Christie helped Trump with debate prep

Donald Trump, Chris Christie
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Chris Christie is taking on a bigger role behind the scenes of Donald TrumpDonald TrumpMcMullin: Republicans 'putting party ahead of principle' Axelrod: I don't know any strategist on either side who privately thinks Trump will win RNC chairman: Ryan one of 'brightest stars' in Republican Party MORE's presidential campaign, helping the GOP front-runner with his debate prep.

The New Jersey governor coached Trump prior to the last Republican debate, held March 10 in Miami, reported Friday.

Christie took time out from a trip to Florida for his 30th wedding anniversary to help Trump at the businessman's Mar-a-Lago Club in Palm Beach on the eve of the debate, an unidentified source told the news outlet.

Christie's help followed an unruly debate earlier this month in Detroit during which Trump made a suggestive comment about his genitals in response to a barb from then-rival Marco RubioMarco Rubio56 memorable moments from a wild presidential race New York Times endorses Rubio's rival Rubio: GOP Congress could go in different direction than Trump MORE, who had mocked the size of Trump's hands.

The debate in Miami was the most civil of the 12 GOP bouts this cycle, with candidates mostly avoiding personal attacks. Rubio dropped out of the race shortly after, following a loss in Florida's primary.

Trump later decided not to attend a subsequent debate with Ted CruzTed Cruz56 memorable moments from a wild presidential race Is Georgia turning blue? Five takeaways from money race MORE and John Kasich, his remaining GOP competitors, and it was canceled.

Christie caught flak last month after endorsing Trump following his own exit from the GOP race. Critics called the governor's endorsement politically motivated.

He appeared behind Trump at a news conference March 1 and told reporters later that week in New Jersey that he was going away for his anniversary. noted that during a news conference March 8, Trump asked whether Christie was in the room, but Christie didn't appear and later balked when asked about staying at a Trump facility.