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Republican presidential candidate New Jersey Governor Chris Christie speaks to guests gathered for a campaign event at Jersey Grille on July 24, 2015 in Davenport, Iowa.
Republican presidential candidate New Jersey Governor Chris Christie speaks to guests gathered for a campaign event at Jersey Grille on July 24, 2015 in Davenport, Iowa.

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Chris Christie might 'go nuclear' in next GOP debate

New Jersey Governor Chris Christie talks about the next GOP debate on "The Tonight Show with Jimmy Fallon."

Chris Christie might 'go nuclear' in next GOP debate

New Jersey Governor Chris Christie talks about the next GOP debate on "The Tonight Show with Jimmy Fallon."