The Iowa Republican Party has certified the results of its caucuses earlier this month. Rick Santorum is 34 votes ahead, but the party will not declare a winner because there are missing results in eight precincts. Before the certification process, Mitt Romney had been declared the winner.

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DAVID GREENE, HOST:

As Mara just mentioned, the debate last night opened with a question about a claim made by Gingrich's ex-wife. Well, Marianne Gingrich gave her exclusive interview to ABC's "Nightline," putting the candidate's personal life in the spotlight once again. NPR's Tamara Keith has more.

TAMARA KEITH, BYLINE: The interview was incredibly hyped, in part because Marianne Gingrich has been silent so far on her ex-husband's presidential candidacy. This was her first television interview since their 1999 divorce.

It took George Lucas more than two decades to bring the movie Red Tails to the screen. It was all the way back in the late '80s that the man behind Star Wars and Indiana Jones fell under the spell of another story of adventure, this one with real-life heroes — the African-American fighter pilots of World War II.

Newt Gingrich's swift rise has been fueled by one thing above all — his forceful performances in the debates. And Thursday night, Gingrich was dominant from the start when he got the first question. It was about an explosive television interview with his ex-wife Marianne.

GOP presidential campaigns and superPACs have been spending millions of dollars on TV and radio advertising ahead of Saturday's South Carolina primary. While the negative superPAC ads air, the candidates are delivering a more positive message.

On the campaign trail, GOP presidential candidate Rick Santorum often discusses his opposition to abortion rights and gay marriage. That message served him well in Iowa with its large contingent of evangelical voters. Christian conservatives are also dominant in South Carolina, which votes Saturday. Santorum hopes to repeat his Iowa performance, but he's been struggling to keep pace in polls.

Renee Montagne has the Last Word in business.

The last Republican presidential debate before Saturday's South Carolina primary was expected to be lively. It didn't disappoint.

It was clear, even before the four remaining candidates met on the stage in Charleston, SC, that at least three of them would face some fairly high-stakes moments that could change the course of the contest. The question going into the debate was would they be able to master those moments?

Whenever the late New York Times caricaturist Al Hirschfeld sketched Carol Channing — whether picturing her as an indomitable Dolly Levi, swathed in feathers and sequins, or as carbon-crazed Lorelei Lee, eyes sparkling like the diamonds that were that splendid creature's best friends — he always made her appear a creature composed entirely of lipstick, mascara and hairspray.

In China during the Lunar New Year holiday, more than 200 million people will travel home in the world's largest annual migration. Every year, Chinese tell horror stories about trying to get train tickets.

The season the New Year falls on Monday, and it was supposed to be different: For the first time, China's rail ministry created a website to reserve seats.

Things didn't work out as planned.