Donald Trump appeared to mix up the names of two candidates running for Senate in Ohio in the GOP primary on May 3.

The names of Josh Mandel and JD Vance were combined by Trump.

We have endorsed Dr. Oz. We endorsed JP, right? He is doing great. They are all doing well, Trump said.

—Acyn (@Acyn) May 1, 2022

Trump appeared with Vance at a rally in Delaware, Ohio, last weekend.

During the rally, Trump acknowledged that he had said bad things about him in the past, but said he had put that aside.

He said some bad things about me. He did. He did. You know what? Every one of them did. If I went by that standard, I don't think I would have endorsed anyone in the country.

He said that Vance had the best chance of winning the Senate seat.

The endorsement of Trump by Vance was controversial. The author and venture capitalist, Hillbilly Elegy, was a vocal critic of Trump before he became a fierce supporter.

Dozens of GOP officials in Ohio wrote a letter to Trump, urging him not to support Vance. They wrote that endorsing him would cut against your support and legacy in Ohio and would confuse or upset voters.

On the following day, Trump endorsed him.

Trump said in a statement that J.D. Vance is his best chance for victory in the race.

Mandel, a former Ohio State Treasurer, was vying for an endorsement from Trump, even putting out ads that described himself as pro-God, pro-gun, pro- Trump.

Mandel's backers have also gone after Vance. The Club for Growth, a political action committee that supports Mandel, has put out ads attacking the past comments of a man.