99chambers

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

New Hampshire House of Representatives: State House District Rockingham 25

A district of about 31,000 people, 39% of adults with a bachelor's degree. It votes R+17.5 relative to the nation for president.

Dennis Mannion (R) · since Nov 8, 2022Joe Sweeney (R) · since Nov 6, 2012John Janigian (R) · since Nov 8, 2016John Sytek (R) · since Nov 3, 1992Lorie Ball (R) · since Nov 8, 2022Sue Vandecasteele (R) · since Nov 3, 2020Tanya Donnelly (R) · since Nov 8, 2022Valerie McDonnell (R) · since Nov 8, 2022Next election Nov 7, 2028The 2026 race →

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.

R+17.5142nd most
Democratic
Most DemocraticMost Republican83rd seat · the majority lineDistrict 725

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.

20222024
New Hampshire House of RepresentativesR+12.0R+15.3

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 725.

Adults with a bachelor's degree39% 49th pct · 82nd of 159 in NH

Lower than 51% of seats.

White adults without a degree54% 46th pct · 86th of 159 in NH

Lower than 54% of seats.

Hispanic residents7% 87th pct · 22nd of 159 in NH

Higher than 87% of seats.

Black residents1% 72nd pct · 45th of 159 in NH

Higher than 72% of seats.

Asian residents3% 82nd pct · 30th of 159 in NH

Higher than 82% of seats.

People per square mile1,196 81st pct · 31st of 159 in NH

Denser than 81% of 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.

District 713
37% college gradsR+10.7SplitDistrict 718
43% college gradsR+14.6Held RDistrict 501
40% college gradsR+24.2Held RDistrict 720
36% college gradsR+16.5Split

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 unopposed
  2. Republican (R)
    2027– · Won 2026 unopposed
  3. Valerie McDonnell (R)
    2023–2027 · Won 2022 by 14.5, 2024 by 18.7
  4. Tanya Donnelly (R)
    2023–2027 · Won 2022 by 16.9, 2024 by 20.4
  5. Susan J. Vandecasteele (R)
    2023–2027 · Won 2022 by 14.2, 2024 by 18.2
  6. Lorie Ball (R)
    2023–2027 · Won 2022 by 19.9, 2024 by 21.3
  7. John Sytek (R)
    2023–2027 · Won 2022 by 16.6, 2024 by 18.9
  8. John Janigian (R)
    2023–2027 · Won 2022 by 16.9, 2024 by 19.5
  9. Joe Sweeney (R)
    2023–2027 · Won 2022 by 17.2, 2024 by 22.0
  10. Fred Doucette (R)
    2023–2027 · Won 2022 by 18.5, 2024 by 21.8

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