- Lead
- 51,736
- Total
- 381,145
- vs nation
- D+15.0
Massachusetts 1st Congressional District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 85,150
- Total
- 394,512
- vs nation
- D+17.1
- Lead
- 64,091
- Total
- 372,216
- vs nation
- D+15.1
- Lead
- 87,823
- Total
- 351,209
- vs nation
- D+21.2
- Lead
- 90,913
- Total
- 351,925
- vs nation
- D+18.6
- Lead
- 77,410
- Total
- 335,081
- vs nation
- D+25.6
- Lead
- 65,122
- Total
- 308,243
- vs nation
- D+20.6
- Lead
- 93,932
- Total
- 303,509
- vs nation
- D+22.4
Key facts
- 2024 presidential margin
- D+13.6MIT Election Lab
- Population
- 781,1352024 5-year
- Population density
- 350 / sq mi2024 5-year · TIGER/Line
- Land area
- 2,233 sq miTIGER/Line
- Median household income
- $75,6632024 5-year
- White (non-Hispanic)
- 69.4%2024 5-year
- Black
- 5.7%2024 5-year
- Hispanic / Latino
- 18.7%2024 5-year
- Peak Democratic margin
- D+47.1 in 1964MIT Election Lab
- Peak Republican margin
- R+50.3 in 1896MIT Election Lab
- Most similar
- Congressional District 2, MA · twin score 77.7
presidential history
Party record book
Massachusetts 1st Congressional 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
73.3%
218,211 votes · D+47.1 · modeled estimate
Runner-up · Barack Obama, 2008 · 61.6%
Republican
William McKinley1896
71.6%
36,406 votes · R+50.3 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 69.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
235,198votes
59.6% of the vote · D+21.6 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 218,211 votes
Republican
Dwight D. Eisenhower1956
192,363votes
60.2% of the vote · R+20.9 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1952 · 178,880 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
John Kerry2004
+25.6pts D vs U.S.
Place D+23.1 · U.S. R+2.5 · modeled estimate
Runner-up · Hubert Humphrey, 1968 · +25.3 pts
Republican
William McKinley1896
+44.2pts R vs U.S.
Place R+50.3 · U.S. R+6.1 · modeled estimate
Runner-up · William H. Taft, 1912 · +28.1 pts
Current officeholders
Federal officeholders only. State and local officeholders are planned for the next data pass.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
Massachusetts's 1st stretches across the Berkshires and the Connecticut River Valley, blending college towns like Amherst with post-industrial cities like Springfield. It has returned Democratic presidential margins above 15 points in recent cycles.
Across the recorded series it reached a Democratic high of 47.1 points in 1964 and a Republican high of 50.3 points in 1896. Between 2020 and 2024 the district moved 8.0 points toward the Republican candidate; the 2024 margin was 13.6 points.
A population of 781,135, a 69% non-Hispanic-white share, and a median household income of $75,663 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 2 and Congressional District 1.
The congressional 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 1st Congressional District. Akashic. https://akashic.app/cd/2501/. Accessed May 20, 2026. License: CC BY 4.0.