- Lead
- 14,995
- Total
- 24,823
- vs nation
- D+61.9
Massachusetts 70th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 17,830
- Total
- 27,119
- vs nation
- D+61.3
- Lead
- 15,797
- Total
- 25,415
- vs nation
- D+60.1
- Lead
- 13,010
- Total
- 22,724
- vs nation
- D+53.4
- Lead
- 13,311
- Total
- 22,409
- vs nation
- D+52.1
- Lead
- 12,728
- Total
- 21,302
- vs nation
- D+62.2
- Lead
- 12,000
- Total
- 20,608
- vs nation
- D+57.7
- Lead
- 12,183
- Total
- 19,922
- vs nation
- D+52.6
Key facts
- 2024 presidential margin
- D+60.4MIT Election Lab
- Population
- 46,0522024 5-year
- Population density
- 3,655 / sq mi2024 5-year · TIGER/Line
- Land area
- 12.6 sq miTIGER/Line
- Median household income
- $191,2642024 5-year
- White (non-Hispanic)
- 68.4%2024 5-year
- Black
- 2.6%2024 5-year
- Hispanic / Latino
- 5.1%2024 5-year
- Peak Democratic margin
- D+74.9 in 1964MIT Election Lab
- Peak Republican margin
- R+18.1 in 1896MIT Election Lab
- Most similar
- 24th Middlesex District, MA · twin score 98.7
presidential history
Party record book
Massachusetts 70th 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
87.3%
16,658 votes · D+74.9 · modeled estimate
Runner-up · Joe Biden, 2020 · 81.9%
Republican
William McKinley1896
55.5%
869 votes · R+18.1 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 53.2%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
22,197votes
81.9% of the vote · D+65.7 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 19,735 votes
Republican
Dwight D. Eisenhower1956
5,973votes
42.8% of the vote · D+14.1 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 5,606 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
+70.4pts D vs U.S.
Place D+47.2 · U.S. R+23.2 · modeled estimate
Runner-up · John Kerry, 2004 · +62.2 pts
Republican
William McKinley1896
+12.1pts R vs U.S.
Place R+18.1 · U.S. R+6.1 · modeled estimate
Runner-up · Alf Landon, 1936 · −6.7 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 | 95.4%17,354 | 4.6%836 | 18,190 |
| 2020 | D | 81.3%17,617 | 18.7%4,062 | 21,679 |
With a 2024 presidential margin of D+60.4, the 12th Middlesex District ranks among the most lopsided legislative districts in the commonwealth, reflecting the dense, urban-leaning concentration of its roughly 46,000 residents.
Across the recorded series it reached a Democratic high of 74.9 points in 1964 and a Republican high of 18.1 points in 1896. Between 2020 and 2024 the district moved 5.3 points toward the Republican candidate; the 2024 margin was 60.4 points.
A population of 46,052, a 68% non-Hispanic-white share, and a median household income of $191,264 describe the district. The district's voting pattern over the last decade is most similar to that of 24th Middlesex District and 11th 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 70th State House District. Akashic. https://akashic.app/sld-lower/25070/. Accessed May 20, 2026. License: CC BY 4.0.