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The pro-Gingrich Winning Our Future received the contribution from Sheldon Adelson. He'd already given the legal limit to Gingrich's campaign, but under the Supreme Court's Citizens United ruling, and other recent changes in the law, he can give as much as he wants to a SuperPAC like Winning Our Future.

Most of the Republican presidential candidates are focused on New Hampshire, which holds its primary next Tuesday. But while former Massachusetts Gov. Mitt Romney began his day campaigning in New Hampshire, by the afternoon was in South Carolina, which holds its primary Jan. 21.

Talk with Tea Party leaders here in South Carolina and you quickly realize that the toughest job in the Mitt Romney campaign would be the assignment of doing outreach to these activists. Maybe not a mission impossible, but close.

Though he said last night that he would go home to reassess his bid for the presidency — a signal that he might drop out of the race — Texas Gov. Rick Perry just tweeted that "the next leg of the marathon is the Palmetto State."

It was billed as the "Commander in Chief" debate, and while Obama earns higher marks for his role as commander in chief than he does overall, Republican hopefuls found plenty to criticize in Saturday night's debate in South Carolina, beginning with Iran.