- Lead
- 2,712
- Total
- 11,031
- vs nation
- D+26.1
Massachusetts 86th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 5,719
- Total
- 13,123
- vs nation
- D+39.1
- Lead
- 4,930
- Total
- 12,586
- vs nation
- D+37.1
- Lead
- 3,333
- Total
- 11,956
- vs nation
- D+24.0
- Lead
- 3,609
- Total
- 11,585
- vs nation
- D+23.9
- Lead
- 3,360
- Total
- 11,004
- vs nation
- D+33.0
- Lead
- 3,392
- Total
- 10,263
- vs nation
- D+32.5
- Lead
- 3,748
- Total
- 9,744
- vs nation
- D+29.9
Key facts
- 2024 presidential margin
- D+24.6MIT Election Lab
- Population
- 43,5642024 5-year
- Population density
- 17,426 / sq mi2024 5-year · TIGER/Line
- Land area
- 2.5 sq miTIGER/Line
- Median household income
- $82,4432024 5-year
- White (non-Hispanic)
- 34.2%2024 5-year
- Black
- 13.9%2024 5-year
- Hispanic / Latino
- 27.9%2024 5-year
- Peak Democratic margin
- D+53.7 in 1964MIT Election Lab
- Peak Republican margin
- R+50.5 in 1896MIT Election Lab
- Most similar
- 11th Essex District, MA · twin score 94.5
presidential history
Party record book
Massachusetts 86th 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
76.8%
7,109 votes · D+53.7 · modeled estimate
Runner-up · Joe Biden, 2020 · 71.0%
Republican
William McKinley1896
71.9%
920 votes · R+50.5 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 70.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
9,319votes
71.0% of the vote · D+43.6 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 8,419 votes
Republican
Dwight D. Eisenhower1956
5,449votes
60.9% of the vote · R+21.8 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 5,076 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
Joe Biden2020
+39.1pts D vs U.S.
Place D+43.6 · U.S. D+4.5 · modeled estimate
Runner-up · Hillary Clinton, 2016 · +37.1 pts
Republican
William McKinley1896
+44.4pts R vs U.S.
Place R+50.5 · U.S. R+6.1 · modeled estimate
Runner-up · Alf Landon, 1936 · +25.7 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Nestled in Middlesex County, this state house district delivers lopsided Democratic presidential margins, reflecting the dense, highly educated suburban electorate that defines much of the greater Boston orbit.
Across the recorded series it reached a Democratic high of 53.7 points in 1964 and a Republican high of 50.5 points in 1896. Between 2020 and 2024 the district moved 19.0 points toward the Republican candidate; the 2024 margin was 24.6 points.
A population of 43,564, a 34% non-Hispanic-white share, and a median household income of $82,443 describe the district. The district's voting pattern over the last decade is most similar to that of 11th Essex District and 10th Essex 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 86th State House District. Akashic. https://akashic.app/sld-lower/25086/. Accessed May 20, 2026. License: CC BY 4.0.