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New round of Fla. polls show Mitt has substantial lead

Top Talkers: A new NBC News/Marist poll shows Mitt Romney taking 42 percent of likely GOP voters in Florida while Newt Gingrich trails with 27 percent of the vote. The Morning Joe panel – including New York Magazine's John Heilemann and Mike Barnicle – discusses Romney's lead and why Fla. politicians like Jeb Bush and Sen. Marco Rubio still haven't made an endorsement.