Stefany Shaheen maintains a commanding lead in the New Hampshire 1st District House race due to the seat's Democratic lean, her narrow primary victory over Maura Sullivan, and strong establishment support as the daughter of retiring Senator Jeanne Shaheen. The open seat, previously held by Chris Pappas, features a district rated Likely Democratic by forecasters, bolstered by Shaheen's local experience on the Portsmouth city council and her focus on cost-of-living issues like tariffs and housing affordability. Anthony DiLorenzo, the Republican nominee and Trump-endorsed business owner, emphasizes his private-sector record but trails significantly in trader consensus. A late national Republican surge, turnout shifts in Manchester or the Seacoast, or unforeseen campaign developments could narrow the gap before the November 3 general election.