HOUSTON (AP) — The Latest on the race for president ahead of Super Tuesday, the biggest single-day delegate haul of the nomination contests (all times local):

1:02 p.m.

New Jersey Gov. Chris Christie is slamming Florida Sen. Marco Rubio as he endorses Donald Trump for president.

Christie says, “We don’t need any more of these Washington, D.C., acts.”

Christie memorably attacked the freshman senator at the final Republican debate before the New Hampshire primary, tripping up Rubio in a moment that likely contributed to his poor performance in the state’s primary. Christie accused him of parroting the same talking points repeatedly and said a president should be able to think on his feet.

The endorsement from Christie comes the day after Rubio changed tactics in Thursday’s GOP debate and began to attack Trump on a variety of fronts, from his business background to his preparedness to lead the nation. Rubio continued on Friday morning, calling Trump “a con artist” during a round of morning television interviews.

Trump says Rubio is a “desperate guy” and said, “I don’t think he’s of presidential caliber.”

12:50 p.m.

New Jersey Gov. Chris Christie is endorsing Donald Trump in the race for the GOP presidential nomination.

Christie says at a news conference in Fort Worth, Texas, that Trump “will do what needs to be done to protect the American people.”