akashic
1876–2024
Legislative (Senate) District 45·Washington

Washington 45th State Senate District has voted Democratic in ten straight presidential cycles.

A once-reliably red suburban corridor now decided by single digits

1876 — 2024·38 elections
WA
Latest
D+51
in 2024
Archetype
Democratic loyalist
since the recent cycles
Population
108,155
2024 ACS

Washington 45th State Senate District, Washington: Democratic loyalist district. In 2024, voted D+51%. Democratic peak: D+53 in 2020.

Key facts

2024 presidential margin
D+51MIT Election Lab
Political archetype
Democratic loyalistAkashic typology
Population
108,1552024 5-year
Median household income
$124,7462024 5-year
White (non-Hispanic)
54.7%2024 5-year
Black
6.6%2024 5-year
Hispanic / Latino
11.0%2024 5-year
Peak Democratic margin
D+53 in 2020MIT Election Lab
Peak Republican margin
R+52 in 1904MIT 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).
YearWonMarginDemocraticRepublicanTotal
D
+51.3%
39,37211,92653,459
D
+52.7%
42,90512,72857,242
D
+48.8%
33,96810,23048,633
D
+40.4%
31,58813,03745,965
D
+42.1%
30,65312,28143,601
D
+31.2%
27,44514,23642,310
D
+25.6%
22,54212,91837,556
D
+25.0%
19,75911,00935,045
D
+22.9%
18,49210,07236,818
D
+9.1%
16,53513,74130,688
R
−5.4%
14,12115,74630,229
R
−6.3%
11,11512,88928,380
R
−5.6%
11,76213,21126,014
R
−16.3%
10,04914,12525,048
D
+1.1%
10,56710,33022,459
D
+20.1%
12,6838,39821,310
R
−3.5%
9,87210,60020,845
R
−11.9%
7,91810,09618,264
R
−9.4%
7,8309,48217,580
D
+4.2%
6,7766,19713,791
D
+16.3%
7,8175,61413,553
D
+19.7%
6,7684,51611,434
D
+34.3%
6,5543,1479,933
D
+24.7%
5,1422,9958,702
R
−33.9%
2,2044,5526,936
R
−47.0%
3502,8585,341
R
−38.5%
8212,7705,066
D
+14.0%
2,4761,8424,526
O
+6.3%
9507373,372
R
−19.1%
6921,0541,891
R
−52.2%
2499661,373
R
−12.8%
369483891
D
+9.3%
366303676
R
−10.5%
235308698
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Demographics

Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
12.0%
English
11.0%
Irish
8.6%
Italian
3.4%
American
2.5%
Scottish
2.3%
French
2.2%
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: 37.4 in this county, 39.1 nationally
Male
Age
Female
0.6%
85+
1.1%
1.7%
75–84
2.2%
4.0%
65–74
4.4%
5.7%
55–64
5.6%
6.6%
45–54
6.2%
8.4%
35–44
7.7%
9.6%
25–34
8.7%
4.1%
18–24
4.0%
7.3%
5–17
7.0%
2.7%
<5
2.5%
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$124,746
Legislative (Senate) District 45 ranks near the middle of US counties.
Legislative (Senate) District 45$124,746
Washington$98,141
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
8.6%
Child poverty is below the national average.
Children under 189.7%
Working age (18–64)8.2%
Seniors (65+)10.1%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
68.9%
speak English only
Asian & Pacific Islander13.3%
Other Indo-European7.8%
Spanish7.1%
Other languages2.9%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Other Christian
15.6%
Catholic & Orthodox
13.2%
Non-Christian
3.3%
Mainline Protestant
2.6%
Pentecostal & Holiness
2.3%
Baptist
1.1%
Methodist
0.9%
Source · 2020 US Religion Census. Remaining 61.0% of residents not counted as adherents by any reporting body.

Washington's 45th Senate District, anchored in the Issaquah-Sammamish suburbs east of Lake Washington, has trended competitive as tech-sector growth reshaped its demographics, making it a reliable bellwether for shifts across the Eastside.

The Democratic margin in Washington 45th State Senate District reached its widest at fifty-three points in 2020. The margin in 2024 was fifty-one points — still decisive.

Its loyalty is rooted in its place. Median household income of $124,746, a 55% non-Hispanic-white share, and a population of 108,155 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.
Legislative (Senate) District 45, Washington. Akashic. https://akashic.app/sld-upper/53045/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did Legislative (Senate) District 45, Washington vote in 2024?
In 2024, Legislative (Senate) District 45, Washington voted Democratic by 51.3 points (D+51), carried by the Democratic candidate. Out of 53,459 votes cast, 39,372 went Democratic and 11,926 went Republican.
What is Legislative (Senate) District 45, Washington's political archetype?
Akashic classifies Legislative (Senate) District 45, Washington as a "Democratic loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 19 times, Republican 14 times, and other 1 times.
When did Legislative (Senate) District 45, Washington last vote Republican?
The most recent presidential election in which Legislative (Senate) District 45, Washington voted Republican was 1984.
How many people live in Legislative (Senate) District 45, Washington?
Legislative (Senate) District 45, Washington has a population of 108,155 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 45, Washington?
Median household income in Legislative (Senate) District 45, Washington is $124,746 — above the national median of $80,734. The Washington state median is $98,141.
What is the political history of Legislative (Senate) District 45, Washington?
Akashic tracks 38 presidential elections in Legislative (Senate) District 45, Washington from 1876 to 2024. Of those, 19 went Democratic and 14 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.