John H. Sununu

New Hampshire held primary elections Tuesday to pick nominees for Congress, governor and the state Legislature, with Sen. Jeanne Shaheen's retirement reshaping the ballot. Rep. Chris Pappas led a five-way Democratic Senate field that included progressive challenger Karishma Manzur, a research scientist and democratic socialist whose late surge, fueled by criticism of Pappas' pro-Israel donor support and his "present" vote on restricting arms sales to Israel, narrowed his once-commanding lead despite his large fundraising advantage and Shaheen's endorsement. On the Republican side, John Sununu, endorsed by President Trump over rival Scott Brown, held a wide edge among eight candidates; both Sununu and Brown are former senators previously defeated by Shaheen. The seat is one of a handful nationally that could help decide Senate control, with Democrats needing a net gain of four seats.

Pappas' departure from the 1st District opened a crowded race, with Stefany Shaheen (Jeanne Shaheen's daughter) and Maura Sullivan leading a nine-person Democratic field; Republicans chose among five candidates including Trump-endorsed businessman Anthony DiLorenzo and repeat candidate Hollie Noveletsky. In the 2nd District, Democratic Rep. Maggie Goodlander faced a primary challenge from state legislator Paige Beauchemin, while Republicans chose from candidates including repeat nominee Lily Tang Williams. Gov. Kelly Ayotte easily advanced toward a second term against two Republican rivals, favored against unopposed Democrat Cinde Warmington. Winners have eight weeks to campaign before the November 3 general election, as New Hampshire shifts future primaries to June starting in 2026.

New Hampshire Republicans voted Tuesday in an eight-person Senate primary dominated by two former officeholders: ex-Sen. John Sununu and ex-Sen. Scott Brown, both making comeback bids decades after their prior tenures. Sununu, who last appeared on a ballot 18 years ago, benefits from voter recognition of his younger brother Chris, the recent New Hampshire governor, and led in polls and fundraising after securing President Trump's endorsement despite past criticism of him. Brown, a former Massachusetts senator and Trump's onetime ambassador to New Zealand and Samoa, trailed but argued his independence from the party establishment and lack of major endorsements made him a stronger general-election candidate. Notably, Trump's endorsement played a smaller role than in many other GOP primaries this cycle.

The winner faces the Democratic primary victor, a contest between U.S. Rep. Chris Pappas, backed by party leadership, and progressive challenger Karishma Manzur. The general election, replacing retiring Sen. Jeanne Shaheen, is expected to be competitive given national dissatisfaction with the political status quo and could factor into control of the Senate.

Former Massachusetts senator Scott Brown is running a long-shot campaign for the New Hampshire Republican Senate nomination against John E. Sununu, son of former governor John H. Sununu, who has consolidated establishment support including an endorsement from President Trump. Sununu entered the race after his more popular brother, former governor Chris Sununu, declined to run.

Polling shows Sununu with a commanding lead: a University of New Hampshire survey of likely Republican voters put his favorability far ahead of Brown's, with Brown also carrying notably higher unfavorability numbers. RealClearPolitics' polling average shows Sununu leading by a wide margin, and outlets like The Cook Political Report treat Sununu as the de facto nominee against expected Democratic candidate Representative Chris Pappas. Brown, a Trump-appointed former ambassador to New Zealand and the 2010 winner of Ted Kennedy's former Senate seat, argues that "New Hampshire breaks late" and says he remains confident despite the deficit. The primary outcome will determine who faces Pappas in the general election.