MANCHESTER, N.H. (AP) — Florida Gov. Ron DeSantis suspended his Republican presidential campaign on Sunday, ending his 2024 White House bid just before the New Hampshire primary while endorsing his bitter rival Donald Trump.

The decision leaves Trump and former U.N. Ambassador Nikki Haley as the last major candidates remaining in the race ahead of Tuesday’s New Hampshire primary. This is the scenario Trump’s foes in the GOP have long sought, raising the stakes for this week’s contest as the party’s last chance to stop the former president who has so far dominated the race.

But as some Trump critics cheered, DeSantis nodded toward Trump’s primary dominance — and attacked Haley — in an exit video he posted on social media.

“It’s clear to me that a majority of Republican primary voters want to give Donald Trump another chance,” DeSantis said in the straight-to-camera video, delivered in a cheerful tone.

He continued: “I signed a pledge to support the Republican nominee and I will honor that pledge. He has my endorsement because we can’t go back to the old Republican guard of yesteryear, a repackaged form of warmed-over corporatism that Nikki Haley represents.”

Haley spoke at a campaigning stop in Seabrook, New Hampshire, just as DeSantis announced his decision.

“He ran a great race, he’s been a good governor, and we wish him well,” she told a room packed with supporters and media. “Having said that, it’s now one fella and one lady left.“

DeSantis' decision, while perhaps not surprising given his 30-point blowout loss last week in Iowa, marks the end of an extraordinary decline for a high-profile governor once thought to be a legitimate threat to Trump’s supremacy in the Republican Party. After months of contentious exchanges, Trump struck a more conciliatory tone late Sunday during a rally in Rochester, New Hampshire, calling DeSantis a “really terrific person.”

“I also look forward to working with Ron” to win the general election, Trump said.

His record wasn't enough to overcome Trump

DeSantis entered the 2024 presidential contest with major advantages in his quest to take on Trump, and early primary polls suggested DeSantis was in a strong position to do just that. He and his allies amassed a political fortune well in excess of $130 million, and he boasted a significant legislative record on issues important to many conservatives, like abortion and the teaching of race and gender issues in schools.

Such advantages did not survive the reality of presidential politics in 2024. From a high-profile announcement that was plagued by technical glitches to constant upheavals to his staff and campaign strategy, DeSantis struggled to find his footing in the primary. He lost the Iowa caucuses — which he had vowed to win — by 30 percentage points to Trump.

His departure was days in the making

DeSantis’ allies said that private discussions began shortly after Iowa to decide how to bow out of the race gracefully.

The Florida governor notified top donors and supporters of his decision through a series of phone conversations and text messages between senior campaign officials to top donors and supporters on Sunday afternoon, according to two people who received such communications. They spoke on the condition of anonymity to disclose the private conversations.

DeSantis had returned to Florida by then after a roller-coaster weekend that included stops in South Carolina ahead of an event in New Hampshire Sunday evening that was ultimately canceled. The campaign also canceled a series of national television appearances earlier in the day, blaming the cancelation on a miscommunication with DeSantis’ super PAC.

DeSantis was physically worn after spending weeks on the campaign with little, if any, time off, even as he stormed across frigid Iowa and New Hampshire, often without a winter coat.

A bitter rivalry comes to a meek end

He ultimately decided that he needed to endorse Trump given his popularity in the party despite the deeply personal feud between them.

“While I’ve had disagreements with Donald Trump, such as on the coronavirus pandemic and his elevation of Anthony Fauci, Trump is superior to the current incumbent, Joe Biden. That is clear," said DeSantis, who is in his second and final term as Florida’s governor, which ends in January 2027.

The endorsement was a stunning tail-between-his-legs moment for DeSantis, whom Trump has mercilessly and relentlessly taunted in deeply personal terms for the better part of a year now.

For Trump, whose team includes many former DeSantis staffers, the attacks have often felt more like sport than political strategy. Trump and his aides have blasted the governor as disloyal for running in the first place, mocked his eating habits and his personality, and accused him of wearing high heels to boost his height.

DeSantis' team joined Trump in attacking Haley as news of his departure rippled across the political landscape. Some doubt Haley, who was seen as splitting Republican votes and preventing a head-to-head matchup between Trump, would benefit from DeSantis’ decision.

“She will not be the nominee,” key DeSantis supporter Rep. Chip Roy, R-Texas, told AP. “She will not be the president of the United States.”

Trump had already shifted his focus to Haley in recent weeks, but minutes after DeSantis' announcement, the former president's campaign released a new memo highlighting the pressure on Haley to win New Hampshire.

“Now that we are a mere 48 hours from the primary, the tone has shifted mightily. We see it, you see it, but make no mistake, if Nikki Haley loses in New Hampshire — there are only two options,” wrote senior advisers Chris LaCivita and Susie Wiles.

“Option A: Nikki Haley drops out, unites behind President Trump, and commits to defeating Joe Biden," they wrote. “Option B: Nikki Haley prepares to be absolutely DEMOLISHED and EMBARRASSED in her home state of South Carolina," which votes on Feb. 24.

“Now, for some important advice," they continued. “Choose wisely.”

Trump himself addressed DeSantis' departure shortly after it was announced during a stop at Manchester campaign headquarters, according to a video shared by his staff.

“We just got some word that one of our opponents, very capable person, is dropping out of the race — Ron DeSantis. And Ron is dropping out and, in doing so, he endorsed us,” Trump said to cheers, before a “Trump!” chant broke out in the room of volunteers.

Asked if he would be using the nickname “Ron DeSanctimonious”: “I said that name is officially retired,” he said to loud cheers.

At roughly the same time not far away, DeSantis' dejected supporters gathered privately in the Manchester restaurant where he had been scheduled to speak.

Rep. James Spillane, of Deerfield, said he had initially backed Trump, switched to DeSantis and will now vote for Trump.

“I had a suspicion this morning, and I had talked to some friends of mine saying the way I was hearing things shake out, I thought this was going to happen, and I was right," he said. "Unfortunately, DeSantis is not going to be able to make it forward. However, in the future, hopefully we can have a viable way forward in 2028.”

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Associated Press writers Lisa Mascaro in Washington; Jill Colvin and Michelle L. Price in Manchester, New Hampshire; and Meg Kinnard in Columbia, South Carolina, contributed to this report.

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