How did WA-SD-15, Washington vote in the 2024 presidential election?

WA-SD-15, Washington voted Republican in 2024 with a margin of R+12.3. Kamala D Harris received 15,028 votes and Donald Trump received 19,401 out of 35,434 total votes cast, a 4.7-point shift toward Republicans from 2020.

What is WA-SD-15, Washington's political history?

WA-SD-15, Washington has 5 presidential elections on record, spanning 2008 to 2024. It has voted Republican in every presidential election since 2008. The largest single-election swing was 6.0 points in 2020.

What are the demographics of WA-SD-15, Washington?

WA-SD-15, Washington has a population of 156,689 according to the 2020 Census. The racial composition is 22.6% non-Hispanic white, 73.3% Hispanic.

Which places are most similar to WA-SD-15, Washington?

Based on demographic and electoral similarity analysis, the three most similar state senate districts to WA-SD-15, Washington are California State Senate District 14, Colorado State Senate District 13, Arizona State Senate District 23. Similarity is computed using a vector embedding of demographic, economic, and electoral characteristics.

Washington State Senate District 15

Washington · Latest: 2024↓ R+4.7 vs 2020

Leans Republican — shifted 4.7pp toward Republicans in 2024 — 157K residents

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Similarity Explorer

Similar state senate districts

Nearest neighbors matched on the same place-page feature set used across the dossier system.

8 visible matches

California State Senate District 14CA

Diverse urban competitive

D+4.0

Similarity score95%

Colorado State Senate District 13CO

Diverse urban competitive

R+11.5

Similarity score93%

Arizona State Senate District 23AZ

Diverse urban competitive

D+1.8

Similarity score93%

Kansas State Senate District 38KS

Diverse urban competitive

R+49.5

Similarity score92%

California State Senate District 16CA

Diverse urban competitive

R+8.9

Similarity score92%

Oklahoma State Senate District 44OK

Diverse urban competitive

R+32.5

Similarity score92%

New Mexico State Senate District 41NM

Diverse urban competitive

R+52.9

Similarity score91%

Arizona State Senate District 22AZ

Diverse urban competitive

D+21.1

Similarity score90%

Historian Query

Ask the Historian

Explore WA-SD-15's political evolution with the Historian

“How has Washington State Senate District 15 voted in presidential elections?”

Race & Ancestry

Who Lives Here

A race-first Census view with ancestry expansion where source coverage is strong enough to support detail.

WA-SD-15Census ACS 2024

Census race profile

Major Census race and ethnicity groups shown as a share of total population.

Expand rows for ancestry detail

Hispanic 73.3%White (Non-Hispanic) 22.6%Native American 2.5%Black 0.8%Asian 0.7%

Group	WA-SD-15	State	National
Hispanic / Latino	73.3%	14.4%	19.3%
White (Non-Hispanic)	22.6%	63.1%	57.4%
Native American / Alaska Native	2.5%	1.2%	0.9%
Black / African American	0.8%	4.0%	12.2%
Asian	0.7%	9.8%	6.0%
Native Hawaiian / Pacific Islander	0.1%	0.7%	0.2%

Method notes

Census treats race and Hispanic/Latino origin as separate questions. Race categories other than Hispanic reflect total populations (small Hispanic overlap in Black, Asian, AIAN, NHPI). “Multiracial / Other” is derived as a non-overlapping remainder.

Detailed ancestry data unavailable for this geography.

Who lives in Washington State Senate District 15? 156,689 residents as of the 2020 Census.

Demographic Comparison

Demographics

Read this geography's profile in three layers: local, state (where available), and national baseline.

WA-SD-15 vs Washington vs National157K residents

Population & electorate

Scale, voting-age share, and this geography's footprint inside the national electorate.

Total population

Local vs state vs U.S.

157K

local

157KState 7.8MNational 334.9M

Share of U.S. population

Local vs state vs U.S.

0.05%

local

0.05%National 100%

Voting-age population

Local vs state vs U.S.

67.2%

local

67.2%State 76.7%National 75.7%

Economic profile

Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.

Median household income

Local vs state vs U.S.

N/A

local

N/AState $101,109National $83,960

Poverty rate

Local vs state vs U.S.

N/A

local

N/AState 9.9%National 12.5%

College degree

Local vs state vs U.S.

N/A

local

N/AState 39.3%National 35.6%

Homeownership

Local vs state vs U.S.

N/A

local

N/AState 63.8%National 65.2%

Community profile

Age structure, language use, and nativity signals that explain how this geography differs from state and nation.

Median age

Local vs state vs U.S.

N/A

local

N/AState 38.5 yrsNational 39.1 yrs

Age 18–29

Local vs state vs U.S.

N/A

local

N/AState 15.7%National 15.7%

Age 65+

Local vs state vs U.S.

N/A

local

N/AState 16.6%National 17.0%

Foreign born

Local vs state vs U.S.

N/A

local

N/AState 15.4%National 14.1%

Non-English at home

Local vs state vs U.S.

N/A

local

N/AState 21.4%National 22.2%

English only

Local vs state vs U.S.

N/A

local

N/AState 78.6%National 77.8%

Voter Turnout

Turnout in WA-SD-15

Estimated using 2020 Census voting-age population.

2024 Turnout

33.6%

vs Previous

-57.5pp

Voting-Age Pop

105,371

History

2008–2024

Competitiveness

How competitive is WA-SD-15?

Lean RAvg margin: R+7.2 (last 3 elections)

2008

R+5.4

2012

R+2.9

2016

R+1.7

2020

R+7.7

2024

R+12.3

Elasticity

10.7pp

margin range

Party Flips

last 30 years

5-Elec Avg

R+6.0

Other Washington State Senate Districts

48 total

Name	Margin ↓
WA-SD-43	D+81.3
WA-SD-36	D+80.9
WA-SD-46	D+78.3
WA-SD-37	D+73.3
WA-SD-34	D+69.6
WA-SD-32	D+53.0
WA-SD-48	D+44.9
WA-SD-41	D+44.5
WA-SD-01	D+44.4
WA-SD-45	D+44.0
WA-SD-27	D+43.8
WA-SD-40	D+40.9
WA-SD-22	D+38.2
WA-SD-11	D+36.9
WA-SD-21	D+36.4
WA-SD-33	D+36.1
WA-SD-23	D+32.5
WA-SD-49	D+24.5
WA-SD-03	D+23.8
WA-SD-05	D+23.6
WA-SD-28	D+20.8
WA-SD-44	D+20.7
WA-SD-29	D+20.6
WA-SD-30	D+19.8
WA-SD-38	D+19.3

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