Stefany Shaheen leads the New Hampshire 1st Congressional District Democratic primary with trader consensus at 63 percent, reflecting her strong name recognition as the daughter of retiring U.S. Senator Jeanne Shaheen, prior service on the Portsmouth city council, and a series of local mayoral and labor endorsements secured in recent weeks. Candidate forums held in late May underscored shared Democratic priorities on healthcare, housing, and opposition to federal policy shifts, while Shaheen's campaign has maintained a fundraising edge and broad institutional support in the open-seat contest. Maura Sullivan, a Marine veteran and former Obama administration official with prior congressional experience, trails at 32.5 percent amid competitive resources but narrower visibility. Lesser-known candidates Carleigh Beriont and Heath Howard remain at single digits, limited by minimal recent momentum or party backing ahead of the September 8 primary.