- Lead
- 3,398
- Total
- 11,658
- vs nation
- D+30.6
Connecticut 13th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 4,245
- Total
- 12,382
- vs nation
- D+29.8
- Lead
- 2,685
- Total
- 11,104
- vs nation
- D+22.1
- Lead
- 2,926
- Total
- 10,606
- vs nation
- D+23.7
- Lead
- 3,701
- Total
- 11,181
- vs nation
- D+25.8
- Lead
- 2,221
- Total
- 10,565
- vs nation
- D+23.5
- Lead
- 2,706
- Total
- 10,051
- vs nation
- D+26.4
- Lead
- 2,647
- Total
- 9,929
- vs nation
- D+18.1
Key facts
- 2024 presidential margin
- D+29.1MIT Election Lab
- Population
- 23,4182024 5-year
- Population density
- 1,183 / sq mi2024 5-year · TIGER/Line
- Land area
- 19.8 sq miTIGER/Line
- Median household income
- $92,8012024 5-year
- White (non-Hispanic)
- 62.9%2024 5-year
- Black
- 11.3%2024 5-year
- Hispanic / Latino
- 14.7%2024 5-year
- Peak Democratic margin
- D+47.6 in 1964MIT Election Lab
- Peak Republican margin
- R+38.7 in 1896MIT Election Lab
- Most similar
- State House District 12, CT · twin score 92.9
presidential history
Party record book
Connecticut 13th 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
73.6%
6,572 votes · D+47.6 · modeled estimate
Runner-up · Joe Biden, 2020 · 66.2%
Republican
William McKinley1896
66.5%
642 votes · R+38.7 · 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
8,199votes
66.2% of the vote · D+34.3 · modeled estimate
Runner-up · Kamala Harris, 2024 · 7,411 votes
Republican
Ronald Reagan1984
5,472votes
54.0% of the vote · R+8.5 · modeled estimate
Runner-up · Richard Nixon, 1972 · 5,108 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
+30.6pts D vs U.S.
Place D+29.1 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +29.8 pts
Republican
William McKinley1896
+32.6pts R vs U.S.
Place R+38.7 · U.S. R+6.1 · modeled estimate
Runner-up · William H. Taft, 1912 · +18.9 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%6,867 | 36.6%3,960 | 10,827 |
| 2018 | D | 63.6%5,350 | 36.4%3,065 | 8,415 |
In 2024 it voted Democratic by D+29.2, against D+33.1 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 47.6 points in 1964 and a Republican high of 38.7 points in 1896. Between 2020 and 2024 the district moved 5.1 points toward the Republican candidate; the 2024 margin was 29.1 points.
A population of 23,418, a 63% non-Hispanic-white share, and a median household income of $92,801 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 12 and State House District 18.
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 13th State House District. Akashic. https://akashic.app/sld-lower/09013/. Accessed May 20, 2026. License: CC BY 4.0.