Two political veterans, John E. Sununu and Scott Brown, headline an eight-candidate field competing for the Republican nomination for U.S. Senate in New Hampshire. The primary contest will determine who faces the Democratic nominee in November to succeed retiring Democratic Senator Jeanne Shaheen. Bucking nationwide trends where primary electorates have routinely rejected political insiders in favor of anti-establishment insurgents, Granite State conservatives appear comfortable selecting a familiar political figure. This dynamic creates a distinctive political atmosphere in New Hampshire, where primary voters prioritize past legislative experience and moderate sensibilities over populist outrage or recent political newcomer status.
Nationwide, twenty-seven former members of Congress attempted to return to Capitol Hill during the current election cycle, yet only nine successfully advanced beyond their primary hurdles. In New Hampshire, both Sununu, who turns 62 this week, and Brown, who turns 67, represent an era of Republican governance that predates the modern political realignment. While Democratic primaries across the country—and within New Hampshire itself—feature progressive newcomers and younger contenders, the Republican field in the Granite State relies on two seasoned figures whose initial entries into congressional politics occurred decades ago. Voters appear largely content with this back-to-the-future primary approach.
The Dynasty Factor and Name Recognition in Sununu's Campaign
Sununu served three terms in the U.S. House of Representatives and one term in the U.S. Senate before losing his seat to Shaheen in 2008. Absent from public office ballots for eighteen years, Sununu benefits significantly from the strong statewide reputation of his family, particularly his younger brother Chris Sununu, who completed an eight-year tenure as governor last year. This deep political lineage sometimes leads to mistaken identity on the trail, with media outlets, debate moderators, and everyday voters occasionally confusing the candidate with his brother or father. Despite these occasional mix-ups, Sununu highlights his personal history of legislative independence and fiscal conservatism as his primary assets.
Supporters like Paul Martino, a 57-year-old resident of North Hampton, express confidence in Sununu's pragmatic style, praising his intellect, civic dedication, and willingness to seek common ground over partisan rhetoric. While some voters at campaign gatherings in places like Berlin mistakenly credit him with recent state gubernatorial achievements, Sununu insists that his campaign remains grounded in his own legislative record. He argues that his platform reflects the traditional Granite State mindset of individual liberty and fiscal discipline, positioning himself as a candidate ready to serve without being beholden to Washington leadership or future reelection anxieties.
Scott Brown's Grassroots Pitch and Independent Campaign
Competing against Sununu is former Senator Scott Brown, who captured national attention by winning a high-profile 2009 special election in Massachusetts following the passing of Senator Ted Kennedy. After losing his Massachusetts seat in 2012, Brown relocated to New Hampshire, mounting an unsuccessful 2014 Senate campaign against Shaheen and later serving as U.S. Ambassador to New Zealand and Samoa during the Trump administration. Trailing Sununu in public polling and campaign contributions, Brown emphasizes his work ethic and grandfatherly perspective, arguing that late-deciding voters will ultimately favor his tireless retail campaigning and direct engagement at local American Legion halls and community venues.
Brown frames his candidacy as an unencumbered alternative, explicitly critiquing Sununu for relying heavily on family name recognition. Noting the shift in Congressional dynamics toward rigid partisan loyalty, Brown recalls his membership in bipartisan groups like the Problem Solvers Caucus. He maintains that his status as a political freelancer allows him to evaluate legislation independently based on national debt impact and state benefits, rather than obeying party mandates. Voters such as 89-year-old Ed Gleason of Pelham have embraced Brown's pitch, citing his demonstrated interest in constituent service over narrow party loyalty as a decisive factor in their support.
Donald Trump's Limited Influence on the Republican Primary
In sharp contrast to heavily contested Republican primaries across the nation, Donald Trump's involvement has remained relatively subdued in New Hampshire's Senate contest. Trump endorsed Sununu in February 2026, despite Sununu having openly criticized the former president during the 2024 primary cycle, and despite Brown's prior diplomatic service in the Trump administration. Surprisingly, Brown opted against attacking Sununu from the right or framing the primary as a test of loyalty to Trump's agenda, a decision political observers attribute to Brown's alignment with an earlier era of pragmatic Republican politics rather than modern populist campaign tactics.
University of New Hampshire political science professor Dante Scala observed that the lack of an aggressive battle over presidential loyalty highlights the unique character of both contenders, who developed their political identities well before the modern populist era. While Sununu secured Trump's backing early, he has maintained a comfortable distance from national political infighting, reiterating that he will not litigate two decades of political history. Both candidates insist that their primary loyalty rests squarely with New Hampshire voters rather than national party leaders, creating a contest defined more by personal trust and established records than nationalized ideological warfare.
Stark Party Contrasts Ahead of the November Election
The outcome of Tuesday's Republican primary will establish a distinct contrast with the Democratic side of the ballot. In the Democratic primary, voters are navigating their own debate between established party figures and progressive voices seeking systemic reform. Four-term U.S. Representative Chris Pappas, aged 46, entered the race with significant fundraising support and high-profile backing from figures like former Vice President Kamala Harris. However, he faces a strong challenge from Karishma Manzur, a 52-year-old research scientist holding a doctorate in biochemistry and molecular biology, who has run a grass-roots democratic socialist campaign focused on anti-corruption reforms and campaign finance transparency.
With only eight weeks separating the primary election from the November general election, the eventual Republican nominee faces a challenging national political landscape. Fluctuating presidential approval ratings, broader national economic conditions, and partisan turnout dynamics will test whether New Hampshire's distinct preference for veteran leadership can successfully deliver a Senate seat for the GOP. Regardless of whether Republican primary voters ultimately select Sununu or Brown on Tuesday, the winning nominee will enter the fall campaign relying on established name recognition to persuade a moderate Granite State electorate that historically values pragmatic, independent-minded legislative representation over rigid hyper-partisan posturing.
