New Hampshire House of Representatives seat · lines in effect since 2022

New Hampshire House of Representatives: State House District Merrimack 21

A district of about 3,800 people, 48% of adults with a bachelor's degree. It votes D+30.6 relative to the nation for president.

Where it sits among all 164 seats

Every New Hampshire House of Representatives seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.

D+30.623rd most
Democratic
Most DemocraticMost Republican83rd seat · the majority lineDistrict 621

Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Every race on these lines

Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.

2020202220242026
U.S. SenateD+48.8No raceNo raceNo race
GovernorD+5.6No raceNo raceNo race
New Hampshire House of RepresentativesNo raceD+41.5D+34.2D+51.2

Outlined: the race for this seat itselfBlank: no race that year

Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 PM ET

Who lives here, compared

Grey bars show the spread of all 164 seats. Small marks are other seats in New Hampshire. The black marker is District 621.

Adults with a bachelor's degree48% 73rd pct · 43rd of 159 in NH

Higher than 73% of seats.

White adults without a degree49% 35th pct · 104th of 159 in NH

Lower than 65% of seats.

Hispanic residents2% 38th pct · 99th of 159 in NH

Lower than 62% of seats.

Black residents0% 32nd pct · 108th of 159 in NH

Lower than 68% of seats.

Asian residents3% 80th pct · 32nd of 159 in NH

Higher than 80% of seats.

People per square mile962 78th pct · 35th of 159 in NH

Denser than 78% of seats.

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET

Who has held it

These lines took effect in 2022.

  1. Timothy Soucy (D)
    2023– · Won 2022 by 41.5, 2024 by 34.2, 2026 by 51.2

Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)