Religious adherence is published only at the county level (U.S. Religion Census). See Barnstable County.
American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.
Massachusetts 3rd State House District
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Massachusetts 3rd State House DistrictHarrisD+17.3
20082024
How it voted
Share of the 2024 vote
Kamala Harris ✓Democratic
57.1%
17,392
Donald TrumpRepublican
39.8%
12,124
Jill SteinGreen-Rainbow
3.1%
957
D+60R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 1 county it's drawn from (shown faint).
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
County-level results (1 county) — table
2024 presidential result by county for Massachusetts 3rd State House District — winner and D-vs-R margin.
County
Winner
Margin
Barnstable County, MA
Democratic
D+20.6
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5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
Year
Won
Democratic
Republican
Other
Margin
Total
D
57.1%Harris17,392
39.8%Trump12,124
3.1%Stein957
+17.3%
30,473
D
59.4%Biden17,729
38.6%Trump11,519
2.0%Jorgensen588
+20.8%
29,836
D
51.6%Clinton13,701
41.7%Trump11,074
6.7%Johnson1,775
+9.9%
26,550
D
52.2%Obama12,598
47.8%Romney11,549
0.0%
+4.3%
24,147
D
54.9%Obama13,595
43.3%McCain10,725
1.7%Nader430
+11.6%
24,750
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presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2008
+11.6%
2012
+4.3%
2016
+9.9%
2020
+20.8%
2024
+17.3%
DemocraticRepublican
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current representation
Current officeholders
RDave VieiraState House · 3rd Barnstable
State legislative officeholder from OpenStates nightly current-legislator data.
Covering a slice of Barnstable County on Cape Cod, this coastal Massachusetts district leans heavily Democratic in federal contests, reflecting the region's educated, older, and seasonally inflated residential base.
Across the recorded series it reached a Democratic high of 20.8 points in 2020. Between 2020 and 2024 the district moved 3.5 points toward the Republican candidate; the 2024 margin was 17.3 points.
A population of 44,368, a 87% non-Hispanic-white share, and a median household income of $98,822 describe the district. The district's voting pattern over the last decade is most similar to that of 1st Barnstable District and 2nd Barnstable District.
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Political twins — state-house districts
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.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Massachusetts 3rd State House District. Akashic. https://akashic.app/sld-lower/25003/. Accessed May 20, 2026. License: CC BY 4.0.
How did Massachusetts 3rd State House District vote in 2024?
In 2024, Massachusetts 3rd State House District voted Democratic by 17.3 points (D+17.3), carried by the Democratic candidate. Out of 30,473 votes cast, 17,392 went Democratic and 12,124 went Republican.
How many people live in Massachusetts 3rd State House District?
Massachusetts 3rd State House District has a population of 44,368 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Massachusetts 3rd State House District?
Median household income in Massachusetts 3rd State House District is $98,822 — above the national median of $80,734. The Massachusetts state median is $103,960.
What is the political history of Massachusetts 3rd State House District?
Akashic tracks 5 presidential elections in Massachusetts 3rd State House District from 2008 to 2024. Of those, 5 went Democratic and 0 went Republican.
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