- Lead
- 2,695
- Total
- 24,156
- vs nation
- D+12.6
Massachusetts 55th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 4,206
- Total
- 24,853
- vs nation
- D+12.5
- Lead
- 2,184
- Total
- 23,093
- vs nation
- D+7.4
- Lead
- 4,036
- Total
- 21,735
- vs nation
- D+14.7
- Lead
- 4,024
- Total
- 21,705
- vs nation
- D+11.3
- Lead
- 3,235
- Total
- 20,506
- vs nation
- D+18.2
- Lead
- 3,169
- Total
- 18,870
- vs nation
- D+16.3
- Lead
- 5,030
- Total
- 18,686
- vs nation
- D+18.4
Key facts
- 2024 presidential margin
- D+11.2MIT Election Lab
- Population
- 43,0712024 5-year
- Population density
- 934 / sq mi2024 5-year · TIGER/Line
- Land area
- 46.1 sq miTIGER/Line
- Median household income
- $98,2852024 5-year
- White (non-Hispanic)
- 69.9%2024 5-year
- Black
- 8.0%2024 5-year
- Hispanic / Latino
- 14.5%2024 5-year
- Peak Democratic margin
- D+44.0 in 1964MIT Election Lab
- Peak Republican margin
- R+48.7 in 1896MIT Election Lab
- Most similar
- 6th Hampden District, MA · twin score 90.3
presidential history
Party record book
Massachusetts 55th 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
71.8%
13,808 votes · D+44.0 · modeled estimate
Runner-up · Hubert Humphrey, 1968 · 59.4%
Republican
Warren G. Harding1920
72.0%
5,637 votes · R+46.5 · modeled estimate
Runner-up · William McKinley, 1896 · 71.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
14,258votes
57.4% of the vote · D+16.9 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 13,808 votes
Republican
Dwight D. Eisenhower1956
12,634votes
59.6% of the vote · R+19.6 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1952 · 11,919 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
Hubert Humphrey1968
+25.5pts D vs U.S.
Place D+24.8 · U.S. R+0.7 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · +21.4 pts
Republican
William McKinley1896
+42.6pts R vs U.S.
Place R+48.7 · U.S. R+6.1 · modeled estimate
Runner-up · William H. Taft, 1912 · +27.6 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 |
|---|---|---|---|---|
| 2020 | D | 99.9%14,993 | 0.1%9 | 15,002 |
Anchored in Hampden County's post-industrial corridor, this district's D+11 presidential lean reflects the working-class urban electorate that shapes western Massachusetts state house contests.
Across the recorded series it reached a Democratic high of 44.0 points in 1964 and a Republican high of 48.7 points in 1896. Between 2020 and 2024 the district moved 5.8 points toward the Republican candidate; the 2024 margin was 11.2 points.
A population of 43,071, a 70% non-Hispanic-white share, and a median household income of $98,285 describe the district. The district's voting pattern over the last decade is most similar to that of 6th Hampden District and 8th Hampden 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 55th State House District. Akashic. https://akashic.app/sld-lower/25055/. Accessed May 20, 2026. License: CC BY 4.0.