Randall Terry is the running for president under the banner of the Constitution Party, and has filed to appear on the New Hampshire general election ballot. His campaign is focused on pro-life policies. His website states, "Our campaign has 3 Goals to Defend Children, Defeat the Democrat nominee and Destroy the Democrat Party."

In 2021 Joe Biden was the oldest American ever to be sworn in as president, at age 78. From day one of his presidency there was speculation he would step down for a younger Democrat rather than seek reelection. After Democrats outperformed expectations in the midterms, however, Biden supporters gained momentum. In April 2023 Biden announced he would run for reelection as president. He won New Hampshire's Democratic primary despite his name not appearing on the ballot after supporters organized a write-in campaign. President Biden announced he was dropping out of the race in July 2024.

Kamala Harris is the current Vice President of the United States. When President Biden announced he was dropping out of the 2024 race, he threw his support behind Harris. She said in a statement, "I will do everything in my power to unite the Democratic Party—and unite our nation—to defeat Donald Trump and his extreme Project 2025 agenda."

Dean Phillips announced he was challenging president Biden for the Democratic nomination in October 2023. He said, "I think President Biden has done a spectacular job for our country. But it's not about the past. This is an election about the future. I will not sit still I will not be quiet in the face of numbers that are so clearly saying that we're going to be facing an emergency next November." Phillips has served three terms in the U.S. House of Representatives and is one of the wealthiest members of Congress, thanks to his successful business ventures. Phillips dropped out of the race after Super Tuesday in March 2024.

Williamson has been described as a self-help author, spiritual advisor, and activist. She criticizes Democratic Party leaders for policies that favor wealthy donors over working class voters – including efforts to bump New Hampshire later in the presidential primary calendar. She suspended her campaign in early February, then "un-suspended" her campaign after the Michigan primary on February 27. She acknowledged her slim chances at victory but said, "something so much more important than the horse race is at stake here. And we must respond."

Jill Stein ran for president in 2012 and 2016 as a member of the Green Party. On her 2024 campaign website she writes, "I'm running for President to offer a better choice for the people. Let's put a pro-worker, anti-war, climate emergency agenda front and center in this election and on the ballot across the country."

Robert F. Kennedy, Jr. spent most of his career working as an environmental lawyer. In recent years he has dedicated his energy to anti-vaccine campaigns. After starting his campaign as a Democrat, in October 2023 Kennedy announced an independent/third-party run for president.

Cornel West is an intellectual running for president as an independent. The homepage for his presidential campaign website lists three priorities: “dismantling the empire” (huge cutbacks on military spending and activity), “unleashing democracy” (investing in social programs), and “saving the planet” (including the Green New Deal).

Chase Oliver gained national attention when his U.S. Senate campaign gave him the opportunity to debate Georgia Senator Raphael Warnock. That race ended with a run-off between Warnock and his Republican challenger, which is one reason why Oliver supports ranked-choice voting. He also has a solution to the student debt crisis: make all current loans interest-free and end all future government-guaranteed loans. He secured the Libertarian Party nomination for president in May 2024.

Nikki Haley served as governor of South Carolina and U.S. ambassador to the United Nations under president Trump. Her campaign announcement in February 2023 included a clear jab at both Trump and Biden: “America is not past our prime, it’s just that our politicians are past theirs.” Haley dropped out of the race after Super Tuesday in March 2024.

Shortly after the 2022 midterm election former president Donald Trump announced his third presidential campaign from Florida. Sticking with his previous campaign catchphrase, he said, “Our country was great. Our country is not great anymore.” He is a formidable campaign fundraiser, but not all Republicans are as enchanted with him as they were in the past. Still, he has emerged as the frontrunner, handily winning the New Hampshire Republican primary.