- Lead
- 29,335
- Total
- 92,247
- vs nation
- D+33.3
Massachusetts Fifth Middlesex District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 38,042
- Total
- 98,431
- vs nation
- D+34.2
- Lead
- 25,989
- Total
- 90,561
- vs nation
- D+26.6
- Lead
- 14,259
- Total
- 85,417
- vs nation
- D+12.8
- Lead
- 16,646
- Total
- 82,542
- vs nation
- D+12.9
- Lead
- 15,229
- Total
- 78,362
- vs nation
- D+21.9
- Lead
- 16,504
- Total
- 74,074
- vs nation
- D+21.8
- Lead
- 19,708
- Total
- 70,176
- vs nation
- D+19.6
Key facts
- 2024 presidential margin
- D+31.8MIT Election Lab
- Population
- 183,6422024 5-year
- Population density
- 5,158 / sq mi2024 5-year · TIGER/Line
- Land area
- 35.6 sq miTIGER/Line
- Median household income
- $122,3182024 5-year
- White (non-Hispanic)
- 66.8%2024 5-year
- Black
- 6.4%2024 5-year
- Hispanic / Latino
- 6.3%2024 5-year
- Peak Democratic margin
- D+44.7 in 1964MIT Election Lab
- Peak Republican margin
- R+56.9 in 1896MIT Election Lab
- Most similar
- Fourth Middlesex District, MA · twin score 97.6
presidential history
Party record book
Massachusetts Fifth Middlesex 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
72.2%
46,207 votes · D+44.7 · modeled estimate
Runner-up · Joe Biden, 2020 · 68.3%
Republican
Warren G. Harding1920
74.3%
20,419 votes · R+50.7 · modeled estimate
Runner-up · William McKinley, 1896 · 74.1%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
67,202votes
68.3% of the vote · D+38.6 · modeled estimate
Runner-up · Kamala Harris, 2024 · 59,446 votes
Republican
Dwight D. Eisenhower1956
44,684votes
66.1% of the vote · R+32.5 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 41,696 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
Joe Biden2020
+34.2pts D vs U.S.
Place D+38.6 · U.S. D+4.5 · modeled estimate
Runner-up · Kamala Harris, 2024 · +33.3 pts
Republican
William McKinley1896
+50.8pts R vs U.S.
Place R+56.9 · U.S. R+6.1 · modeled estimate
Runner-up · Alf Landon, 1936 · +36.6 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 | 100.0%69,590 | 0.0%0 | 69,590 |
| 2020 | D | 80.6%70,226 | 19.4%16,882 | 87,108 |
Anchored in dense inner-suburb communities northwest of Boston, the Fifth Middlesex District delivered a 31-point presidential margin in 2024, placing it among the Commonwealth's most lopsided legislative constituencies.
Across the recorded series it reached a Democratic high of 44.7 points in 1964 and a Republican high of 56.9 points in 1896. Between 2020 and 2024 the district moved 6.8 points toward the Republican candidate; the 2024 margin was 31.8 points.
A population of 183,642, a 67% non-Hispanic-white share, and a median household income of $122,318 describe the district. The district's voting pattern over the last decade is most similar to that of Fourth Middlesex District and Middlesex and Norfolk District.
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 Fifth Middlesex District. Akashic. https://akashic.app/sld-upper/25D23/. Accessed May 20, 2026. License: CC BY 4.0.