Stefany Shaheen leads the NH-01 Democratic primary market at 63% trader consensus, driven by her name recognition as the daughter of retiring U.S. Sen. Jeanne Shaheen, multiple local endorsements from mayors and labor groups including Teamsters Local 633, and a fundraising advantage exceeding $1.8 million reported earlier this year. Maura Sullivan follows at 40.5% on the strength of her Marine Corps service, prior 2018 congressional bid in the district, and Obama-era defense experience, though she trails in organizational support. Carleigh Beriont at 9.5% and Heath Howard at 2.2% remain further back with narrower profiles and limited visibility. Late May candidate forums highlighted shared campaign themes around healthcare, affordability, and opposition to federal policy shifts, but produced no major polling shifts or new endorsements ahead of the September 8 primary. The open-seat contest reflects these structural factors in current pricing.