While the overall result has differed, the Vermont map below showcases a similar trend to Massachusetts. As Nathaniel pointed out, Boston and its well-to-do suburbs leaned towards Haley. In Vermont, Haley's strongest results came in areas just across the New Hampshire border from Dartmouth College and in the stretch of land between Montpelier and Burlington, which benefit economically from those population centers and a few prominent ski resorts.

—Amina Brown, 538

In 2022, our analysis showed that just 48 percent of Republican women in open primaries endorsed by VIEWPAC (a PAC dedicated to electing more women) won. As we observed at the time, VIEWPAC was willing to endorse candidates running against Trump endorsees, which was a bold, but losing, strategy in 2022. Tonight, VIEWPAC candidates in open primaries are not having a lot of success. As I already mentioned, in Alabama's 2nd District, Caroleene Dobson trails Dick Brewbaker. And in Texas's 26th District, another endorsee, Luisa del Rosa, a small business owner, is in a distant fourth place behind a Trump endorsee, Brandon Gill, with 88 percent of the expected votes in. (Gill has also been endorsed by Club for Growth.) But in Texas's 34th, the race has been called for their endorsee, Maya Flores ... who is also endorsed by Trump.

—Meredith Conroy, 538 contributor

Nikki Haley's delegate count from Vermont hinges on whether she clears the 50 percent threshold. And right now, she's incredibly close to it. With 68,420 votes cast, Haley has 34,215, which is 4 more votes than the 50 percent plus 1 she needs to sweep the state's delegates. When I simulate 100,000 primaries with that number of total votes and an even 50-50 split, I get a result that's within that tight margin only 3 percent of the time.

—Dan Hopkins, 538 contributor

Polls have closed in California, and ABC News projects that Trump will win the Golden State. He should easily clear 50 percent and claim all of the state's 169 delegates.

—Geoffrey Skelley, 538

Haley took the stage in a bright red dress and in front of a row of American flags just after 10 a.m. from South Carolina, and announced she was suspending her presidential campaign. She began with a retrospective of the start of her campaign, and reiterated her conservative principles, including a low national debt, a small federal government and the need to promote democracy worldwide by standing by America's allies. With that, the final Trump challenger is out of the race, and Trump is the presumptive nominee, a fact Haley acknowledged.

Like most major candidates who ran for the Republican nomination, other than Trump, Haley had previously signed the RNC's pledge to support the eventual nominee, but she's distanced herself from that pledge a bit recently. Haley didn't endorse Trump this morning, but she did congratulate him, while slightly criticizing the way that he's run his campaign. "We must turn away from the darkness of hatred and division," she said. She went on to say that Trump needed to bring people into his cause, saying, "It is now up to Donald Trump to earn the vote of those in our party and beyond it." Haley has noted in previous speeches that she's captured a sizable portion of the vote in some states, even winning Washington, D.C., and Vermont, signaling that some Republican voters are dissatisfied with the former president as a choice for the future.

In the end, as Meredith noted, she made a somewhat rare reference to the historic nature of her campaign. She's the first Republican woman win any state's nominating contest, and she noted that her mother, a first-generation immigrant, had gotten to vote for her for president in South Carolina. She directed her final lines, quoting from the Book of Joshua, to women and girls who had watched her campaign.

—Monica Potts, 538