MILWAUKEE (AP) — Donald Trump was celebrated Tuesday at the Republican National Convention by former rivals who just months ago leveled harsh critiques about him, a show of unity that contrasts with the divisions increasingly ripping through the Democratic Party.

Nikki Haley, the former U.N. ambassador who was Trump’s final challenger in the GOP primary, directly addressed her supporters after taking the stage to a mix of cheers and boos.

“My message to them is simple: You don’t have to agree with Trump 100% of the time to vote for him,” Haley said.

She was followed by Florida Gov. Ron DeSantis, a onetime Trump ally turned primary rival who has worked to rebuild his relationship with the former president since dropping out of the primary.

“Donald Trump has been demonized. He’s been sued. He’s been prosecuted. And he nearly lost his life,” DeSantis told the crowd. “We cannot let him down. And we cannot let America down.”

Such overtures are typical in political conventions, where the purpose is often to bring a party together after bitter primaries. But the Haley and DeSantis appearances were particularly notable given the personal animosity that defined this year’s GOP contest — much of that being directed by Trump at Haley and DeSantis.

The displays of unity stood in stark contrast to the dynamic facing Democrats, many of whom are increasingly uncertain that President Joe Biden is the right choice to take on Trump in the November election.

DeSantis was once seen as best positioned to challenge Trump’s position at the top of the party. As a presidential candidate, he was slow to criticize Trump directly before eventually accusing him of repeatedly failing to follow through on his promises.

Haley, meanwhile, painted Trump as chaotic and suggested the 78-year-old was too old to serve another term. Unlike DeSantis, she did not immediately endorse Trump after she dropped out, instead waiting a few months to announce he had her vote.

Biden’s campaign resurrected Haley’s criticisms Tuesday. Austin Weatherford, a spokesperson for the campaign, said in a statement, “Ambassador Haley said it best herself: someone who doesn’t respect our military, doesn’t know right from wrong, and ‘surrounds himself in chaos’ can’t be president.”

Immigration was a key theme on Tuesday

Several speakers spotlighted immigration, a key element of former Trump ’s political brand that helped endear him to the GOP base when he began his first campaign in 2015.

Trump has criticized the unprecedented number of migrants entering the country illegally through the U.S. border with Mexico. The numbers of unauthorized crossings have fallen abruptly after Biden issued a rule suspending many asylum claims at the border.

At rallies and other campaign events, Trump has pointed to examples of migrants who committed heinous crimes and has blamed migration for the trafficking of drugs like fentanyl, even though federal data suggests many people smuggling fentanyl across the border are U.S. citizens. He has vowed to carry out the largest deportation operation in U.S. history.

Trump’s anti-immigrant rhetoric has also strayed into talking points not backed by evidence, including unfounded claims that migrants are entering the country to vote in the 2024 election.

Rep. Steve Scalise of Louisiana, the House majority leader, made that statement in his remarks, declaring, “Biden and Harris want illegals to vote now that they’ve opened up the border.”

The convention’s programming has featured people the campaign has referred to as “everyday Americans.” On Tuesday, they included people who had lost loved ones to fentanyl overdoses or in violent crimes linked by authorities to immigrants in the U.S. illegally.

Among the speakers was Michael Morin, whose sister was Rachel Morin, a Maryland woman whom prosecutors say was killed and raped by a fugitive from El Salvador.

“Joe Biden and his designated ‘border czar’ Kamala Harris opened our borders to him and others like him, empowering them to victimize the innocent,” Morin told the audience.

Peer-reviewed academic studies have generally found no link between immigration and violent crime, though conclusions vary based on the data examined.

The recent attempt on Trump’s life lingers over convention

Trump’s survival of an attempted assassination Saturday at a rally in Pennsylvania was on the minds of many inside the hall. One of the delegates in the crowd could be seen with a folded white piece of paper over his ear — an apparent tribute to the bandage Trump wore when he entered the hall Monday to a roaring crowd.

Trump was again wearing a bandage when he arrived Tuesday night, appearing even earlier in the arena than he did the night before. Trump entered a few minutes after his newly chosen running mate, Ohio Sen. JD Vance.

Scalise, who was injured in a politically motivated shooting in 2017 while he was practicing for a charity baseball game, spoke of his own experience when he touched on Trump’s attack.

“While I was fighting for my life, Donald Trump was one of the first to come to console my family at the hospital. That’s the kind of leader he is. Courageous under fire, compassionate towards others,” Scalise said.

In the wake of Saturday’s attempt on Trump’s life, there was a heightened focus on security at the convention, which drew thousands of people to downtown Milwaukee, including a number of high-profile elected officials.

A man armed with an AK-47 pistol and wearing a ski mask was taken into custody Monday, the convention’s first day, near the Fiserv Forum where the convention is being held, a federal law enforcement official said Tuesday. The official was not authorized to publicly discuss details of the ongoing investigation and spoke to The Associated Press on condition of anonymity.

On Tuesday, five Ohio police officers who were in Wisconsin for the convention shot a man who was in a knife fight near the convention, killing him, Milwaukee’s police chief said.

There’s growing anticipation for Trump’s speech

Trump and Vance were expected to appear in the hall each night of the convention. Vance is slated to speak Wednesday and Trump will speak Thursday.

Trump, who has long decried rivals with harsh language and talked about prosecuting opponents if he wins a second term, seemed poised to deliver a more toned-down speech. His eldest son, Donald Trump Jr., said in an Axios interview outside the RNC that he spent three or four hours going through his father’s convention speech with him, “trying to de-escalate some of that rhetoric.”

“I think it lasts,” the younger Trump said of the change in his father’s rhetoric. “There are events that change you for a couple minutes, and there are events that change you permanently.”

But there were also hints in Tuesday’s programming of some of Trump’s old grievances, including several references to Trump’s disproven theories of election fraud. One of the primetime speakers, Madeline Brame, railed against Manhattan District Attorney Alvin Bragg, whose office prosecuted Trump for illegally orchestrating a hush money scheme to influence the 2016 election. That made Trump the first former president convicted of a felony crime.

Brame accused Bragg of having mishandled the cases against the people accused of killing her son. Of Trump, she said, “He’s been a victim of the same corrupt system that I have been and my family has been.”

Then she echoed a version of a line he has delivered at his rallies for years.

“They’re after us,” she said. “He’s just standing in the way.”

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Swenson reported from Minneapolis. Fernando reported from Chicago. Associated Press writers Steve Peoples, Jill Colvin, Meg Kinnard, Farnoush Amiri, Bill Barrow and Thomas Beaumont in Milwaukee and Michael Balsamo in Chicago contributed to this report.

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Follow the AP’s coverage of the 2024 election at https://apnews.com/hub/election-2024.