- Lead
- 37,910
- Total
- 78,049
- vs nation
- D+50.0
Massachusetts First Suffolk District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 51,756
- Total
- 86,209
- vs nation
- D+55.6
- Lead
- 49,197
- Total
- 80,427
- vs nation
- D+59.1
- Lead
- 40,284
- Total
- 71,587
- vs nation
- D+52.4
- Lead
- 37,719
- Total
- 68,118
- vs nation
- D+48.1
- Lead
- 32,108
- Total
- 60,898
- vs nation
- D+55.2
- Lead
- 27,801
- Total
- 54,986
- vs nation
- D+50.0
- Lead
- 26,628
- Total
- 50,509
- vs nation
- D+44.2
Key facts
- 2024 presidential margin
- D+48.6MIT Election Lab
- Population
- 184,2372024 5-year
- Population density
- 15,353 / sq mi2024 5-year · TIGER/Line
- Land area
- 12 sq miTIGER/Line
- Median household income
- $112,7982024 5-year
- White (non-Hispanic)
- 46.4%2024 5-year
- Black
- 18.3%2024 5-year
- Hispanic / Latino
- 13.4%2024 5-year
- Peak Democratic margin
- D+72.5 in 1964MIT Election Lab
- Peak Republican margin
- R+28.3 in 1896MIT Election Lab
- Most similar
- Middlesex and Suffolk District, MA · twin score 96.6
presidential history
Party record book
Massachusetts First Suffolk 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
86.1%
64,894 votes · D+72.5 · modeled estimate
Runner-up · Joe Biden, 2020 · 79.1%
Republican
William McKinley1896
59.6%
13,637 votes · R+28.3 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 58.2%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
68,159votes
79.1% of the vote · D+60.0 · modeled estimate
Runner-up · Harry S. Truman, 1948 · 67,025 votes
Republican
Dwight D. Eisenhower1956
41,396votes
45.9% of the vote · D+7.6 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1952 · 41,224 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
Hillary Clinton2016
+59.1pts D vs U.S.
Place D+61.2 · U.S. D+2.1 · modeled estimate
Runner-up · Hubert Humphrey, 1968 · +57.8 pts
Republican
William McKinley1896
+22.2pts R vs U.S.
Place R+28.3 · U.S. R+6.1 · modeled estimate
Runner-up · William H. Taft, 1912 · −2.4 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 | 92.7%55,234 | 7.3%4,326 | 59,560 |
| 2020 | D | 96.7%61,598 | 3.3%2,090 | 63,688 |
Centered in Boston's urban core, the First Suffolk District recorded a 48.6-point Democratic presidential margin in 2024, reflecting a dense, majority-minority electorate with some of the state's highest rates of renter households and transit dependence.
Across the recorded series it reached a Democratic high of 72.5 points in 1964 and a Republican high of 28.3 points in 1896. Between 2020 and 2024 the district moved 11.5 points toward the Republican candidate; the 2024 margin was 48.6 points.
A population of 184,237, a 46% non-Hispanic-white share, and a median household income of $112,798 describe the district. The district's voting pattern over the last decade is most similar to that of Middlesex and Suffolk District and State Senate District 59.
The state-senate 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 First Suffolk District. Akashic. https://akashic.app/sld-upper/25D30/. Accessed May 20, 2026. License: CC BY 4.0.