Thompson gets big endorsement

Republican Fred Thompson will be endorsed today by the National Right to Life Committee -- a boost for his campaign and the latest indication of the split among social conservatives.

Big names have been dividing their support among five Republican presidential hopefuls. For instance, John Willke, a founder of the Right to Life Committee, endorsed Mitt Romney.

It will be Thompson's biggest endorsement since his late entry into the race in September. He hoped to become the candidate around whom social and religious conservatives could coalesce, but that has not happened.

"I've had a 100 percent pro-life voting record in the United States Senate," an upbeat Thompson told reporters Monday, even as he declined to confirm the endorsement. "And I think they know that, and that's the way I would govern if I was president."