State Senate District 18 State Senate District (CT) — Elections 1876–2024

Connecticut 18th State Senate District, Connecticut: Democratic loyalist district. In 2024, voted D+9%. Republican peak: R+41 in 1896.

Key facts

2024 presidential margin: D+9MIT Election Lab
Political archetype: Democratic loyalistAkashic typology
Population: 112,9312024 5-year
Median household income: $87,3192024 5-year
White (non-Hispanic): 75.5%2024 5-year
Black: 5.0%2024 5-year
Hispanic / Latino: 13.9%2024 5-year
Peak Democratic margin: D+40 in 1964MIT Election Lab
Peak Republican margin: R+41 in 1896MIT Election Lab

2024 results by constituent county

3 counties · 2 D · 1 R

R+60

D+60

One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.

38 presidential elections

Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
Year	Won	Margin	Democratic	Republican	Total
2024	D	+9.0%	30,849	25,695	57,551
2020	D	+12.8%	32,266	24,797	58,323
2016	D	+4.4%	25,441	23,181	51,673
2012	D	+17.4%	27,812	19,440	48,036
2008	D	+20.1%	30,932	20,463	52,118
2004	D	+12.5%	27,357	21,167	49,524
2000	D	+17.5%	25,146	17,180	45,490
1996	D	+20.7%	22,679	13,753	43,147
1992	D	+12.4%	20,679	14,577	49,235
1988	R	−3.5%	20,414	21,928	42,877
1984	R	−23.6%	16,136	26,156	42,500
1980	R	−10.3%	15,360	19,591	40,909
1976	R	−0.1%	19,391	19,429	39,062
1972	R	−25.2%	14,245	23,962	38,587
1968	D	+6.7%	17,606	15,283	34,849
1964	D	+39.6%	23,151	10,009	33,181
1960	D	+5.0%	17,444	15,773	33,218
1956	R	−22.3%	11,721	18,443	30,165
1952	R	−9.4%	13,454	16,252	29,770
1948	D	+3.8%	12,755	11,807	24,955
1944	D	+9.6%	12,612	10,398	23,127
1940	D	+9.5%	12,273	10,133	22,447
1936	D	+7.0%	10,753	9,309	20,662
1932	D	+0.8%	8,566	8,429	17,327
1928	R	−11.5%	7,201	9,086	16,399
1924	R	−31.4%	3,885	7,887	12,753
1920	R	−29.1%	4,025	7,462	11,830
1916	R	−1.0%	3,511	3,582	7,282
1912	D	+6.9%	2,886	2,428	6,686
1908	R	−21.9%	2,704	4,270	7,164
1904	R	−19.9%	2,927	4,417	7,503
1900	R	−19.2%	2,790	4,145	7,053
1896	R	−40.6%	1,477	3,742	5,583
1892	—	No data	—	—	—
1888	R	−3.3%	3,157	3,379	6,782
1884	R	−8.4%	2,748	3,251	5,998
1880	R	−10.9%	2,800	3,486	6,286
1876	R	−7.4%	2,788	3,235	6,022

Demographics

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

Irish

14.7%

Italian

13.3%

English

12.4%

German

9.6%

French

7.0%

Polish

6.5%

American

2.8%

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: 41.5 in this county, 39.1 nationally

Male

Age

Female

0.8%

85+

1.4%

2.6%

75–84

3.2%

5.5%

65–74

5.9%

7.2%

55–64

7.4%

5.8%

45–54

6.0%

35–44

6.0%

7.0%

25–34

6.2%

5.1%

18–24

4.4%

7.5%

5–17

7.1%

2.5%

2.3%

Source · American Community Survey 5-year estimates, 2024 release.

Median household income

2024 inflation-adjusted dollars

$87,319

State Senate District 18 ranks near the middle of US counties.

State Senate District 18$87,319

Connecticut$95,781

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

Poverty rate

All persons below federal poverty line

10.3%

Child poverty is below the national average.

Children under 1814.5%

Working age (18–64)9.4%

Seniors (65+)7.4%

Source · American Community Survey 5-year estimates, 2024 release.

Language at home

Population aged 5 and older

85.6%

speak English only

Spanish8.7%

Other Indo-European3.4%

Asian & Pacific Islander2.0%

Other languages0.4%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

20.4%

Other Christian

8.9%

Mainline Protestant

3.1%

Baptist

2.7%

Methodist

1.1%

Non-Christian

0.9%

Pentecostal & Holiness

0.8%

Source · 2020 US Religion Census. Remaining 62.1% of residents not counted as adherents by any reporting body.

With a 2024 presidential margin exceeding 50 points, this district ranks among the most reliably Democratic state senate seats in Connecticut, reflecting the dense urban concentration typical of such lopsided results.

The Democratic margin in Connecticut 18th State Senate District reached its widest at forty points in 1964. The margin in 2024 was nine points — still decisive.

Its loyalty is rooted in its place. Median household income of $87,319, a 76% non-Hispanic-white share, and a population of 112,931 together describe a district whose political habits are deeply settled.

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Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

State Senate District 18, Connecticut. Akashic. https://akashic.app/sld-upper/09018/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did State Senate District 18, Connecticut vote in 2024?

In 2024, State Senate District 18, Connecticut voted Democratic by 9.0 points (D+9), carried by the Democratic candidate. Out of 57,551 votes cast, 30,849 went Democratic and 25,695 went Republican.

What is State Senate District 18, Connecticut's political archetype?

Akashic classifies State Senate District 18, 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 18 times, Republican 19 times, and other 0 times.

When did State Senate District 18, Connecticut last vote Republican?

The most recent presidential election in which State Senate District 18, Connecticut voted Republican was 1988.

How many people live in State Senate District 18, Connecticut?

State Senate District 18, Connecticut has a population of 112,931 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 18, Connecticut?

Median household income in State Senate District 18, Connecticut is $87,319 — above the national median of $80,734. The Connecticut state median is $95,781.

What is the political history of State Senate District 18, Connecticut?

Akashic tracks 38 presidential elections in State Senate District 18, Connecticut from 1876 to 2024. Of those, 18 went Democratic and 19 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.

Connecticut 18th State Senate District has voted Democratic in nine straight presidential cycles.

Key facts

Demographics

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Frequently asked questions