evidence: Nikki Haley suspended her presidential campaign on Wednesday after being soundly defeated across the country on Super Tuesday, leaving Donald Trump as the last remaining major candidate for the 2024 Republican nomination. [...] Haley's defeat marks a painful, if predictable, blow to those voters, donors and Republican Party officials who opposed Trump and his fiery brand of "Make America Great Again" politics. She was especially popular among moderates and college-educated voters, constituencies that will likely play a pivotal role in the general election. It's unclear whether Trump, who recently declared that Haley donors would be permanently banned from his movement, can ultimately unify a deeply divided party. [...] Swiftly following her speech Wednesday, Trump's campaign in a fundraising email falsely claimed that Haley had endorsed his candidacy and did not immediately respond to a request for comment about the message. Earlier this week, Haley said she no longer feels bound by a pledge that required all GOP contenders to support the party's eventual nominee in order to participate in the primary debates.