- Lead
- 6,201
- Total
- 15,839
- vs nation
- D+40.6
Massachusetts 120th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 8,582
- Total
- 17,155
- vs nation
- D+45.6
- Lead
- 6,692
- Total
- 16,211
- vs nation
- D+39.2
- Lead
- 6,064
- Total
- 15,041
- vs nation
- D+36.5
- Lead
- 6,412
- Total
- 15,032
- vs nation
- D+35.4
- Lead
- 6,201
- Total
- 14,094
- vs nation
- D+46.5
- Lead
- 6,277
- Total
- 12,953
- vs nation
- D+47.9
- Lead
- 6,218
- Total
- 11,835
- vs nation
- D+44.0
Key facts
- 2024 presidential margin
- D+39.2MIT Election Lab
- Population
- 44,9802024 5-year
- Population density
- 4,284 / sq mi2024 5-year · TIGER/Line
- Land area
- 10.5 sq miTIGER/Line
- Median household income
- $84,6042024 5-year
- White (non-Hispanic)
- 31.7%2024 5-year
- Black
- 31.5%2024 5-year
- Hispanic / Latino
- 12.0%2024 5-year
- Peak Democratic margin
- D+65.1 in 1964MIT Election Lab
- Peak Republican margin
- R+29.9 in 1896MIT Election Lab
- Most similar
- 11th Plymouth District, MA · twin score 95.5
presidential history
Party record book
Massachusetts 120th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Lyndon B. Johnson1964
82.5%
6,656 votes · D+65.1 · modeled estimate
Runner-up · Joe Biden, 2020 · 74.3%
Republican
William McKinley1896
62.4%
469 votes · R+29.9 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 59.3%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
12,740votes
74.3% of the vote · D+50.0 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 10,966 votes
Republican
Donald Trump2024
4,610votes
29.1% of the vote · D+39.2 · modeled estimate
Runner-up · Mitt Romney, 2012 · 4,448 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
George McGovern1972
+55.9pts D vs U.S.
Place D+32.7 · U.S. R+23.2 · modeled estimate
Runner-up · Al Gore, 2000 · +47.9 pts
Republican
William McKinley1896
+23.8pts R vs U.S.
Place R+29.9 · U.S. R+6.1 · modeled estimate
Runner-up · Alf Landon, 1936 · +2.0 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Anchored in Plymouth County, this district recorded a 39.2-point Democratic presidential margin in 2024, placing it among the state's most reliably left-leaning legislative seats despite sitting in a county that trends more competitive overall.
Across the recorded series it reached a Democratic high of 65.1 points in 1964 and a Republican high of 29.9 points in 1896. Between 2020 and 2024 the district moved 10.9 points toward the Republican candidate; the 2024 margin was 39.2 points.
A population of 44,980, a 32% non-Hispanic-white share, and a median household income of $84,604 describe the district. The district's voting pattern over the last decade is most similar to that of 11th Plymouth District and 6th Suffolk District.
The state-house districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
District research tools
Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →
Massachusetts 120th State House District. Akashic. https://akashic.app/sld-lower/25120/. Accessed May 20, 2026. License: CC BY 4.0.