Former President Donald J. Trump glided to victory in Nevada’s Republican caucuses on Thursday, an end result all however assured as a result of he was the one main candidate on the poll.

The Associated Press declared Mr. Trump the winner shortly after caucus websites closed in Nevada, giving him his fourth straight triumph in a Republican nominating contest that awards delegates this yr.

Even in a marketing campaign wherein Mr. Trump’s dominance has sapped the race of a lot of its drama, his win in Nevada felt notably preordained. His final important G.O.P. rival, Nikki Haley, opted months in the past to skip the caucuses, which had been run by the Nevada Republican Party, and took part as an alternative in a main election on Tuesday required by state legislation.

Ms. Haley nonetheless gained the competition, however its outcomes had been successfully immaterial. The state’s Republican Party, which is led by a detailed Trump ally, determined that it will allocate its presidential delegates based mostly solely on the caucuses, and it forced candidates to choose to participate in one contest or the other.

The symbolic success by Mr. Trump on Tuesday was a part of a technique pushed by his supporters in Nevada, together with its Republican governor, and supplied additional indication of the previous president’s maintain amongst Republicans within the state.

Competitive or not, Mr. Trump’s victory within the caucuses on Thursday stays an important prize that permits him to rack up delegates and declare further momentum as consideration shifts to South Carolina’s main, his subsequent battle with Ms. Haley, on Feb. 24.

It additionally capped off a outstanding day on the path that started with the Supreme Court signaling it will almost certainly rule in Mr. Trump’s favor relating to a problem to maintain him off the poll in Colorado.

Later, his marketing campaign seized on a particular counsel’s report that raised pointed questions on President Biden’s psychological acuity, one thing Mr. Trump and his advisers have been doing for months. And the previous president additionally gained the U.S. Virgin Islands caucuses on Thursday, trouncing Ms. Haley and capturing 73 p.c of the vote.

Mr. Trump and his allies have repeatedly urged Ms. Haley to drop out of the race, citing his rising delegate tally and his runaway lead within the polls as proof that she has no mathematical path to the nomination.

The Trump marketing campaign has argued that Ms. Haley’s insistence on persevering with her marketing campaign is draining time and assets that Republicans might higher deploy towards President Biden, who faces solely nominal opposition within the Democratic main.

On Thursday afternoon, Mr. Trump mentioned at a news convention at Mar-a-Lago, his residence in Florida, that he didn’t perceive why Ms. Haley was nonetheless within the race, including that he believed her candidacy “hurts the party and, in a way, hurts the country.”

Mr. Trump’s marketing campaign occasions in Nevada, whereas few, made clear that his focus was largely on November, when the state is expected to be a competitive battleground.

He used his speeches to attempt to drum up grass-roots help and check his messaging, notably as he tries to chip away at Democrats’ conventional base within the state, notably its union work drive and huge share of Hispanic voters.

In January, he railed towards Mr. Biden’s dealing with of the inflow of migrants on the border, arguing with out offering specifics that the difficulty had disproportionately damage Hispanic Americans. And he repeatedly insisted that Black and Hispanic Americans had fared higher economically beneath his administration.

Mr. Trump will almost certainly have to make positive aspects amongst these teams, or at the least dissuade them from backing Democrats, if he hopes to reverse his losses within the state in 2016 and 2020.

Still, he enjoys broad help amongst Nevada Republicans, handily profitable the state’s caucuses in 2016 and consolidating his power there since then.

Voters at William E. Orr Middle School in southeast Las Vegas mentioned they had been desirous to usher Mr. Trump again into the White House and switch the web page on Mr. Biden, particularly after the particular counsel’s report.

“I feel bad for Biden,” mentioned Susan Sevilleja, 53. “I just really don’t think he knows what’s going on.”

The chairman of Nevada’s Republican Party, Michael J. McDonald, is an ardent ally who was certainly one of six state Republicans indicted within the pretend elector scheme meant to overturn Mr. Biden’s 2020 election victory.

Mr. McDonald additionally repeatedly pushed false claims of voter fraud that stay on the coronary heart of Mr. Trump’s lie that the 2020 election was stolen from him.

Mr. McDonald’s shut ties to Mr. Trump and his stewardship of the social gathering’s caucuses contributed partially to accusations by Ms. Haley’s marketing campaign and others that the competition was arrange in favor of Mr. Trump.

Last yr, the social gathering agreed on new rules for its caucuses that deprived one other Trump rival, Gov. Ron DeSantis of Florida, by effectively preventing the super PAC that backed him from collaborating immediately on Caucus Day.

The change got here months after Mr. McDonald and a bunch of state social gathering officers had been invited to Mar-a-Lago, the place they had been handled to an hourslong meal that concluded with ice cream sundaes.

Kellen Browning contributed reporting.