- Lead
- 13,879
- Total
- 19,001
- vs nation
- D+74.5
Massachusetts 134th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 17,146
- Total
- 21,393
- vs nation
- D+75.7
- Lead
- 16,226
- Total
- 20,158
- vs nation
- D+78.4
- Lead
- 14,107
- Total
- 17,788
- vs nation
- D+75.5
- Lead
- 13,456
- Total
- 17,052
- vs nation
- D+71.6
- Lead
- 12,064
- Total
- 15,388
- vs nation
- D+80.9
- Lead
- 10,508
- Total
- 13,923
- vs nation
- D+75.0
- Lead
- 10,001
- Total
- 13,099
- vs nation
- D+67.8
Key facts
- 2024 presidential margin
- D+73.0MIT Election Lab
- Population
- 42,8322024 5-year
- Population density
- 10,708 / sq mi2024 5-year · TIGER/Line
- Land area
- 4 sq miTIGER/Line
- Median household income
- $97,6402024 5-year
- White (non-Hispanic)
- 19.0%2024 5-year
- Black
- 55.1%2024 5-year
- Hispanic / Latino
- 14.3%2024 5-year
- Peak Democratic margin
- D+88.3 in 1964MIT Election Lab
- Most similar
- 6th Suffolk District, MA · twin score 96.6
presidential history
Party record book
Massachusetts 134th 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
94.1%
17,905 votes · D+88.3 · modeled estimate
Runner-up · Joe Biden, 2020 · 89.4%
Republican
William McKinley1896
35.5%
1,048 votes · D+23.6 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 32.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
19,136votes
89.4% of the vote · D+80.1 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 17,905 votes
Republican
Dwight D. Eisenhower1956
3,705votes
22.9% of the vote · D+54.0 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1952 · 3,642 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
+91.6pts D vs U.S.
Place D+68.4 · U.S. R+23.2 · modeled estimate
Runner-up · Al Smith, 1928 · +88.0 pts
Republican
William McKinley1896
−29.6pts R vs U.S.
Place D+23.6 · U.S. R+6.1 · modeled estimate
Runner-up · William H. Taft, 1912 · −36.2 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 | 90.3%13,320 | 9.7%1,428 | 14,748 |
| 2020 | D | 94.1%14,658 | 5.9%923 | 15,581 |
The 12th Suffolk District records presidential margins exceeding 70 points, placing it among the most Democratic-concentrated legislative districts in the state. Its electorate reflects the dense, majority-minority urban neighborhoods of inner Boston.
Across the recorded series it reached a Democratic high of 88.3 points in 1964. Between 2020 and 2024 the district moved 7.1 points toward the Republican candidate; the 2024 margin was 73.0 points.
A population of 42,832, a 19% non-Hispanic-white share, and a median household income of $97,640 describe the district. The district's voting pattern over the last decade is most similar to that of 6th Suffolk District and 14th 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 134th State House District. Akashic. https://akashic.app/sld-lower/25134/. Accessed May 20, 2026. License: CC BY 4.0.