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After gaining 17 percent in NH, Huntsman to leave race

Top Talkers: As the race in South Carolina heats up, 2012 GOP candidate Jon Huntsman has decided to bow out of the race less than a week before the state's primary and endorse Mitt Romney. The Morning Joe panel – including Newsweek's Tina Brown, Columbia University's Dr. Jeffrey Sachs, Mike Barnicle, and MSNBC's Rev. Al Sharpton – discusses.