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JULY 25: Republican presidential candidate, New Jersey Governor Chris Christie speaks to the press after greeting people at the Italian American Heritage Festival on July 25, 2015 in Des Moines, Iowa. A recent poll had Christie trailing most of his Republican rivals in Iowa. Christie is hoping to gain support in the state with several campaign stops scheduled over this weekend. (Photo by Scott Olson/Getty Images)
JULY 25: Republican presidential candidate, New Jersey Governor Chris Christie speaks to the press after greeting people at the Italian American Heritage Festival on July 25, 2015 in Des Moines, Iowa. A recent poll had Christie trailing most of his Republican rivals in Iowa. Christie is hoping to gain support in the state with several campaign stops scheduled over this weekend. (Photo by Scott Olson/Getty Images)

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    Chris Christie: I know I'm going to be president

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Chris Christie: I know I'm going to be president

Republican presidential candidate Chris Christie responds to the New York Times' request for him to drop out of the race.

Chris Christie: I know I'm going to be president

Republican presidential candidate Chris Christie responds to the New York Times' request for him to drop out of the race.