- Lead
- 3,271
- Total
- 9,402
- vs nation
- D+36.3
Connecticut 9th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 3,950
- Total
- 11,096
- vs nation
- D+31.1
- Lead
- 2,927
- Total
- 10,073
- vs nation
- D+27.0
- Lead
- 3,131
- Total
- 9,726
- vs nation
- D+28.3
- Lead
- 3,879
- Total
- 10,252
- vs nation
- D+30.6
- Lead
- 2,475
- Total
- 9,608
- vs nation
- D+28.2
- Lead
- 2,893
- Total
- 9,101
- vs nation
- D+31.3
- Lead
- 2,791
- Total
- 8,836
- vs nation
- D+23.1
Key facts
- 2024 presidential margin
- D+34.8MIT Election Lab
- Population
- 23,3522024 5-year
- Population density
- 2,267 / sq mi2024 5-year · TIGER/Line
- Land area
- 10.3 sq miTIGER/Line
- Median household income
- $84,2722024 5-year
- White (non-Hispanic)
- 45.4%2024 5-year
- Black
- 18.4%2024 5-year
- Hispanic / Latino
- 22.4%2024 5-year
- Peak Democratic margin
- D+51.4 in 1964MIT Election Lab
- Peak Republican margin
- R+33.9 in 1896MIT Election Lab
- Most similar
- State House District 10, CT · twin score 90.5
presidential history
Party record book
Connecticut 9th 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
75.6%
6,264 votes · D+51.4 · modeled estimate
Runner-up · Barack Obama, 2008 · 68.4%
Republican
William McKinley1896
65.4%
551 votes · R+33.9 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 60.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
7,450votes
67.1% of the vote · D+35.6 · modeled estimate
Runner-up · Barack Obama, 2008 · 7,009 votes
Republican
Ronald Reagan1984
4,707votes
51.5% of the vote · R+3.2 · modeled estimate
Runner-up · Richard Nixon, 1972 · 4,375 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
+36.3pts D vs U.S.
Place D+34.8 · U.S. R+1.5 · modeled estimate
Runner-up · Al Gore, 2000 · +31.3 pts
Republican
William McKinley1896
+27.8pts R vs U.S.
Place R+33.9 · U.S. R+6.1 · modeled estimate
Runner-up · William H. Taft, 1912 · +13.1 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 | 63.4%6,848 | 36.6%3,949 | 10,797 |
| 2018 | D | 63.6%5,335 | 36.4%3,057 | 8,392 |
The district recorded a Democratic presidential margin of D+34.8 in 2024, compared with D+37.8 in 2008. Catholic adherents were the largest religious group at 46.1% in the 2020 US Religion Census.
Across the recorded series it reached a Democratic high of 51.4 points in 1964 and a Republican high of 33.9 points in 1896. Between 2020 and 2024 the district moved 0.8 points toward the Republican candidate; the 2024 margin was 34.8 points.
A population of 23,352, a 45% non-Hispanic-white share, and a median household income of $84,272 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 10 and State House District 115.
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 9th State House District. Akashic. https://akashic.app/sld-lower/09009/. Accessed May 20, 2026. License: CC BY 4.0.