New Hampshire's Senate race marks the first open seat contest in sixteen years
In short: As incumbent Jeanne Shaheen steps down, the 2026 New Hampshire Senate election features a high-stakes rematch between Democrat Chris Pappas and Republican John Sununu. With the state's federal delegation entirely Democratic since 2017, this contest tests whether Republicans can finally break their long-standing losing streak in Granite State Senate races.
The upcoming election on November 3, 2026, represents a significant shift in New Hampshire politics. For the first time since 2010, voters will decide an open Senate seat, as three-term incumbent Jeanne Shaheen has declined to seek reelection. Shaheen, who first secured the seat in 2008 by defeating John Sununu, has held it through subsequent victories in 2014 and 2020. Her departure leaves a vacancy that both major parties are eager to fill.
The primary elections held on September 8 solidified the field. Chris Pappas, a U.S. representative, secured the Democratic nomination with 65% of the vote, overcoming challenger Karishma Manzur. On the Republican side, former senator John Sununu—who previously held this seat from 2003 to 2009—clinched the nomination with 68.5% of the vote, defeating former Massachusetts senator Scott Brown. This sets the stage for a dramatic return to the ballot for Sununu, who famously lost his seat to Shaheen in the 2008 election.
The political landscape in New Hampshire remains complex. While the state is often viewed as slightly to moderately blue at the federal level—evidenced by Kamala Harris winning the state by roughly 3 percentage points in 2024—the local power structure tells a different story. Republicans currently maintain control over the governorship, both chambers of the state legislature, and a majority on the executive council. Despite this local dominance, the party has struggled to secure a U.S. Senate victory in the state since 2010. Whether the 2026 race will finally end this dry spell remains the central question for observers of New Hampshire's shifting political identity.
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- Summary by Intellect · source: 2026 United States Senate election in New Hampshire
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