Trump warns 2024 election 'our one shot' to save US

Donald Trump has warned that the next election would be America's last chance for salvation as he attempted to revive a faltering third run for the White House in two US states that launched his winning 2016 presidential campaign.

Buffeted by political and legal headwinds, the 76-year-old Republican addressed a few hundred supporters at an intimate rally in South Carolina's capital Columbia on Saturday after speaking to grassroots activists in Salem, New Hampshire.

"The 2024 election is our one shot to save our country and we need a leader who's ready to do that on day one," Trump said from a podium beneath the Statehouse rotunda, flanked by American flags and some of his most loyal political allies.

"Together we will complete the unfinished business of making America great again."

The events were seen as a chance to revitalise a stuttering campaign amid criticism over Trump's failure to make any public appearances since he announced his latest run in November.

But there was no discernible shift in his messaging as he launched into his debunked claims of a stolen 2020 election and reprised his litany of disparaging nicknames for his political rivals.

READ MORE: Majority of Americans don't want either Biden or Trump to seek re-run

Trump 'more committed than ever'

He touched on favourite culture war talking points, railing against critical race theory that he said was being taught in the military as well as gender ideology and windmills that he said were mainly Chinese-made bird-killers.

"There's only one president who has ever challenged the entire establishment in Washington, and with your vote next year, we will do it again," he said seeking to revive his 2016 image as an insurgent outsider.

His most divisive remarks were reserved for the conservative critics he refers to as "RINOs" — Republicans in name only — whom he criticised at both events, arguing in New Hampshire that they were "even more dangerous than Democrats."

During his address to party activists in Salem he had touted his record on law and order, immigration and "rebuilding" the US military as he vowed to save the country from "being destroyed by a selfish, radical, corrupt political establishment."

"I'm more angry now and more committed now than I ever was," Trump said.

"We need a president who's ready to hit the ground running on day one."

READ MORE: Trump receives standing ovation at Republican gathering as rivals lash out

Two-horse race

New Hampshire and South Carolina hold outsize influence as two of the first states in every presidential election year to hold nominating contests.

They cemented Trump's frontrunner status in 2016 after a lukewarm start in Iowa.

But he has reportedly struggled to hold together a support base in South Carolina amid simmering discontent over his endorsements of candidates who lost swing state races in November's midterms.

The nomination could wind up a two-horse race between Trump and Florida Governor Ron DeSantis, who came out on top in a straw poll at the National Pro-Life Summit in Washington just last weekend.

The biggest roadblock on Trump's path to the nomination may end up being his mounting legal woes, with a quasi-independent "special counsel" appointed to look into numerous allegations of misconduct.

"These are radical left-wing prosecutors who are absolutely horrible, horrible people," Trump said in New Hampshire, vowing to investigate the Justice Department if he is reelected.

He is under the spotlight over his handling of classified documents found in an FBI raid of his beachfront mansion in Florida, his role in the 2021 insurrection and, in Georgia, his attempts to overturn his 2020 election defeat.

"We need a fighter who can stand up to the left, who can stand up to the swamp, stand up to the media, stand up to the deep state... to stand up to the globalists and China, and stand up for America," he said in South Carolina.

"And that's what we do, we stand up for America."

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