Former New Jersey Gov. Chris Christie’s disapproval of former President Donald Trump is so great that he supposedly now wishes he never supported his bid for president in 2016.

Christie, who was once an ally of Trump, made the confession in a new campaign ad, saying he was “wrong” to have supported Trump.

“Eight years ago when I decided to endorse Donald Trump for president, I did it because he was winning, and I did it because I thought I could make him a better candidate and a better president,” he stated in part.

Christie also tried to discourage voters from Trump, referring to him as an unacceptable choice.

“Anyone who’s behind him should drop out, and we should make our choice: Donald Trump versus Joe Biden. Neither choice is acceptable to me and it shouldn’t be acceptable to you,” he said.

Christie has consistently spoken against Trump’s candidacy, touting himself as the only person bold enough to tell the truth about how dangerous the GOP front runner is. However, the former governor is refusing to do one thing said to have the power to actually stop Trump’s bid – drop out of the race.

Christie has consistently been at the back of the GOP presidential field, with 3.8% support nationally, according to FiveThirtyEight. His support in Iowa is even lesser at 3.7%.

According to some strategists, if Christie drops his bid, he can consolidate the field against stronger candidates like Florida Gov. Ron DeSantis and former South Carolina Gov. Nikki Haley.

However, he believes that idea is outrageous. Speaking on MSNBC’s “Morning Joe,” he said, “Anybody thinks I’m getting out of this race, they’re crazy.”

Addressing the calls for him to quit in an ad from last week, he said, “Some people say I should drop out of this race. Really?”

“The most important characteristic for any candidate running for president of the United States is what’s in here. The most important thing is character,” he said.