TRENTON -- Gov. Chris Christie introduced Republican presidential front-runner Donald Trump as the billionaire businessman prepared to speak to supporters after winning a handful of states on Super Tuesday.

Four days endorsing Trump for the White House, Christie praised the former Atlantic City casino mogul as the "clear winner" on Super Tuesday, the biggest night of the presidential primary process.

"Tonight is the beginning of Donald Trump bringing the Republican party for a big victory in November," the New Jersey governor told Trump supporters in Palm Beach, Fla. "He is bringing the country together."

Christie then stood behind Trump for more than 10 minutes -- with little expression -- as the real estate magnate delivered his speech and took questions from reporters.

Trump has won five states so far on Super Tuesday, when 11 states host the nominating contests for the Republican nomination. Ted Cruz has won two. The other states have not been decided.

Earlier in the night, Democratic presidential front-runner Hillary Clinton suggested in a speech that Trump's catch phrase, "Make America Great Again," is wrong. Instead, she said, the goal should be to make America "whole again."

Trump scoffed.

"Making American great again is going to be so much better than making is whole again," the real estate mogul said during his speech Tuesday.

He also brushed aside criticism that he is too extreme and will hurt the Republican Party's brand.

"I'm a unifier," Trump said.

A little more than two weeks after dropping out of the GOP presidential race, Christie endorsed Trump on Friday and has joined the businessman at campaign events in various states -- including stops in Ohio and Kentucky before the party in Florida.

A number of supporters and Republican pundits have bashed Christie for backing Trump. Others have wondered whether Christie is angling for a spot as Trump's vice president or U.S. attorney general.

During his speech Tuesday, Trump derided politicians for being "all talk, no action."

"Except Chris Christie, of course," he said.

Brent Johnson may be reached at bjohnson@njadvancemedia.com. Follow him on Twitter @johnsb01. Find NJ.com Politics on Facebook.