Maine House of Representatives seat · lines in effect since 2022
Maine House District 129
A district of about 7,000 people, 42% of adults with a bachelor's degree. It votes D+26.9 relative to the nation for president.
Where it sits among all 151 seats
Every Maine 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.
Democratic
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.
| 2022 | |
|---|---|
| Maine House of Representatives | D+35.1 |
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 151 seats. Small marks are other seats in Maine. The black marker is District 129.
Higher than 66% of seats.
Lower than 73% of seats.
Higher than 87% of seats.
Higher than 91% of seats.
Higher than 75% of seats.
Denser than 82% 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 2342% college gradsD+20.6Held DDistrict 131
43% college gradsD+20.3CountingDistrict 128
44% college gradsD+33.5CountingDistrict 130
47% college gradsD+26.9Held 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.
- Marshall F. Archer (D)
2025– · Won 2024 unopposed, 2026 unopposed - Margaret M. Oneil (D)
2023–2025 · Won 2022 by 35.1
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)