It’s a victory for Rick Santorum tonight in Missouri, and so far he’s got early leads in the Colorado and Minnesota caucuses.

A man who was once the prime suspect in his wife's disappearance kills himself and his two young sons in a fiery house explosion, according to authorities. Anderson talks to sources familiar with the case.

The Syrian regime says life in Homs is normal, but the pictures and reports tell a much different story. In an emotional interview, a Syrian activist gives voice to a reality of death and destruction.

In tonight's broadcast, we reference a WaPo/ABC poll that suggests Romney's support in the November general election is waning. The Romney campaign has publicly questioned the methodology behind the poll. Our guest, Benjamin Ginsberg, a senior Romney campaign advisor, called it into question on air with us. To be fair, we think ABC News and the Washington Post should have a chance to defend themselves. Below, we've pasted their explanation of the poll and included a link to their site.

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He may be a non-gambler, but Mitt Romney had a good night in Vegas. He left town as the night's big winner, capturing his second strong victory in a row.

The result was no surprise; but the blocs he won on his way to a majority of the vote were.

This is a state where nearly half of Republicans describe themselves as not just conservative, but "very conservative." It's also a closed primary, where the only voters weighing in are part of the Republican base. But Romney decisively captured conservatives, tea partiers and evangelicals on his way to a win.

Just how big was Romney's win? It was so dominant he drew more support than the rest of the field combined. A quarter of Saturday's voters were Mormon, and 9 in 10 of those voters backed Romney. However,as his campaign was quick to point out, even if you take those voters out of the mix, the former Massachusetts governor would still have walked away with a double-digit advantage.

There were a few sour notes for Romney tonight. One of the few groups he lost were self-identified independents - a bloc Republicans need to win big to beat President Obama in this battleground state come this fall. That group went instead to Ron Paul.

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