Donald Trump is set to be the Republican candidate for president as his last remaining rival Nikki Haley is due to pull out of the race, NBC News reports.

A source familiar with Haley’s plans has confirmed to Sky News’s partner NBC that she will exit the race later this morning.

It means Mr Trump is heading for what is almost certainly going to be a November showdown with the man who beat him in the 2020 election: Democrat Joe Biden.

Haley, a 52-year-old former South Carolina governor, had pitched herself as a solid conservative and a younger alternative to Trump, who is 77.

She had also been seen as the choice for Republicans tired of Trump’s ongoing legal issues – he faces four criminal cases, including over efforts to reverse the 2020 election result and his handling of national security documents.

But Haley failed to reach Republican voters, losing the first five nominating contests and all but one of the primaries on Super Tuesday.

Mr Trump and Mr Biden each won California, Texas, Alabama, Colorado, Maine, Oklahoma, Virginia, North Carolina, Tennessee, Arkansas, Minnesota and Massachusetts.

Mr Biden also won the Democratic primaries in Utah, Vermont and Iowa. The only contest he lost on Tuesday was the Democratic caucus in American Samoa, a tiny US territory in the South Pacific Ocean.

Read more: We’re on course for the oldest presidential race in US history – and one most people don’t want

Haley’s only win of the night came in Vermont – denying Mr Trump a full sweep.

But the former president carried other states that might have been favourable to her such as Virginia, Massachusetts and Maine, which have large swathes of moderate voters like those who have backed her in previous primaries.

Haley was ambassador to the United Nations for almost two years under Trump’s presidency and when she resigned, he called her a “very special” person.

In recent months on the campaign trail, however, he changed his tune.

He used her background as a daughter of Indian immigrants as ammunition for racist attacks, and he amplified false claims about her eligibility for the White House, despite her having been born in South Carolina.

She fought back, describing him as “unhinged”, saying he is too chaotic and divisive to be an effective president, and criticising his admiration for dictators such as Russian President Vladimir Putin.

Read more:
Haley becomes first woman to win a Republican primary
How Trump’s grip on the Republican party is tightening

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Her departure clears Mr Trump to focus solely on his likely rematch in November with Mr Biden.

They and their politics will dominate the next eight months, having dominated the last eight years.

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