Trump opens up double-digit poll lead over Haley in New Hampshire: Live

Campaigning in Rochester, New Hampshire, on Sunday evening, the Republican front-runner offered this frankly very confused account of the First and Second World Wars, adding to the growing concerns about his mental health and exhausting schedule after a string of high-profile gaffes, including blaming Nikki Haley for the Capitol riot on Friday.

He offered another pretty boggling history lesson on Saturday when he cited the bombing of Hiroshima as justification for his call for absolute presidential immunity.

Trump, of course, insists he is quite well and has “aced” every acuity test going.

Here’s Katie Hawkinson on a matter of growing concern.

The big political news of the weekend was the Florida governor dropping out of the race for the GOP nomination and endorsing Trump.

The nominee-presumptive himself has been reasonably gracious about it so far, telling his supporters he is “officially” retiring the “Ron DeSanctimonious” nickname after a year of abusing his rival.

Others have been less kind, however, with plenty of ridicule washing around online.

Clips of DeSantis’s own complaints about Republicans “kissing the ring”, California governor Gavin Newsom predicting his inevitable U-turn and fellow Floridian Matt Gaetz calling him “Diet Trump” have all been widely circulated while others remembered his disastrous Twitter Spaces launch with Elon Musk, his heeled cowboy boots and chocolate pudding fingers.

Here’s Katie Hawkinson and Namita Singh with more on his exit.

Donald Trump has celebrated one-time Republican rival Ron DeSantis as his newest supporter after the Florida governor ended his presidential campaign and endorsed the former president.

For Mr Trump, it has become a familiar ritual to welcome the backing of someone who once tried to take him on.

Nonetheless, it was notable at Sunday’s rally in New Hampshire to see Mr Trump praise Mr DeSantis without calling him “DeSantimonious” or “DeSanctus”, putting an end to perhaps the most bitter rivalry of Republicans’ 2024 campaign.

“I just want to thank Ron and congratulate him on doing a very good job,” Mr Trump said at the outset of his remarks.

“He was very gracious, and he endorsed me. I appreciate that, and I also look forward to working with Ron.”

Mr Trump described Mr DeSantis as “a really terrific person”.

Earlier in the day, Mr DeSantis said via video that he would be ending his campaign two days before New Hampshire’s first-in-the-nation Republican primary.

Ron DeSantis on Sunday reluctantly endorsed Donald Trump in the presidential race.

“It’s clear to me that a majority of Republican primary voters want to give Donald Trump another chance,” Mr DeSantis said, offering matter-of-fact analysis through a forced smile without adding plaudits for Mr Trump.

“I signed a pledge to support the Republican nominee, and I will honour that pledge,” he continued, before adding a dig at the remaining contender, Nikki Haley.

Mr DeSantis described the former UN ambassador and one-time South Carolina governor as a stand-in for “the old Republican guard of yesteryear, a repackaged form of warmed-over corporatism”.

Mr Trump seemed unbothered by Mr DeSantis’ approach, striking a tone of camaraderie as fellow political combatants.

“I will tell you it’s not easy,” Mr Trump said on Sunday night in Rochester.

“They think it’s easy doing this stuff, right? It’s not easy.”

“Fire sale on all Ron DeSantis merch today!” the Democratic West Coast governor said in a post to X shortly after Mr DeSantis announced the end of his campaign.

The political rivals faced off in a December debate, despite Mr Newsom not currently running for president.

Former president Donald Trump seemed to revel in skewering Ron DeSantis throughout the campaign, often making clear it was a personal grudge because he considered the governor’s decision to run in the first place an act of disloyalty.

Mr Trump endorsed Mr DeSantis, then a congressman, in a competitive 2018 Republican primary for Florida governor.

Mr DeSantis went on to win the nomination and the general election. By the time Mr DeSantis won a landslide re-election four years later, though, he was positioning himself for his own White House campaign.

As recently as November, Mr Trump came to Florida and addressed a boisterous crowd at a state Republican meeting standing in front of a sign that read: “Florida is Trump Country.”

That evening, Mr Trump did not mention Mr DeSantis until more than 30 minutes into his speech. Even then, it was to brag about polls showing his advantages over the governor.

“I endorsed him, and he became a rocket ship in 24 hours,” Mr Trump said, claiming that Mr DeSantis had begged for his endorsement.

“Now he’s like a wounded falling bird from the sky.”

Mr Trump never did debate Mr DeSantis or any other 2024 rival. He has said he would not until one proves they are a legitimate threat to him winning the nomination.

Mr DeSantis concentrated his campaign in recent months in Iowa, where he finished in second place in last week’s caucuses – 30 percentage points behind Mr Trump and barely ahead of Ms Haley.

Ms Haley, meanwhile, has long prioritised New Hampshire as a potential springboard ahead of her home-state South Carolina primary next month.

After announcing the end of his presidential bid, the Florida governor announced his endorsement for the former President.

“It’s clear to me a majority of Republican primary voters want to give Donald Trump another chance,” Mr DeSantis said.

Before presidential hopeful Ron DeSantis dropped out of the race on Sunday, polls had him in third place significantly behind Nikki Haley.

Mr Trump was polled at 50 per cent in Tuesday’s primary, with Ms Haley in second place at 39 per cent and Mr DeSantis at 6 per cent, according to a CNN poll released on Sunday.

Ron DeSantis on Sunday reluctantly endorsed Donald Trump in the presidential race.

“It’s clear to me that a majority of Republican primary voters want to give Donald Trump another chance,” Mr DeSantis said, offering matter-of-fact analysis through a forced smile without adding plaudits for Mr Trump.

“I signed a pledge to support the Republican nominee, and I will honour that pledge,” he continued, before adding a dig at the remaining contender, Nikki Haley. Mr DeSantis described the former UN ambassador and one-time South Carolina governor as a stand-in for “the old Republican guard of yesteryear, a repackaged form of warmed-over corporatism”.

Mr Trump seemed unbothered by Mr DeSantis’ approach, striking a tone of camaraderie as fellow political combatants.

“I will tell you it’s not easy,” Mr Trump said on Sunday night in Rochester.

“They think it’s easy doing this stuff, right? It’s not easy.”