Chris Pappas and John Sununu Win New Hampshire Senate Primaries, Setting Up High-Stakes Race

New Hampshire's Senate race began attracting national attention when Senator Jeanne Shaheen announced she would not seek reelection. Her decision created a rare open seat in a state often seen as politically competitive.

Both major parties quickly identified the seat as a top priority. Republicans and Democrats saw an opportunity to either flip or defend a crucial spot in the Senate, raising the stakes for the primaries.

By early September, the primary campaigns had intensified. On September 8, voters in New Hampshire went to the polls to select their party nominees for the Senate seat. The Democratic field featured Chris Pappas, a moderate with four House terms, facing off against progressive and centrist challengers. On the Republican side, former senators John Sununu and Scott Brown competed for the nomination.

Polling and analysis leading up to the vote indicated a competitive race, with concerns among Democrats about maintaining the seat. According to The Hill, the contest was tightening, reflecting wider national attention on the outcome.

Live reporting during primary night highlighted Pappas and Sununu as frontrunners in their respective races. Both ultimately secured their party's nominations. Pappas defeated his progressive rivals, while Sununu emerged ahead in a crowded Republican field, according to NBC News and CBS Top Stories.

With the primary results confirmed on September 9, the stage was set for a November showdown between Pappas and Sununu. Media outlets emphasized the significance of the race for both parties' strategies in the midterm elections.

Chris Pappas and John Sununu are now the official Democratic and Republican candidates for New Hampshire's open Senate seat. Both campaigns have begun shifting their focus to the general election, which is expected to be closely contested.

The outcome of this race could influence the balance of power in the Senate, making it one of the most closely watched contests of the 2026 midterms.

All eyes will be on New Hampshire as the general election approaches. Both parties are expected to pour significant resources into the race, and with polls suggesting many undecided voters, the result remains uncertain. Voter turnout, campaign messaging, and national political trends will all play major roles in determining who succeeds Jeanne Shaheen in the Senate.