- Lead
- 11,397
- Total
- 27,031
- vs nation
- D+43.6
Connecticut 23rd State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 17,096
- Total
- 26,262
- vs nation
- D+60.6
- Lead
- 17,865
- Total
- 24,623
- vs nation
- D+70.5
- Lead
- 15,394
- Total
- 22,082
- vs nation
- D+65.9
- Lead
- 17,745
- Total
- 24,144
- vs nation
- D+66.2
- Lead
- 14,061
- Total
- 21,465
- vs nation
- D+68.0
- Lead
- 13,532
- Total
- 20,286
- vs nation
- D+66.2
- Lead
- 11,956
- Total
- 18,740
- vs nation
- D+55.3
Key facts
- 2024 presidential margin
- D+42.2MIT Election Lab
- Population
- 99,3382024 5-year
- Population density
- 8,564 / sq mi2024 5-year · TIGER/Line
- Land area
- 11.6 sq miTIGER/Line
- Median household income
- $51,5512024 5-year
- White (non-Hispanic)
- 10.0%2024 5-year
- Black
- 36.4%2024 5-year
- Hispanic / Latino
- 45.8%2024 5-year
- Peak Democratic margin
- D+81.6 in 1876MIT Election Lab
- Most similar
- State Senate District 10, CT · twin score 96.1
presidential history
Party record book
Connecticut 23rd State Senate 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
Samuel J. Tilden1876
90.8%
1,007 votes · D+81.6 · modeled estimate
Runner-up · Winfield S. Hancock, 1880 · 88.7%
Republican
Dwight D. Eisenhower1956
35.3%
3,989 votes · D+29.4 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 35.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
21,564votes
82.1% of the vote · D+65.1 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 20,991 votes
Republican
Donald Trump2024
7,651votes
28.3% of the vote · D+42.2 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 5,042 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
Alton B. Parker1904
+77.0pts D vs U.S.
Place D+57.4 · U.S. R+19.7 · modeled estimate
Runner-up · Al Smith, 1928 · +74.2 pts
Republican
William H. Taft1912
−40.3pts R vs U.S.
Place D+59.8 · U.S. D+19.5 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · −41.8 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Connecticut 23rd State Senate District sits in New England. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 81.6 points in 1876. Between 2020 and 2024 the district moved 22.9 points toward the Republican candidate; the 2024 margin was 42.2 points.
A population of 99,338, a 10% non-Hispanic-white share, and a median household income of $51,551 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 10 and State Senate District 31.
The state-senate 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 23rd State Senate District. Akashic. https://akashic.app/sld-upper/09023/. Accessed May 20, 2026. License: CC BY 4.0.