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Chris Christie to endorse Romney

NBC News confirms that New Jersey Gov. Chris Christie will make a surprise appearance today and endorse GOP presidential candidate Mitt Romney this afternoon in New Hampshire before tonight's debate.

Romney and Christie will be holding a joint press conference at 3:00 pm ET.

Christie announced last week that he would not be getting into the race, and at that time said he was waiting to endorse down the road. Christie and Romney have had a good relationship for many years, but it is a surprise that it is happening so quickly.

Ironically, the endorsement comes on the heels of a recent "Saturday Night Live" skit, in which the comedian playing Christie tried to convince Republican donors to give Romney a chance.

NBC's Chuck Todd reports that popular New Jersey Governor Chris Christie will endorse Mitt Romney's presidential run.