Stefany Shaheen secured the Democratic nomination for New Hampshire’s open 1st congressional district in the September 8 primary, defeating a crowded field that included Maura Sullivan and Carleigh Beriont. The seat, vacated by Rep. Chris Pappas as he pursues the Senate, sits in a district rated Likely Democratic by forecasters such as the Cook Political Report, with recent University of New Hampshire polling showing Shaheen ahead by double digits. Her established name recognition as the daughter of retiring Sen. Jeanne Shaheen, local government experience, and party endorsements have contributed to trader consensus around her commanding position. Republican nominee Anthony DiLorenzo, a Portsmouth auto dealer endorsed by President Trump, won his primary but faces structural headwinds in a district that has leaned Democratic in recent cycles. Late shifts in turnout, national conditions, or sustained advertising from DiLorenzo’s self-funded campaign represent the main variables that could narrow the gap before the November 3 general election.