Legislative (Senate) District 20 State Senate District (WA) — Elections 1876–2024

Washington 20th State Senate District, Washington: Bellwether district. In 2024, voted R+3%. Republican peak: R+54 in 1904.

Key facts

2024 presidential margin: R+3MIT Election Lab
Political archetype: BellwetherAkashic typology
Population: 463,3552024 5-year
Median household income: $90,3242024 5-year
White (non-Hispanic): 77.6%2024 5-year
Black: 1.8%2024 5-year
Hispanic / Latino: 11.8%2024 5-year
Peak Democratic margin: D+38 in 1964MIT Election Lab
Peak Republican margin: R+54 in 1904MIT Election Lab

2024 results by constituent county

4 counties · 2 D · 2 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	R	−3.2%	115,469	123,469	247,335
2020	R	−4.1%	114,800	124,865	247,559
2016	R	−7.0%	77,791	91,013	189,608
2012	R	−1.7%	84,470	87,473	177,627
2008	D	+3.8%	87,885	81,365	172,656
2004	R	−7.1%	73,620	84,989	161,107
2000	R	−6.1%	59,603	67,826	134,145
1996	D	+6.0%	54,118	47,148	116,111
1992	D	+3.9%	43,993	39,626	112,859
1988	D	+0.6%	43,714	43,152	88,102
1984	R	−10.5%	39,309	48,712	89,576
1980	R	−8.8%	33,634	41,025	83,709
1976	D	+3.0%	37,410	35,176	75,566
1972	R	−9.0%	31,482	38,073	73,183
1968	D	+6.7%	30,782	26,656	61,346
1964	D	+38.3%	40,640	18,050	58,941
1960	R	−3.0%	28,309	30,064	58,548
1956	R	−4.9%	27,363	30,215	57,666
1952	R	−9.9%	25,091	30,615	56,067
1948	D	+12.5%	25,407	19,556	46,785
1944	D	+14.0%	25,359	19,068	44,867
1940	D	+16.2%	23,971	17,208	41,649
1936	D	+36.1%	23,095	10,345	35,365
1932	D	+22.5%	16,258	9,519	29,992
1928	R	−37.2%	7,475	16,504	24,292
1924	R	−39.2%	3,102	11,147	20,516
1920	R	−31.3%	4,075	9,470	17,230
1916	R	−10.4%	6,582	8,320	16,637
1912	O	−3.4%	4,146	4,677	15,447
1908	R	−33.4%	2,329	5,140	8,415
1904	R	−54.3%	1,263	5,118	7,098
1900	R	−20.8%	2,179	3,396	5,853
1896	D	+1.4%	2,985	2,904	5,982
1892	R	−8.6%	1,813	2,287	5,489
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

16.4%

English

13.3%

Irish

10.4%

American

5.9%

Italian

2.8%

Scottish

2.7%

French

2.5%

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: 40.0 in this county, 39.1 nationally

Male

Age

Female

0.7%

85+

1.1%

2.4%

75–84

2.8%

5.2%

65–74

5.7%

6.3%

55–64

6.5%

6.3%

45–54

6.1%

6.7%

35–44

6.7%

6.8%

25–34

6.6%

4.0%

18–24

3.7%

8.6%

5–17

8.2%

2.8%

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

Median household income

2024 inflation-adjusted dollars

$90,324

Legislative (Senate) District 20 ranks near the middle of US counties.

Legislative (Senate) District 20$90,324

Washington$98,141

United States$80,734

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

Poverty rate

All persons below federal poverty line

9.4%

Child poverty is below the national average.

Children under 1810.8%

Working age (18–64)9.0%

Seniors (65+)9.2%

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

Language at home

Population aged 5 and older

86.4%

speak English only

Spanish6.5%

Other Indo-European3.7%

Asian & Pacific Islander2.9%

Other languages0.5%

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Other Christian

24.1%

Catholic & Orthodox

6.6%

Pentecostal & Holiness

3.3%

Mainline Protestant

2.2%

Baptist

1.1%

Methodist

0.6%

Non-Christian

0.4%

Source · 2020 US Religion Census. Remaining 61.8% of residents not counted as adherents by any reporting body.

Centered in the Columbia Basin, this district delivered a 27-point margin in 2024, reflecting the region's rural, agricultural character and voting patterns consistent with other Eastern Washington constituencies.

The Democratic margin in Washington 20th State Senate District has rarely exceeded thirty-eight points in modern history; the Republican margin has rarely exceeded fifty-four points. 2024 delivered the district to the Republican candidate by three points.

Its demographics resemble the country more than they resemble most districts. A 78% non-Hispanic-white share, a 9% poverty rate, and a median household income of $90,324 — all within the broad national range.

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Cite this page

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

Legislative (Senate) District 20, Washington. Akashic. https://akashic.app/sld-upper/53020/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

Frequently asked questions

How did Legislative (Senate) District 20, Washington vote in 2024?

In 2024, Legislative (Senate) District 20, Washington voted Republican by 3.2 points (R+3), carried by the Republican candidate. Out of 247,335 votes cast, 115,469 went Democratic and 123,469 went Republican.

What is Legislative (Senate) District 20, Washington's political archetype?

Akashic classifies Legislative (Senate) District 20, Washington as a "Bellwether" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 13 times, Republican 20 times, and other 1 times.

When did Legislative (Senate) District 20, Washington last vote Democratic?

The most recent presidential election in which Legislative (Senate) District 20, Washington voted Democratic was 2008.

How many people live in Legislative (Senate) District 20, Washington?

Legislative (Senate) District 20, Washington has a population of 463,355 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in Legislative (Senate) District 20, Washington?

Median household income in Legislative (Senate) District 20, Washington is $90,324 — above the national median of $80,734. The Washington state median is $98,141.

What is the political history of Legislative (Senate) District 20, Washington?

Akashic tracks 38 presidential elections in Legislative (Senate) District 20, Washington from 1876 to 2024. Of those, 13 went Democratic and 20 went Republican. The district's archetype — "Bellwether" — captures the overall trajectory of that voting record.

Washington 20th State Senate District votes the way the country votes.

Key facts

Demographics

Compare two places, side by side

Frequently asked questions