Connecticut 12th State Senate District, Connecticut: Democratic loyalist district. In 2024, voted D+12%. Democratic peak: D+38 in 1964.
Key facts
- 2024 presidential margin
- D+12MIT Election Lab
- Political archetype
- Democratic loyalistAkashic typology
- Population
- 139,8632024 5-year
- Median household income
- $90,7552024 5-year
- White (non-Hispanic)
- 65.8%2024 5-year
- Black
- 11.6%2024 5-year
- Hispanic / Latino
- 17.4%2024 5-year
- Peak Democratic margin
- D+38 in 1964MIT Election Lab
- Peak Republican margin
- R+30 in 1896MIT Election Lab
Constituent county margins for State Senate District 12, CTOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 37,440 | 29,303 | 67,992 | ||
| D | 40,905 | 28,899 | 70,809 | ||
| D | 34,134 | 27,200 | 63,963 | ||
| D | 36,135 | 23,980 | 60,786 | ||
| D | 39,014 | 24,419 | 64,262 | ||
| D | 33,604 | 26,862 | 61,603 | ||
| D | 32,706 | 21,045 | 57,180 | ||
| D | 29,276 | 17,852 | 54,277 | ||
| D | 26,651 | 22,453 | 63,435 | ||
| R | 26,743 | 28,497 | 55,987 | ||
| R | 22,650 | 34,209 | 57,104 | ||
| R | 21,094 | 26,705 | 54,454 | ||
| R | 25,242 | 27,835 | 53,447 | ||
| R | 21,473 | 31,564 | 53,701 | ||
| D | 24,588 | 20,729 | 48,852 | ||
| D | 33,285 | 15,112 | 48,433 | ||
| D | 27,810 | 21,552 | 49,363 | ||
| R | 16,701 | 28,927 | 45,628 | ||
| R | 20,090 | 25,098 | 45,347 | ||
| R | 17,970 | 18,253 | 37,157 | ||
| D | 18,084 | 16,408 | 34,752 | ||
| D | 18,235 | 15,496 | 33,805 | ||
| D | 16,954 | 11,716 | 30,070 | ||
| D | 12,572 | 12,012 | 25,683 | ||
| R | 11,661 | 12,338 | 24,199 | ||
| R | 5,257 | 10,467 | 17,811 | ||
| R | 5,524 | 9,875 | 16,151 | ||
| R | 4,510 | 4,628 | 9,506 | ||
| D | 3,411 | 2,966 | 8,551 | ||
| R | 3,312 | 5,008 | 8,699 | ||
| R | 3,298 | 4,912 | 8,627 | ||
| R | 3,705 | 4,430 | 8,299 | ||
| R | 2,354 | 4,459 | 7,045 | ||
| — | — | — | — | ||
| D | 3,432 | 3,186 | 6,792 | ||
| D | 3,067 | 2,767 | 5,835 | ||
| D | 2,928 | 2,750 | 5,678 | ||
| D | 2,653 | 2,374 | 5,027 |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
Italian
18.7%
Irish
14.9%
English
8.0%
German
7.8%
Polish
6.3%
French
3.2%
American
3.2%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 41.6 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$90,755
State Senate District 12 ranks near the middle of US counties.
State Senate District 12$90,755
Connecticut$95,781
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
10.5%
Child poverty is below the national average.
Children under 1813.4%
Working age (18–64)9.8%
Seniors (65+)9.3%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
79.6%
speak English only
Spanish11.6%
Other Indo-European5.0%
Asian & Pacific Islander2.4%
Other languages1.4%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 66.1% of residents not counted as adherents by any reporting body.
With a 2024 presidential margin of D+32, this district anchors the deep-blue end of Connecticut's state senate map, likely reflecting dense urban settlement and a heavily Democratic voter registration base.
The Democratic margin in Connecticut 12th State Senate District reached its widest at thirty-eight points in 1964. The margin in 2024 was twelve points — still decisive.
Its loyalty is rooted in its place. Median household income of $90,755, a 66% non-Hispanic-white share, and a population of 139,863 together describe a district whose political habits are deeply settled.
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.
State Senate District 12, Connecticut. Akashic. https://akashic.app/sld-upper/09012/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Senate District 12, Connecticut vote in 2024?
In 2024, State Senate District 12, Connecticut voted Democratic by 12.0 points (D+12), carried by the Democratic candidate. Out of 67,992 votes cast, 37,440 went Democratic and 29,303 went Republican.
What is State Senate District 12, Connecticut's political archetype?
Akashic classifies State Senate District 12, Connecticut as a "Democratic loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 21 times, Republican 16 times, and other 0 times.
When did State Senate District 12, Connecticut last vote Republican?
The most recent presidential election in which State Senate District 12, Connecticut voted Republican was 1988.
How many people live in State Senate District 12, Connecticut?
State Senate District 12, Connecticut has a population of 139,863 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State Senate District 12, Connecticut?
Median household income in State Senate District 12, Connecticut is $90,755 — above the national median of $80,734. The Connecticut state median is $95,781.
What is the political history of State Senate District 12, Connecticut?
Akashic tracks 38 presidential elections in State Senate District 12, Connecticut from 1876 to 2024. Of those, 21 went Democratic and 16 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.