Sununu and Pappas advance in Senate race that could decide US chamber control

Perspective Analysis

New Hampshire voters chose their Senate nominees on September 8, 2026, setting up a November contest between Democratic Representative Chris Pappas and Republican former Senator John E. Sununu for the seat left open by the retirement of Democratic Senator Jeanne Shaheen. Pappas defeated his progressive primary opponent, Karishma Manzur, while Sununu prevailed over Scott Brown, the former Massachusetts senator and Trump-era ambassador. Both winners were the clear frontrunners entering the day, according to the reporting across the five outlets that covered the results.

The Senate race carries immediate weight because Democrats currently trail in the chamber and would need a net gain of four seats to regain control. Shaheen’s departure removes an incumbent who had held the post since 2009, and New Hampshire has not elected a Republican senator since 2010. The state split its presidential vote in recent cycles, with Kamala Harris carrying it by a narrow margin in 2024 while Republicans maintain control of the state legislature and governor’s office. This pattern makes the November matchup one of the more closely watched Senate contests on the map.

On the Republican side, Sununu secured the nomination after serving one term in the Senate from 2003 to 2009. He defeated Brown, who positioned himself as an outsider challenging what he described as a political dynasty. Sununu received the endorsement of President Donald Trump even though he had written an op-ed during the 2024 presidential cycle calling Trump a “loser” and backing Nikki Haley. Sununu had also criticized aspects of Trump’s record, including tariff policies and the decision to launch military action in Iran without a clear plan for protecting the Strait of Hormuz. At his victory event, Sununu described Pappas as ineffective, partisan, and out of touch with New Hampshire voters. Brown’s campaign did not generate enough support to overcome Sununu’s name recognition and establishment backing within the party.

Pappas, a four-term congressman representing a battleground House district, won the Democratic nomination by defeating Manzur, who ran as a democratic socialist. Manzur pressed Pappas on his voting record in Congress and his ties to the American Israel Public Affairs Committee, arguing that those connections distanced him from progressive priorities. Pappas countered by focusing on affordability, defense of safety-net programs, and his established electoral record in the state. Outside spending reached roughly $4.8 million in support of his primary bid. His victory leaves Democrats with a candidate who has demonstrated strength in competitive districts, though Sununu’s prior Senate experience and family prominence in New Hampshire politics present a direct challenge.

Reporting from outlets outside the United States placed heavier emphasis on the broader implications of the outcome. Al Jazeera noted that Republicans see the seat as an opportunity to gain a foothold in New England, while Democrats view retention as essential to their path back to a Senate majority. The same coverage recorded Manzur’s criticism of Pappas over AIPAC support and framed the general election as a test of whether the party can hold ground in a state that has favored Democrats for federal office in recent cycles. Hoy, drawing on wire reporting, described the contest as a key battle for Senate control and observed that the state’s mix of independent voters and split-ticket history keeps both parties competitive.

CNN’s account stayed closer to the mechanics of the primaries themselves, detailing how Sununu overcame past criticism of Trump to win the endorsement and how Pappas withstood an internal challenge from the left. It also recorded the parallel gubernatorial race, in which Republican Kelly Ayotte secured her party’s nomination while Democrat Cinde Warmington ran unopposed. The piece further noted that Stefany Shaheen, daughter of the retiring senator, won the Democratic nomination for the open House seat Pappas is vacating.

The Guardian centered its coverage on the Trump endorsement of Sununu, highlighting the candidate’s earlier public statements against the president and his subsequent alignment for the primary. It described the general election as one that could prove decisive for Democratic hopes of flipping the chamber and noted Republican concerns that New Hampshire remains a potential sleeper risk despite the party’s state-level strength.

Anadolu Agency limited its report to the basic fact that voters had selected the two Senate nominees who will meet in November, without additional framing around endorsements or policy stakes.

The accounts converge on the identity of the winners and the retirement of Shaheen as the reason for the open seat. They also agree that Sununu secured Trump’s support despite prior differences. No outlet reported contradictory vote outcomes or disputed the sequence of events on primary night. Where the pieces differ is in the weight given to different elements of the same record. CNN and the Guardian both recorded Sununu’s past criticism of Trump; Al Jazeera and Hoy foregrounded the Senate majority arithmetic; Anadolu stayed with the narrowest possible description of the ballot results.

A reader limited to any single account would therefore miss either the state-level mechanics that produced these particular candidates or the arithmetic of chamber control that makes the November race consequential for legislation on trade, alliances, and foreign assistance. The convergence across the five pieces on the core facts—Pappas and Sununu as nominees, Shaheen’s retirement, the four-seat threshold for Democrats—establishes a reliable baseline. The variation in emphasis reflects the different audiences each outlet serves rather than any disagreement over what occurred on September 8.