State Senate District 20 State Senate District (IL) — Elections 1876–2024

Illinois 20th State Senate District, Illinois: Democratic loyalist district. In 2024, voted D+42%. Democratic peak: D+53 in 2008.

Key facts

2024 presidential margin: D+42MIT Election Lab
Political archetype: Democratic loyalistAkashic typology
Population: 58,3562024 5-year
Median household income: $83,4982024 5-year
White (non-Hispanic): 43.6%2024 5-year
Black: 22.2%2024 5-year
Hispanic / Latino: 26.8%2024 5-year
Peak Democratic margin: D+53 in 2008MIT Election Lab
Peak Republican margin: R+49 in 1920MIT Election Lab

2024 results by constituent county

1 counties · 1 D · 0 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	+41.6%	16,304	6,575	23,414
2020	D	+50.2%	19,436	6,287	26,187
2016	D	+53.1%	18,152	5,104	24,553
2012	D	+49.3%	16,763	5,580	22,689
2008	D	+53.4%	18,345	5,492	24,070
2004	D	+41.1%	16,213	6,727	23,079
2000	D	+40.0%	14,420	6,020	21,012
1996	D	+40.1%	12,987	5,198	19,444
1992	D	+30.0%	14,071	6,816	24,174
1988	D	+12.4%	12,725	9,894	22,817
1984	D	+2.6%	12,530	11,887	24,557
1980	D	+12.4%	12,664	9,646	24,359
1976	D	+8.7%	13,297	11,120	24,884
1972	R	−7.4%	11,974	13,900	26,025
1968	D	+9.5%	13,303	10,816	26,312
1964	D	+26.4%	17,310	10,087	27,397
1960	D	+13.0%	15,522	11,932	27,536
1956	R	−13.9%	11,011	14,563	25,640
1952	R	−0.7%	13,203	13,389	26,666
1948	D	+8.9%	13,701	11,439	25,291
1944	D	+15.9%	14,362	10,413	24,844
1940	D	+10.9%	13,155	10,568	23,815
1936	D	+27.5%	14,112	7,896	22,629
1932	D	+13.8%	10,352	7,772	18,741
1928	R	−6.2%	8,066	9,145	17,344
1924	R	−41.6%	2,547	7,759	12,541
1920	R	−49.0%	2,224	7,153	10,058
1916	R	−6.6%	4,273	4,906	9,571
1912	O	+13.0%	1,472	843	4,835
1908	R	−18.7%	1,723	2,595	4,674
1904	R	−32.1%	1,168	2,588	4,425
1900	R	−4.4%	2,097	2,295	4,517
1896	R	−18.4%	1,713	2,498	4,275
1892	D	+12.7%	1,628	1,253	2,943
1888	—	No data	—	—	—
1884	—	No data	—	—	—
1880	—	No data	—	—	—
1876	—	No data	—	—	—

Demographics

Race, ethnicity, and ancestry

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

German

9.0%

Irish

8.4%

Polish

7.0%

Italian

4.8%

English

3.6%

American

2.2%

French

0.9%

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: 38.0 in this county, 39.1 nationally

Male

Age

Female

0.7%

85+

1.3%

1.9%

75–84

2.7%

4.3%

65–74

5.1%

5.9%

55–64

6.2%

6.1%

45–54

6.2%

7.0%

35–44

7.0%

7.9%

25–34

8.0%

4.3%

18–24

4.4%

8.0%

5–17

7.7%

2.8%

2.7%

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

Median household income

2024 inflation-adjusted dollars

$83,498

State Senate District 20 ranks near the middle of US counties.

State Senate District 20$83,498

Illinois$83,390

United States$80,734

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

Poverty rate

All persons below federal poverty line

13.5%

Children face moderate poverty.

Children under 1817.9%

Working age (18–64)12.2%

Seniors (65+)14.0%

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

Language at home

Population aged 5 and older

64.2%

speak English only

Spanish21.1%

Other Indo-European8.3%

Asian & Pacific Islander4.3%

Other languages2.1%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

29.6%

Non-Christian

7.7%

Other Christian

6.4%

Baptist

4.8%

Mainline Protestant

2.9%

Pentecostal & Holiness

1.8%

Methodist

1.0%

Source · 2020 US Religion Census. Remaining 45.8% of residents not counted as adherents by any reporting body.

Illinois Senate District 20 covers a largely rural swath of downstate Illinois, where the 2024 presidential contest finished at R+9.1 — a margin reflecting the broader realignment of small-town and agricultural communities away from their traditional voting patterns.

The Democratic margin in Illinois 20th State Senate District reached its widest at fifty-three points in 2008. The margin in 2024 was forty-two points — still decisive.

Its loyalty is rooted in its place. Median household income of $83,498, a 44% non-Hispanic-white share, and a population of 58,356 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 20, Illinois. Akashic. https://akashic.app/sld-upper/17020/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did State Senate District 20, Illinois vote in 2024?

In 2024, State Senate District 20, Illinois voted Democratic by 41.6 points (D+42), carried by the Democratic candidate. Out of 23,414 votes cast, 16,304 went Democratic and 6,575 went Republican.

What is State Senate District 20, Illinois's political archetype?

Akashic classifies State Senate District 20, Illinois as a "Democratic loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 22 times, Republican 11 times, and other 1 times.

When did State Senate District 20, Illinois last vote Republican?

The most recent presidential election in which State Senate District 20, Illinois voted Republican was 1972.

How many people live in State Senate District 20, Illinois?

State Senate District 20, Illinois has a population of 58,356 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 20, Illinois?

Median household income in State Senate District 20, Illinois is $83,498 — above the national median of $80,734. The Illinois state median is $83,390.

What is the political history of State Senate District 20, Illinois?

Akashic tracks 38 presidential elections in State Senate District 20, Illinois from 1876 to 2024. Of those, 22 went Democratic and 11 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.

Illinois 20th State Senate District has voted Democratic in thirteen straight presidential cycles.

Key facts

Demographics

Compare two places, side by side

Frequently asked questions