Stefany Shaheen maintains a leading position in the September 8 Democratic primary for New Hampshire's 1st Congressional District, driven by strong name recognition as the daughter of retiring U.S. Senator Jeanne Shaheen, prior service on the Portsmouth city council, and a series of high-profile endorsements including from Sen. Mark Kelly and gun violence prevention groups. Recent polling shows her ahead, supported by consistent in-state fundraising and party support in a crowded field, though one late survey indicated a tightening race. Maura Sullivan, a Marine veteran, former Obama administration official, and state party vice chair who previously sought the seat, trails while emphasizing outsider messaging and cost-of-living issues amid active grassroots efforts. State Rep. Heath Howard and selectwoman Carleigh Beriont remain distant, reflecting limited name identification and resource gaps that have kept their shares low in trader assessments of primary dynamics.