Akashic
1892–2024
Akashic
Connecticut 15th State Senate District
presidential margin
2008D+23.82012D+25.62016D+14.22020D+15.22024D+6.5
full record · 2008 → 2024
D+6.5
2024
median income$55,225U.S. $80,734 · CT $95,781
median age37.9U.S. 39.1 · CT 41.2
poverty rate23.0%U.S. 12.5% · CT 10.0%
bachelor’s+ (25+)39.2%U.S. 35.6% · CT 42.5%
non-english22.6%U.S. 22.3% · CT 23.4%
race · ethnicity · ancestry
Italian13.8%
Irish10.4%
German5.2%
Puerto Rican19.3%
Mexican4.4%
Dominican3.1%
African American†14.4%
Jamaican1.8%
African1.1%
Chinese0.6%
Asian Indian0.4%
Filipino0.2%
religion

Religious adherence is published only at the county level (U.S. Religion Census). See South Central Connecticut Planning Region.

American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.

Connecticut 15th State Senate District

Akashic
Connecticut 15th State Senate DistrictHarrisD+6.5
2024
2024 presidential margin for Connecticut 15th State Senate DistrictThe boundary of Connecticut 15th State Senate District, filled by its 2024 presidential margin (D+6.5), over faint outlines of the counties it is drawn from.Connecticut 15th State Senate District · D+6.5
How it voted
Share of the 2024 vote
Kamala Harris ✓Democratic52.6%17,404
Donald TrumpRepublican46.2%15,269
Jill SteinGreen1.2%393
D+60
R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 2 counties it's drawn from (shown faint).
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
County-level results (2 counties) — table
2024 presidential result by county for Connecticut 15th State Senate District — winner and D-vs-R margin.
CountyWinnerMargin
Naugatuck Valley Planning Region, CTDemocraticD+11.2
South Central Connecticut Planning Region, CTDemocraticD+11.9
5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
D
52.6%Harris17,404
46.2%Trump15,269
1.2%Stein393
+6.5%
33,066
D
57.0%Biden19,735
41.8%Trump14,484
1.1%Jorgensen393
+15.2%
34,612
D
55.4%Clinton17,763
41.3%Trump13,219
3.3%Johnson1,054
+14.2%
32,036
D
62.8%Obama21,040
37.2%Romney12,463
0.0%
+25.6%
33,503
D
61.2%Obama20,819
37.4%McCain12,716
1.4%Nader493
+23.8%
34,028
presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 2008 to 2024. Most recent: +6.5% in 2024.+6.5%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008+23.8%
2012+25.6%
2016+14.2%
2020+15.2%
2024+6.5%
DemocraticRepublican
current representation
Current officeholders
DJoan HartleyState Senate · 15

State legislative officeholder from OpenStates nightly current-legislator data.

Source · OpenStates current legislator CSV.

With a 2024 presidential margin of R+10.3, Connecticut Senate District 15 sits well outside the state's Democratic-leaning norm, signaling a suburban or exurban constituency that has consistently diverged from statewide trends.

Across the recorded series it reached a Democratic high of 25.6 points in 2012. Between 2020 and 2024 the district moved 8.7 points toward the Republican candidate; the 2024 margin was 6.5 points.

A population of 104,093, a 44% non-Hispanic-white share, and a median household income of $55,225 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 13 and State Senate District 17.

Political twins — state-senate districts

The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

State Senate District 13
Connecticut
88.3twin score
2008–2012 trajectoryPuerto Rican ancestry% unaffiliated≠ % White
State Senate District 17
Connecticut
86.8twin score
% unaffiliated2008–2020 trajectory≠ % Latino
State Senate District 10
Connecticut
81.9twin score
Puerto Rican ancestry% unaffiliated12-yr trend≠ 2008 margin

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.

Compare two places, side by side

Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →

Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Connecticut 15th State Senate District. Akashic. https://akashic.app/sld-upper/09015/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Places within Connecticut 15th State Senate District

counties it covers1
South Central Connecticut Planning Region

Frequently asked questions

How did Connecticut 15th State Senate District vote in 2024?
In 2024, Connecticut 15th State Senate District voted Democratic by 6.5 points (D+6.5), carried by the Democratic candidate. Out of 33,066 votes cast, 17,404 went Democratic and 15,269 went Republican.
How many people live in Connecticut 15th State Senate District?
Connecticut 15th State Senate District has a population of 104,093 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Connecticut 15th State Senate District?
Median household income in Connecticut 15th State Senate District is $55,225 — below the national median of $80,734. The Connecticut state median is $95,781.
What is the political history of Connecticut 15th State Senate District?
Akashic tracks 5 presidential elections in Connecticut 15th State Senate District from 2008 to 2024. Of those, 5 went Democratic and 0 went Republican.