Top Republicans Face Off as N.H. Primary Nears

With just about six weeks left before the presidential primary in New Hampshire, the top candidates for the Republican nomination have started slinging mud at each other. Former New York Mayor Rudy Giuliani and former Massachusetts Gov. Mitt Romney traded barbs during the holiday weekend while campaigning in the state.

Andrea Seabrook sorts out who said what with Robert Smith, who is on the road with the Giuliani camp, and Brian Naylor, who is following the Romney campaign.