Despite claims made by former President Donald Trump, Democrats are not allowed to vote in the Republican primary in New Hampshire. New Hampshire has a closed primary system, meaning that voters can only participate in the primary of their registered party or as undeclared. The deadline to change party affiliation was in October 2023, so Democrats cannot vote in the Republican primary. This misinformation spread on social media, but it has been debunked by the New Hampshire Secretary of State's office. Registered Democrats can only vote in the Democratic primary, while Republicans can only vote in the Republican primary. Undeclared voters have the option to choose either party's ballot when they go to vote. Trump's claim is false, and the Secretary of State's website confirms the rules regarding primary voting. Despite these false claims, New Hampshire residents turned out to vote in the state's presidential primary. Former South Carolina Gov. Nikki Haley was Trump's sole opponent, and Trump was leading in the polls by 22 points.