Countdown to South Carolina

(NBCNC) New Jersey Governor, Chris Christie, who argues that experience is critical to being president, endorses Donald Trump. Chris Christie went to campaign alongside the first time candidate with just four days until Super Tuesday.

With no warning, Chris Christie and Donald Trump showed up together in Ft. Worth, Texas at a rally for Trump.

"I think that this is the one endorsement that I felt very strongly about and wanted to get," says Trump.

Before Christie dropped out of the race, he battled against Trump. Now, the fight is for Super Tuesday.

"I want Texas to be Trump territory on Tuesday," says Governor Chris Christie.

But for Ted Cruz, winning at home, on Tuesday in Texas, is a must.

Read more: http://nbcnews.to/1oF5ArY