Chris Pappas Wins New Hampshire Primary Sets Up Senate Showdown With John Sununu

Chris Pappas Wins New Hampshire Primary Sets Up Senate Showdown With John Sununu

Chris Pappas Scores Decisive Primary Win as New Hampshire Senate Showdown Takes Shape

Democratic Congressman Chris Pappas has emerged from New Hampshire’s Senate primary with a decisive victory over progressive challenger Karishma Manzur, setting up a major November showdown with Republican former Senator John Sununu.

Pappas’ victory gives Democrats a mainstream candidate for an open U.S. Senate seat that could play an important role in determining control of the chamber after the 2026 midterm elections. The contest has already attracted national attention, with both parties preparing for what is expected to be a closely watched and heavily financed campaign.

Pappas Defeats Progressive Challenger

Pappas entered the Democratic primary as the establishment favorite, backed by prominent Democrats including retiring Senator Jeanne Shaheen, Senator Maggie Hassan and former Vice President Kamala Harris.

He ultimately defeated Manzur, a progressive medical scientist and Democratic Socialist who mounted a late challenge to Pappas. The original campaign coverage reported Pappas winning roughly 65% of the vote, while subsequent results placed his final margin in the low 60s.
Manzur’s campaign reflected the growing influence of the Democratic Party’s progressive wing. She campaigned on an aggressive progressive agenda and attempted to capitalize on dissatisfaction with the party establishment.

Pappas, however, successfully presented himself as a pragmatic Democrat with deep roots in New Hampshire politics.

A General Election Battle With John Sununu

Pappas will now face John Sununu, who easily won the Republican Senate primary.

Sununu brings extensive political experience and a powerful family name to the November election. He previously served in both the U.S. House and Senate and is the son of former New Hampshire Governor John H. Sununu and brother of former Governor Chris Sununu.

President Donald Trump also endorsed Sununu during the Republican primary, strengthening his position among GOP voters.

The November matchup therefore presents New Hampshire voters with two well-known candidates representing very different political coalitions.

The Cost of Living Will Be Central

Despite their political differences, both Pappas and Sununu are expected to make affordability and the economy major themes of the general election.

Pappas has repeatedly highlighted concerns about housing, health care, energy costs, groceries, jobs and the broader cost of living. His campaign has argued that New Hampshire families need practical solutions to rising expenses.

Sununu has also emphasized economic issues and affordability, seeking to portray himself as an independent voice for New Hampshire while attacking Pappas over his record in Congress.

That could make economic issues especially important in a state where independent voters can play a decisive role.

Democrats See a Critical Senate Opportunity

The New Hampshire Senate seat is particularly important because Senator Jeanne Shaheen is retiring after three terms.

National Democrats and Republicans view the race as one of the contests that could help determine control of the Senate. Republicans currently hold a narrow majority, meaning Democrats have a difficult path if they want to regain control of the chamber.

Democrats have already demonstrated that they intend to invest heavily in Pappas. The Senate Majority PAC announced a $10 million commitment to support his campaign, highlighting the national importance of the contest.

New Hampshire Could Decide the Senate

New Hampshire has developed a reputation as a competitive political state, making the Pappas-Sununu matchup particularly significant.

Pappas enters the general election with the advantage of having won his Democratic primary decisively and with support from major figures within his party. Sununu counters with strong Republican backing, extensive political experience and significant name recognition.

The result could ultimately come down to voters who are less interested in party labels and more focused on inflation, housing costs, health care, jobs, taxes and the economy.

For Democrats, Pappas represents an opportunity to defend a seat that has been held by their party for years. For Republicans, Sununu represents a chance to break through in a state where the Senate race could become one of their biggest opportunities of the 2026 cycle.

The primary battles are over. Now the real fight begins.

Chris Pappas and John Sununu are headed for a November Senate showdown — and the outcome could have consequences far beyond New Hampshire.

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