percent. Rudy Giuliani holding onto third place at 14 percent, ahead of Mike Huckabee at 11 percent, who, of course, won those caucuses in Iowa just this Thursday night.
SAWYER: And we want everybody out there to know that throughout the night we'll be checking in with our pros at ABC News standing by in the spin room, so named because the candidates' teams flood the room, trying to shape tomorrow's headlines.
And we also have the instant views of all Americans on Facebook, the popular Web site with more than 60 million active users. And Charlie's going to be using questions from the site tonight as well.
ABC's Bianna Golodryga at our Facebook command center.
GOLODRYGA: Good evening, Diane.
Already, more than 1 million people have activated the U.S. politics application on Facebook right now. We already know that there are hundreds of thousands of people taking part in debates. They're answering questions that we've thrown at them, real-time questions for them to answer.
And it's so easy. We invite all of you to participate throughout the evening as well.
Here's what you do. You go to abcnews.com, and you click on politics. Then click on the Facebook button, and you join the debate.
And while the presidential candidates debate on television, Americans can join the debate online and get real-time, behind-the- scenes updates from our reporters who are tracking all of the candidates live.
Diane, we will be updating this throughout the night, checking in with all of our debaters and getting back to you.
SAWYER: All right. A giant conversation taking place tonight.
And you should know, by the way, that we will not be using Facebook to declare winners or losers tonight. You and the voters of New Hampshire are going to do that.
STEPHANOPOULOS: We did want to get a sense of what the voters of New Hampshire are thinking, so went out in the streets and the snowy hills and got a sense of it.
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(UNKNOWN): National security is the issue that I'm most concerned about. That's going to affect my family and my children. Yes, I mean, security is everything to me.
(UNKNOWN): The rising cost of health care. I want to make sure that everyone is covered, but I want to come up with a good plan that works for everyone.
(UNKNOWN): I have no problem with the legal immigrants, but the illegals, I would just like to see the candidates expand more on it and be firm on it.
(UNKNOWN): Being a fisherman, I think that the fuel prices for a lot of working people is one of the major things that I'm concerned about.