Manzur Surge Challenges Pappas in New Hampshire Senate Primary

A late-stage insurgent campaign by medical scientist Karishma Manzur is rattling New Hampshire’s Democratic Senate primary, threatening the once-secure path of U.S. Representative Chris Pappas. As the November general election approaches, the moderate incumbent finds his comfortable lead eroding under pressure from a progressive challenger focused on party ideology.

Editorial·September 8, 2026·reads: 1,965

Manzur Surge Challenges Pappas in New Hampshire Senate Primary

Pappas has relied on a formidable war chest and a long list of establishment endorsements to define his candidacy. Yet, recent polling reveals a shifting landscape, with Manzur—a member of the Democratic Socialists of America—successfully capitalizing on voter dissatisfaction. Her campaign has zeroed in on Pappas’s alignment with AIPAC, a strategy that has resonated with the progressive base despite a massive fundraising disadvantage.

The winner of this primary will face Republican candidate John Sununu in a general election that carries significant weight for national political control. This contest now serves as a high-stakes litmus test for the Democratic Party’s internal direction in a state that remains a critical battleground for Senate majority hopes.