New Hampshire's open Senate seat — vacated by retiring Democrat Jeanne Shaheen — has become an unexpected pressure test for both parties. Four-term congressman Chris Pappas, the Democratic nominee, leads narrowly in most polls after a September scare that showed him virtually tied with Republican former senator John Sununu. Cook Political Report moved the race from toss-up to lean Democrat in early October, but Pappas is running like a man who remembers how thin New Hampshire margins can be. The architecture of this race is simple: Trump's 32% approval rating in the state is an anchor around every Republican candidate's neck. Pappas's closing argument is almost entirely about tying Sununu to the president, and it's working because the raw material is there. Sununu spent much of the past year aligned with administration positions before pivoting toward independence as election day approached. His campaign ad claiming he has "never met" the president is the kind of move that signals how toxic the association has become. The economic overlay sharpens Democratic advantage. Rising gas and heating-oil prices linked to the Iran conflict hit New Hampshire harder than most states — more than a third of households rely on heating oil. As temperatures drop, that cost becomes visceral. One Republican operative, speaking anonymously, drew a direct parallel to the Iraq war breaking the state GOP's back twenty years ago, noting that Sununu's support for the initial authorization contributed to his 2008 loss. New Hampshire's ticket-splitting tradition complicates any clean narrative. The state's congressional delegation is entirely Democratic while Republicans hold the legislature and governor's mansion. In 2024, voters backed Kamala Harris for president and Republican Kelly Ayotte for governor. A Nashua firefighter supporting both Pappas and Ayotte captures the state's political personality: loyalty flows to individuals and specific policy records, not party brands. What makes this race unusual in a cycle defined by insurgent energy is that both candidates are deeply establishment figures. Pappas has served since 2019 and his family owns the Puritan Backroom restaurant, a fixture of state political life. Sununu comes from a political dynasty — his father and brother Chris both served as governor. Chris Sununu even joked he'd be up by 30 points if voters confused the two. The race has featured substantive policy clashes — Sununu's past support for Social Security privatization, Pappas's vote for the Laken Riley Act — alongside sharper personal attacks, including Pappas referencing Sununu's name appearing in Epstein-related DOJ files. For Democrats trying to gain four seats and reclaim the Senate, losing a seat they already hold is an unacceptable outcome. Pappas has brought in party heavyweights — Mark Kelly, Kamala Harris — for the final stretch. The structural question isn't whether Pappas is a strong candidate or Sununu a weak one. Both are capable. The question is whether Trump's gravitational drag is strong enough to override New Hampshire's instinct for independent judgment. If Pappas wins, he becomes the first openly gay man to serve in the US Senate. If Sununu wins, he becomes the first Republican senator New Hampshire has sent to Washington since 2010. Either outcome is historic. But the deciding factor is almost certainly a man who has lost the state three times and isn't on the ballot.
