Akashic
1892–2024
Akashic
Connecticut 31st State Senate District
presidential margin
2008D+15.42012D+10.02016R+10.22020R+3.12024R+8.1
full record · 2008 → 2024
R+8.1
2024
median income$84,926U.S. $80,734 · CT $95,781
median age40.1U.S. 39.1 · CT 41.2
poverty rate9.0%U.S. 12.5% · CT 10.0%
bachelor’s+ (25+)41.3%U.S. 35.6% · CT 42.5%
non-english22.7%U.S. 22.3% · CT 23.4%
race · ethnicity · ancestry
Italian17.8%
Irish17.6%
English11.4%
Puerto Rican7.3%
Dominican1.0%
Mexican0.8%
African American†2.5%
Jamaican1.1%
African0.2%
Asian Indian1.0%
Chinese0.4%
Vietnamese0.2%
religion

Religious adherence is published only at the county level (U.S. Religion Census). See Northwest Hills Planning Region.

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

Connecticut 31st State Senate District

Akashic
Connecticut 31st State Senate DistrictTrumpR+8.1
2024
2024 presidential margin for Connecticut 31st State Senate DistrictThe boundary of Connecticut 31st State Senate District, filled by its 2024 presidential margin (R+8.1), over faint outlines of the counties it is drawn from.Connecticut 31st State Senate District · R+8.1
How it voted
Share of the 2024 vote
Donald Trump ✓Republican53.4%27,032
Kamala HarrisDemocratic45.3%22,941
Jill SteinGreen1.4%689
D+60
R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 4 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 (4 counties) — table
2024 presidential result by county for Connecticut 31st State Senate District — winner and D-vs-R margin.
CountyWinnerMargin
Capitol Planning Region, CTDemocraticD+20.1
Naugatuck Valley Planning Region, CTDemocraticD+11.2
Northwest Hills Planning Region, CTRepublicanR+5.4
Western Connecticut Planning Region, CTDemocraticD+18.0
5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
R
45.3%Harris22,941
53.4%Trump27,032
1.4%Stein689
−8.1%
50,662
R
47.6%Biden24,710
50.7%Trump26,345
1.8%Jorgensen911
−3.1%
51,966
R
42.7%Clinton19,811
52.9%Trump24,536
4.4%Johnson2,042
−10.2%
46,389
D
55.0%Obama23,474
45.0%Romney19,218
0.0%
+10.0%
42,692
D
56.9%Obama26,186
41.5%McCain19,104
1.6%Nader750
+15.4%
46,040
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: −8.1% in 2024.flipped R · 2016−8.1%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008+15.4%
2012+10.0%
2016−10.2%
2020−3.1%
2024−8.1%
DemocraticRepublican
current representation
Current officeholders
RHenri MartinState Senate · 31

State legislative officeholder from OpenStates nightly current-legislator data.

Source · OpenStates current legislator CSV.

With a 2024 presidential margin exceeding 24 points Democratic, this district of roughly 100,000 residents sits well outside competitive territory, making it a reliable benchmark for gauging the party's urban coalition strength in the state.

Across the recorded series it reached a Democratic high of 15.4 points in 2008 and a Republican high of 10.2 points in 2016. Between 2020 and 2024 the district moved 4.9 points toward the Republican candidate; the 2024 margin was 8.1 points.

A population of 99,747, a 80% non-Hispanic-white share, and a median household income of $84,926 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 19 and State Senate District 35.

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 19
Connecticut
91.5twin score
elasticity2008 marginItalian ancestry
State Senate District 35
Connecticut
90.7twin score
elasticity% unaffiliatedPolish ancestry≠ Puerto Rican ancestry
State Senate District 16
Connecticut
85.4twin score
elasticityItalian ancestryPuerto Rican ancestry≠ % unaffiliated

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 31st State Senate District. Akashic. https://akashic.app/sld-upper/09031/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Places within Connecticut 31st State Senate District

counties it covers1
Northwest Hills Planning Region

Frequently asked questions

How did Connecticut 31st State Senate District vote in 2024?
In 2024, Connecticut 31st State Senate District voted Republican by 8.1 points (R+8.1), carried by the Republican candidate. Out of 50,662 votes cast, 22,941 went Democratic and 27,032 went Republican.
When did Connecticut 31st State Senate District last vote Democratic?
The most recent presidential election in which Connecticut 31st State Senate District voted Democratic was 2012.
How many people live in Connecticut 31st State Senate District?
Connecticut 31st State Senate District has a population of 99,747 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Connecticut 31st State Senate District?
Median household income in Connecticut 31st State Senate District is $84,926 — above the national median of $80,734. The Connecticut state median is $95,781.
What is the political history of Connecticut 31st State Senate District?
Akashic tracks 5 presidential elections in Connecticut 31st State Senate District from 2008 to 2024. Of those, 2 went Democratic and 3 went Republican.