- Lead
- 3,521
- Total
- 11,150
- vs nation
- D+33.1
Connecticut 143rd State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 3,844
- Total
- 13,235
- vs nation
- D+24.6
- Lead
- 2,451
- Total
- 11,569
- vs nation
- D+19.1
- Lead
- 1,287
- Total
- 10,904
- vs nation
- D+7.9
- Lead
- 2,202
- Total
- 11,393
- vs nation
- D+12.1
- Lead
- 595
- Total
- 10,981
- vs nation
- D+7.9
- Lead
- 1,071
- Total
- 10,159
- vs nation
- D+10.0
- Lead
- 892
- Total
- 9,633
- vs nation
- D+0.7
Key facts
- 2024 presidential margin
- D+31.6MIT Election Lab
- Population
- 23,1962024 5-year
- Population density
- 2,549 / sq mi2024 5-year · TIGER/Line
- Land area
- 9.1 sq miTIGER/Line
- Median household income
- $143,3522024 5-year
- White (non-Hispanic)
- 68.2%2024 5-year
- Black
- 6.0%2024 5-year
- Hispanic / Latino
- 16.5%2024 5-year
- Peak Democratic margin
- D+31.6 in 2024MIT Election Lab
- Peak Republican margin
- R+43.0 in 1924MIT Election Lab
- Most similar
- State House District 147, CT · twin score 97.7
presidential history
Party record book
Connecticut 143rd 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
Kamala Harris2024
65.0%
7,252 votes · D+31.6 · modeled estimate
Runner-up · Joe Biden, 2020 · 63.9%
Republican
Dwight D. Eisenhower1956
69.6%
5,399 votes · R+39.3 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 65.3%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
8,451votes
63.9% of the vote · D+29.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 7,252 votes
Republican
Ronald Reagan1984
6,944votes
65.0% of the vote · R+30.6 · modeled estimate
Runner-up · Richard Nixon, 1972 · 6,305 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
+33.1pts D vs U.S.
Place D+31.6 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +24.6 pts
Republican
Dwight D. Eisenhower1956
+23.9pts R vs U.S.
Place R+39.3 · U.S. R+15.4 · modeled estimate
Runner-up · Herbert Hoover, 1932 · +22.0 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%6,287 | 38.3%3,908 | 10,195 |
| 2018 | D | 61.4%5,106 | 38.6%3,209 | 8,315 |
With a 2024 presidential margin of D+31.6 in a district of roughly 23,000 residents, HD-143 ranks among the most reliably blue legislative seats in Connecticut, leaving general-election competition largely absent.
Across the recorded series it reached a Democratic high of 31.6 points in 2024 and a Republican high of 43.0 points in 1924. Between 2020 and 2024 the district moved 2.5 points toward the Democratic candidate; the 2024 margin was 31.6 points.
A population of 23,196, a 68% non-Hispanic-white share, and a median household income of $143,352 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 147 and State House District 142.
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 143rd State House District. Akashic. https://akashic.app/sld-lower/09143/. Accessed May 20, 2026. License: CC BY 4.0.