99chambers

New Hampshire State Senate seat · lines in effect since 2022

New Hampshire Senate District 20

A district of about 61,000 people, 37% of adults with a bachelor's degree. It votes D+10.4 relative to the nation for president.

Pat Long (D) · since Nov 5, 2024Next election Nov 7, 2028The 2026 race →

Where it sits among all 24 seats

Every New Hampshire State Senate 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+10.48th most
Democratic
Most DemocraticMost Republican13th seat · the majority lineDistrict 20

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+26.7No raceNo raceNo race
GovernorR+29.1No raceNo raceNo race
New Hampshire State SenateNo raceD+15.8D+12.2D+31.4

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 24 seats. Small marks are other seats in New Hampshire. The black marker is District 20.

Adults with a bachelor's degree37% 39th pct · 15th of 24 in NH

Lower than 61% of seats.

White adults without a degree47% 35th pct · 16th of 24 in NH

Lower than 65% of seats.

Hispanic residents12% 91st pct · 3rd of 24 in NH

Higher than 91% of seats.

Black residents6% 100th pct · 1st of 24 in NH

Highest of 24 seats.

Asian residents4% 87th pct · 4th of 24 in NH

Higher than 87% of seats.

People per square mile4,581 100th pct · 1st of 24 in NH

Densest of 24 seats.

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

Seats most like this one

Nearest seats on demographics, density and lean. 2 of the 4 flipped this year.

District 12
45% college gradsD+3.5Flipped DDistrict 18
29% college gradsD+4.8Flipped DDistrict 13
40% college gradsD+15.4Held DDistrict 15
46% college gradsD+26.7Held D

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 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

Who has held it

These lines took effect in 2022.

  1. Democratic (D)
    2027– · Won 2026 by 31.4
  2. Pat Long (D)
    2025–2027 · Won 2024 by 12.2
  3. Lou Dallesandro (D)
    2023–2025 · Won 2022 by 15.8

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