As far as endorsements go, this is one of the most high-profile from a former candidate so far in the cycle. We’ve seen Bobby Jindal endorse Rubio, and Rick Perry endorse Cruz, but this is the first major former candidate for Trump, and it came at a good time. Waiting on the yet-to-endorse list is Jeb Bush, though I suspect he’s holding off until such time as to have maximum impact for the candidate of his choosing.

Report from the New York Times:

Gov. Chris Christie of New Jersey endorsed Donald J. Trump on Friday, a major turn in a wild race and one that gives the New York businessman a major boost as he heads into the pivotal “Super Tuesday” contests.

Mr. Christie was a candidate for president himself until he came in sixth place in New Hampshire’s primary. Seeing his political career facing an abrupt conclusion after his failed presidential campaign, he expressed his anger Friday at Senator Marco Rubio, who he was said to be upset with, blaming the “super PAC” backing the Florida senator for halting his momentum in New Hampshire with a string of slash-and-burn ads.

Here is video of the joint press conference with Trump and Christie:

Also of note, Wisconsin Governor Scott Walker has not endorsed anyone yet, though reports indicate that Rubio asked for his endorsement back in November, but didn’t get it.