- Lead
- 1,351
- Total
- 11,707
- vs nation
- R+10.1
Connecticut 99th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 445
- Total
- 11,825
- vs nation
- R+8.2
- Lead
- 1,084
- Total
- 10,328
- vs nation
- R+12.6
- Lead
- 83
- Total
- 9,652
- vs nation
- R+4.7
- Lead
- 44
- Total
- 10,184
- vs nation
- R+6.8
- Lead
- 1,255
- Total
- 10,023
- vs nation
- R+10.1
- Lead
- 21
- Total
- 8,986
- vs nation
- R+0.3
- Lead
- 142
- Total
- 8,446
- vs nation
- R+6.8
Key facts
- 2024 presidential margin
- R+11.5MIT Election Lab
- Population
- 23,3792024 5-year
- Population density
- 2,410 / sq mi2024 5-year · TIGER/Line
- Land area
- 9.7 sq miTIGER/Line
- Median household income
- $93,1402024 5-year
- White (non-Hispanic)
- 69.8%2024 5-year
- Black
- 4.8%2024 5-year
- Hispanic / Latino
- 18.7%2024 5-year
- Peak Democratic margin
- D+16.4 in 1964MIT Election Lab
- Peak Republican margin
- R+46.5 in 1956MIT Election Lab
- Most similar
- State House District 85, CT · twin score 91.0
presidential history
Party record book
Connecticut 99th 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
58.2%
4,748 votes · D+16.4 · modeled estimate
Runner-up · Barack Obama, 2008 · 49.9%
Republican
Dwight D. Eisenhower1956
73.3%
6,689 votes · R+46.5 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 72.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
5,615votes
47.5% of the vote · R+3.8 · modeled estimate
Runner-up · Kamala Harris, 2024 · 5,119 votes
Republican
Ronald Reagan1984
7,409votes
70.6% of the vote · R+41.5 · modeled estimate
Runner-up · Richard Nixon, 1972 · 7,011 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
Al Gore2000
−0.3pts D vs U.S.
Place D+0.2 · U.S. D+0.5 · modeled estimate
Runner-up · Barack Obama, 2012 · −4.7 pts
Republican
Herbert Hoover1932
+35.3pts R vs U.S.
Place R+17.6 · U.S. D+17.8 · modeled estimate
Runner-up · William McKinley, 1896 · +33.2 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 | 58.3%5,486 | 41.7%3,922 | 9,408 |
| 2018 | D | 60.8%5,016 | 39.2%3,229 | 8,245 |
Despite Connecticut's overall Democratic lean, this state house district backed the Republican presidential candidate by 11.5 points in 2024, signaling a constituency that diverges notably from statewide voting patterns.
Across the recorded series it reached a Democratic high of 16.4 points in 1964 and a Republican high of 46.5 points in 1956. Between 2020 and 2024 the district moved 7.8 points toward the Republican candidate; the 2024 margin was 11.5 points.
A population of 23,379, a 70% non-Hispanic-white share, and a median household income of $93,140 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 85 and State House District 78.
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 99th State House District. Akashic. https://akashic.app/sld-lower/09099/. Accessed May 20, 2026. License: CC BY 4.0.