- Lead
- 2,216
- Total
- 12,799
- vs nation
- D+18.8
Connecticut 125th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 3,206
- Total
- 15,258
- vs nation
- D+16.6
- Lead
- 1,651
- Total
- 13,493
- vs nation
- D+10.1
- Lead
- 343
- Total
- 12,703
- vs nation
- R+1.2
- Lead
- 1,343
- Total
- 13,196
- vs nation
- D+2.9
- Lead
- 498
- Total
- 12,931
- vs nation
- R+1.4
- Lead
- 187
- Total
- 11,979
- vs nation
- D+1.0
- Lead
- 72
- Total
- 11,594
- vs nation
- R+7.9
Key facts
- 2024 presidential margin
- D+17.3MIT Election Lab
- Population
- 24,3932024 5-year
- Population density
- 957 / sq mi2024 5-year · TIGER/Line
- Land area
- 25.5 sq miTIGER/Line
- Median household income
- $215,2852024 5-year
- White (non-Hispanic)
- 82.3%2024 5-year
- Black
- 1.4%2024 5-year
- Hispanic / Latino
- 6.2%2024 5-year
- Peak Democratic margin
- D+21.0 in 2020MIT Election Lab
- Peak Republican margin
- R+48.5 in 1924MIT Election Lab
- Most similar
- State House District 141, CT · twin score 99.5
presidential history
Party record book
Connecticut 125th 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
Joe Biden2020
59.5%
9,086 votes · D+21.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 57.7%
Republican
Dwight D. Eisenhower1956
73.4%
6,951 votes · R+46.9 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 69.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
9,086votes
59.5% of the vote · D+21.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 7,384 votes
Republican
Ronald Reagan1984
8,954votes
69.0% of the vote · R+38.8 · modeled estimate
Runner-up · Richard Nixon, 1972 · 8,119 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
Kamala Harris2024
+18.8pts D vs U.S.
Place D+17.3 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +16.6 pts
Republican
Dwight D. Eisenhower1956
+31.5pts R vs U.S.
Place R+46.9 · U.S. R+15.4 · modeled estimate
Runner-up · Herbert Hoover, 1932 · +30.7 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 |
|---|---|---|---|---|
| 2020 | D | 61.7%6,611 | 38.3%4,109 | 10,720 |
| 2018 | D | 61.4%5,370 | 38.6%3,375 | 8,745 |
With a 2024 presidential margin of D+17.3, this 24,000-resident Connecticut House district sits well into the Democratic column, reflecting the broader suburban and coastal voting patterns that have defined much of the state in recent cycles.
Across the recorded series it reached a Democratic high of 21.0 points in 2020 and a Republican high of 48.5 points in 1924. Between 2020 and 2024 the district moved 3.7 points toward the Republican candidate; the 2024 margin was 17.3 points.
A population of 24,393, a 82% non-Hispanic-white share, and a median household income of $215,285 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 141 and State House District 42.
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 →
Connecticut 125th State House District. Akashic. https://akashic.app/sld-lower/09125/. Accessed May 20, 2026. License: CC BY 4.0.