Stefany Shaheen holds a commanding lead in the New Hampshire 1st Congressional District race due to the district’s lean-Democratic rating, her established local profile as a former Portsmouth city councilor and police commission chair, and strong name recognition tied to her mother, retiring Sen. Jeanne Shaheen. She secured the Democratic nomination in a competitive September primary against Maura Sullivan and progressive challengers. Republican nominee Anthony DiLorenzo, a Portsmouth auto dealer endorsed by President Trump, won his primary but trails substantially in available polling. Negative exchanges over family ties, business interests, tariffs, and policy priorities have intensified without materially altering the race’s trajectory. The November 3 general election remains the resolution trigger, though sustained Democratic structural advantages and limited recent shifts make major reversals unlikely absent late developments in turnout or national conditions.