- Lead
- 7,372
- Total
- 10,329
- vs nation
- D+72.8
Massachusetts 129th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 10,841
- Total
- 12,679
- vs nation
- D+81.0
- Lead
- 11,260
- Total
- 13,089
- vs nation
- D+85.0
- Lead
- 10,048
- Total
- 11,355
- vs nation
- D+84.6
- Lead
- 9,485
- Total
- 10,753
- vs nation
- D+80.9
- Lead
- 8,315
- Total
- 9,490
- vs nation
- D+90.1
- Lead
- 6,974
- Total
- 8,503
- vs nation
- D+82.2
- Lead
- 6,624
- Total
- 7,939
- vs nation
- D+74.9
Key facts
- 2024 presidential margin
- D+71.4MIT Election Lab
- Population
- 44,8972024 5-year
- Population density
- 23,630 / sq mi2024 5-year · TIGER/Line
- Land area
- 1.9 sq miTIGER/Line
- Median household income
- $52,4512024 5-year
- White (non-Hispanic)
- 29.5%2024 5-year
- Black
- 30.6%2024 5-year
- Hispanic / Latino
- 22.6%2024 5-year
- Peak Democratic margin
- D+93.1 in 1964MIT Election Lab
- Most similar
- 5th Suffolk District, MA · twin score 94.8
presidential history
Party record book
Massachusetts 129th 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
96.5%
12,475 votes · D+93.1 · modeled estimate
Runner-up · Barack Obama, 2012 · 93.6%
Republican
William McKinley1896
24.2%
528 votes · D+38.8 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 23.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Harry S. Truman1948
12,881votes
89.6% of the vote · D+82.2 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 12,475 votes
Republican
Dwight D. Eisenhower1956
1,676votes
15.2% of the vote · D+69.1 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1952 · 1,623 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
+103.3pts D vs U.S.
Place D+80.2 · U.S. R+23.2 · modeled estimate
Runner-up · Al Smith, 1928 · +98.1 pts
Republican
William H. Taft1912
−38.1pts R vs U.S.
Place D+57.7 · U.S. D+19.5 · modeled estimate
Runner-up · William McKinley, 1896 · −44.9 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
The 7th Suffolk district's 2024 presidential margin of D+71.4 ranks it among the most lopsided legislative constituencies in the state, reflecting a dense, majority-minority urban electorate concentrated in Boston's core neighborhoods.
Across the recorded series it reached a Democratic high of 93.1 points in 1964. Between 2020 and 2024 the district moved 14.1 points toward the Republican candidate; the 2024 margin was 71.4 points.
A population of 44,897, a 30% non-Hispanic-white share, and a median household income of $52,451 describe the district. The district's voting pattern over the last decade is most similar to that of 5th Suffolk 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 129th State House District. Akashic. https://akashic.app/sld-lower/25129/. Accessed May 20, 2026. License: CC BY 4.0.