Nikki Haley defeated Donald Trump in the Washington DC Republican primary.
This is her first victory over a former president as she competes for the 2024 Republican presidential nomination.
She lost in her home state of South Carolina. But she is the first woman in U.S. history to win a Republican primary.
However, Trump has a large lead over Haley and is likely to face Joe Biden in the November election.
CBS, the BBC's US partner, will accept all 19 Republican delegates Ms Haley was expected to win in Washington, D.C., bringing her national delegate count to 43, far ahead of Ms Trump's 247. It was reported that there was no.
Haley, a former U.S. ambassador to the United Nations, received 62.9% of the vote, to Trump's 33.2%.
This is seen as a largely symbolic victory, as the capital is a Democratic-leaning area and there are only about 23,000 registered Republicans in the city.
Local party officials said 2,035 Republicans participated in the primary, The Washington Post reported.
“It's no surprise that the Republicans closest to the dysfunction in Washington are rejecting Donald Trump and all of his chaos,” said Olivia Perez-Cubas, a national spokeswoman for Haley's campaign. Ta.
But the Trump campaign quickly denied Haley's victory, calling her the “Queen of the Swamp.”
“Nicki has been roundly rejected across America, but she has just been crowned Queen of the Swamp by lobbyists and Washington D.C. officials seeking to protect the failed status quo. The Swamp has claimed Queenhood.” said Trump campaign spokeswoman Caroline. Levitt said.
Trump has so far dominated every state's primaries and caucuses in the Republican field, with even more delegates on Super Tuesday this week, when voters in 15 states and one U.S. territory nominate their candidates. He is poised to win a seat in the Diet. Today is the biggest day of the nomination contest, with the support of 874 Republican delegates at stake.
Haley has vowed to remain in the race until at least March 5, when thousands of Americans will vote on Super Tuesday.