Chris Pappas has served as a U.S. Representative since 2018. Prior to that he served as an executive councilor. (His family is also known for their world-famous chicken tenders at the Puritan Backroom Restaurant in Manchester.) In Congress Rep. Pappas is more moderate than many of his Democratic colleagues, and broke with the Democratic majority on bills from the Laken Riley Act to the Middle Class Borrower Protection Act.

Chris Bright is a businessman and U.S. Army veteran who lives in Derry, New Hampshire. He wrote on Facebook, "As a political outsider, small business owner, and combat veteran, I know what it's like to run a budget for a family of five, build a small business from scratch into a national company that was recognized as one of the fastest growing companies in the country, and deploy in defense of my country and our ideals. I'll take that real life experience to Washington where it is so sorely needed."

Hollie Noveletsky is a business owner and former U.S. Army reservist. Her website states, "Hollie Noveletsky is scrappy, adventurous, and decisive – she doesn’t wait for the perfect plan to formulate, she jumps in with two feet to a challenge, figures out where she lands, and starts swimming from there." She announced her campaign in October 2023.

Former executive councilor Russell Prescott jumped into the Republican congressional primary in July 2023, and he has been building a base of support ever since. In his campaign announcement he wrote, "Our state’s leadership in Congress has forgotten the independent 'Live Free or Die' values we pride ourselves on in New Hampshire. We need a fresh voice who has the business and elected experience to change the status quo."

Maggie Goodlander is an attorney with extensive federal government experience, from working as a speech writer for the late Sen. Joe Lieberman to serving as Deputy Assistant Attorney General in the U.S. Department of Justice. She is also married to Jake Sullivan, President Biden's National Security Advisor. Goodlander lives in New Hampshire's 1st Congressional District, but that does not bar her from running in the 2nd District.

Colin Van Ostern is a former executive councilor and candidate for governor. He was the first Democrat to jump into the District 2 race after Rep. Kuster said she would not seek reelection. In his campaign announcement Van Ostern emphasized the threats to democracy, called for a national law protecting reproductive rights, and promised to "always look for common ground."

Andru Volinsky is a former executive councilor and gubernatorial candidate. He is currently fighting to reform the state's school funding system through the courts. Volinsky once had the endorsement of Bernie Sanders, and many political insiders believe he would be a strong congressional candidate. Volinsky has not said if he will run or not in 2024.

Becky Whitley is a lawyer and a progressive leader in the state Senate. She successfully passed bills to expand legal protections for parents and young children. When she announced her campaign on Facebook she posted, "They say when you want something done right, ask a busy person. I say, ask a busy mom. That’s what I am. I’m running for Congress to cut through the chaos and actually get results for women, children, and hard-working Granite State families."

Vikram Mansharamani is an economist and author who ran in New Hampshire's 2022 U.S. Senate primary. His recent works include Think for Yourself: Restoring Common Sense in an Age of Experts and Artificial Intelligence and Boombustology: Spotting Financial Bubbles Before They Burst. Mansharamani brings a unique, more moderate perspective to politics, which could help him win over voters who supported Democrat Rep. Annie Kuster - but those qualities also might make it difficult to win far-right voters in a Republican primary. Mansharamani announced his campaign in April 2024.

Lily Tang Williams came in third in the 2022 Republican primary in District 2. A year later she announced she would run again in 2024. Williams is a native of China and a fierce critic of the Chinese Communist Party. In her campaign announcement she said, "I fear that the country I love is becoming like the country I left. That is why I am running for Congress."