- Lead
- 7,954
- Total
- 25,080
- vs nation
- D+33.2
Massachusetts 103rd State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 10,534
- Total
- 26,647
- vs nation
- D+35.1
- Lead
- 7,277
- Total
- 24,355
- vs nation
- D+27.8
- Lead
- 4,822
- Total
- 22,675
- vs nation
- D+17.4
- Lead
- 5,313
- Total
- 22,442
- vs nation
- D+16.4
- Lead
- 5,810
- Total
- 21,588
- vs nation
- D+29.4
- Lead
- 6,322
- Total
- 20,560
- vs nation
- D+30.2
- Lead
- 6,681
- Total
- 19,555
- vs nation
- D+25.6
Key facts
- 2024 presidential margin
- D+31.7MIT Election Lab
- Population
- 44,2402024 5-year
- Population density
- 1,131 / sq mi2024 5-year · TIGER/Line
- Land area
- 39.1 sq miTIGER/Line
- Median household income
- $155,2412024 5-year
- White (non-Hispanic)
- 69.5%2024 5-year
- Black
- 8.0%2024 5-year
- Hispanic / Latino
- 4.3%2024 5-year
- Peak Democratic margin
- D+50.9 in 1964MIT Election Lab
- Peak Republican margin
- R+53.1 in 1896MIT Election Lab
- Most similar
- 31st Middlesex District, MA · twin score 97.1
presidential history
Party record book
Massachusetts 103rd 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
75.2%
12,761 votes · D+50.9 · modeled estimate
Runner-up · Joe Biden, 2020 · 68.7%
Republican
Warren G. Harding1920
72.8%
3,328 votes · R+48.4 · modeled estimate
Runner-up · William McKinley, 1896 · 72.3%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
18,311votes
68.7% of the vote · D+39.5 · modeled estimate
Runner-up · Kamala Harris, 2024 · 16,153 votes
Republican
Ronald Reagan1984
9,647votes
50.6% of the vote · R+1.6 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · 9,362 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
+35.1pts D vs U.S.
Place D+39.5 · U.S. D+4.5 · modeled estimate
Runner-up · George McGovern, 1972 · +34.2 pts
Republican
William McKinley1896
+47.0pts R vs U.S.
Place R+53.1 · U.S. R+6.1 · modeled estimate
Runner-up · Alf Landon, 1936 · +31.6 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 | 81.3%16,042 | 18.7%3,685 | 19,727 |
| 2020 | D | 81.2%16,415 | 18.8%3,792 | 20,207 |
The 8th Norfolk posted a D+31.7 presidential margin in 2024, placing it among the commonwealth's more lopsided legislative districts. Its suburban Boston geography and college-educated demographic profile have deepened that lean over successive cycles.
Across the recorded series it reached a Democratic high of 50.9 points in 1964 and a Republican high of 53.1 points in 1896. Between 2020 and 2024 the district moved 7.8 points toward the Republican candidate; the 2024 margin was 31.7 points.
A population of 44,240, a 70% non-Hispanic-white share, and a median household income of $155,241 describe the district. The district's voting pattern over the last decade is most similar to that of 31st Middlesex District and 21st 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 103rd State House District. Akashic. https://akashic.app/sld-lower/25103/. Accessed May 20, 2026. License: CC BY 4.0.