- Lead
- 15,721
- Total
- 25,761
- vs nation
- D+62.5
Massachusetts 81st State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 16,876
- Total
- 26,953
- vs nation
- D+58.2
- Lead
- 13,556
- Total
- 25,526
- vs nation
- D+51.0
- Lead
- 10,600
- Total
- 23,312
- vs nation
- D+41.6
- Lead
- 10,967
- Total
- 22,777
- vs nation
- D+40.9
- Lead
- 10,262
- Total
- 21,543
- vs nation
- D+50.1
- Lead
- 9,894
- Total
- 20,542
- vs nation
- D+47.6
- Lead
- 10,343
- Total
- 19,788
- vs nation
- D+43.7
Key facts
- 2024 presidential margin
- D+61.0MIT Election Lab
- Population
- 43,7802024 5-year
- Population density
- 8,260 / sq mi2024 5-year · TIGER/Line
- Land area
- 5.3 sq miTIGER/Line
- Median household income
- $150,1182024 5-year
- White (non-Hispanic)
- 74.7%2024 5-year
- Black
- 3.9%2024 5-year
- Hispanic / Latino
- 4.5%2024 5-year
- Peak Democratic margin
- D+66.8 in 1964MIT Election Lab
- Peak Republican margin
- R+35.1 in 1896MIT Election Lab
- Most similar
- 24th Middlesex District, MA · twin score 98.6
presidential history
Party record book
Massachusetts 81st 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
83.3%
15,739 votes · D+66.8 · modeled estimate
Runner-up · Joe Biden, 2020 · 80.4%
Republican
William McKinley1896
63.9%
1,352 votes · R+35.1 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 60.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
21,662votes
80.4% of the vote · D+62.6 · modeled estimate
Runner-up · Kamala Harris, 2024 · 20,370 votes
Republican
Dwight D. Eisenhower1956
7,908votes
50.5% of the vote · R+1.1 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 7,367 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
Kamala Harris2024
+62.5pts D vs U.S.
Place D+61.0 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +58.2 pts
Republican
William McKinley1896
+29.0pts R vs U.S.
Place R+35.1 · U.S. R+6.1 · modeled estimate
Runner-up · Alf Landon, 1936 · +6.4 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | D | 100.0%16,590 | 0.0%0 | 16,590 |
| 2020 | D | 80.6%16,742 | 19.4%4,025 | 20,767 |
The 23rd Middlesex District recorded a 61.0-point Democratic presidential margin in 2024, placing it among the most uniform legislative districts in the state and leaving little competitive ground for statewide or local challengers.
Across the recorded series it reached a Democratic high of 66.8 points in 1964 and a Republican high of 35.1 points in 1896. Between 2020 and 2024 the district moved 1.6 points toward the Republican candidate; the 2024 margin was 61.0 points.
A population of 43,780, a 75% non-Hispanic-white share, and a median household income of $150,118 describe the district. The district's voting pattern over the last decade is most similar to that of 24th Middlesex District and 5th Middlesex 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 81st State House District. Akashic. https://akashic.app/sld-lower/25081/. Accessed May 20, 2026. License: CC BY 4.0.