(NewsNation) — On Tuesday night, the Republican National Convention heard from a last-minute speaker: Nikki Haley.

The former United Nations ambassador was added to the speaking schedule Sunday. A week before the convention, she released her delegates and encouraged them to vote for Trump.

“I’ll start by making one thing clear: Donald Trump has my strong support, period,” Haley said as the crowd stood up and applauded.

Haley repeatedly claimed during her own 2024 campaign that a vote for Biden was really a vote for Harris, and she reiterated that belief Tuesday.

“After seeing the debate, everyone knows it’s true,” she said, claiming the country would be worse off if Harris were president for “a single day.”

She went on to preach party unity and said that “you don’t have to agree with Trump” entirely to vote for him.

“We should acknowledge that there are some Americans who don’t agree with Donald Trump 100% of the time,” Haley said. “Take it from me. I haven’t always agreed with President Trump. But we agree more often than we disagree.”

Rep. Byron Donalds, R-Fla., praised speeches from Haley and Florida Gov. Ron DeSantis, arguing that they show the GOP “is completely unified.”

“I don’t think we’ve been this way probably in a couple decades, to be honest with you. We’re united behind President Trump,” Donalds said. “In campaigns, we have our differences, it happens. We compete … but at the end of the day, we got to be united and we are tonight, and we’re gonna be that way going into November.”

“The Hill” contributed to this report.