Seattle-Tacoma · how this place’s counties split between candidates in each party’s presidential nominating contest, cycle by cycle. A primary is a contest inside one party, so it has no Democratic–Republican margin and is not part of the general-election record above.
Akashic reports votes cast, not delegates awarded. The two can disagree: Clinton led the 2008 national primary popular vote by less than half a point and did not win the nomination.
Primary returns are published at county grain and there is no roll-up above it. Each cell counts how many of this place’s counties a candidate led — a count of records, not a vote total. Who led the place as a whole is not knowable from these returns, because county rows carry a leader and a lead but no per-candidate votes.
Presidential nominating contests in Seattle-Tacoma, by party and cycle.
○no contest record — Akashic holds no result for that party and cycle here. It is not a claim that no contest was held. Telling apart a contest that was cancelled, one that went uncontested, and one simply not yet ingested needs a nominating-contest calendar, which is a separate ingest from results and does not exist yet.
Republican presidential primaries are not yet ingested — the Republican series runs from 1856 and is in scope. The row is kept so its absence is visible: a Democratic-only panel would otherwise read as though no one else held a contest.
Akashic carries 10 states for 2012 and 3 states for 2024. Cycles in which an incumbent president seeks renomination are thin by nature — few states run a contested primary — so a sparse column is politics, not a hole in the record.
County returns carry a leader and a lead over the runner-up, and nothing more. The full candidate field with vote shares is published at state grain — follow a cycle above to the state contest for it.
voter registration
Registered voters
Total registered voters, over time
Registered voters
Voter registration in Seattle-Tacoma
Year
Total registered
2016
3,440,051
2018
3,531,642
2020
3,819,699
2022
3,838,645
2024
4,036,586
domestic migration
Who moves in and out
Net domestic migration over time
+1,557 net domestic migration · 2025
20112025
Net +172,102 over 2011–2025 · gain loss
Domestic migration in Seattle-Tacoma in Seattle-Tacoma: net domestic migration by year
Year
Net domestic migration
2011
+20,995
2012
+12,054
2013
+12,283
2014
+19,429
2015
+29,917
2016
+50,065
2017
+42,965
2018
+28,784
2019
+20,750
2021
−24,185
2022
−16,405
2023
−23,686
2024
−2,421
2025
+1,557
King County's presidential margins have widened steadily since 2000 as the Seattle metro absorbed waves of highly educated in-migrants, while Pierce County to the south continues to post noticeably closer results, anchoring competitive state legislative districts.
Across the recorded series it reached a Democratic high of 36.9 points in 1936 and a Republican high of 52.5 points in 1904. Between 2020 and 2024 the market moved 0.7 points toward the Republican candidate; the 2024 margin was 28.5 points.
A population of 5,596,124, a 61% non-Hispanic-white share, and a median household income of $108,368 describe the market. The market's voting pattern over the last decade is most similar to that of Portland, OR and San Francisco-Oakland-San Jose.
Akashic
Political twins — media markets
The media markets whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
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.
Seattle-Tacoma, Washington. Akashic. https://akashic.app/dma/819/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Embed this page
A live widget for your site — no API key, attribution built in, CC BY 4.0. All widgets & sizes →
In 2024, Seattle-Tacoma, Washington voted Democratic by 28.5 points (D+28.5), carried by the Democratic candidate. Out of 2,854,090 votes cast, 1,778,993 went Democratic and 964,260 went Republican.
When did Seattle-Tacoma, Washington last vote Republican?
The most recent presidential election in which Seattle-Tacoma, Washington voted Republican was 1984.
How many people live in Seattle-Tacoma, Washington?
Seattle-Tacoma, Washington has a population of 5,596,124 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Seattle-Tacoma, Washington?
Median household income in Seattle-Tacoma, Washington is $108,368 — above the national median of $80,734. The Washington state median is $98,141.
What is the political history of Seattle-Tacoma, Washington?
Akashic tracks 34 presidential elections in Seattle-Tacoma, Washington from 1892 to 2024. Of those, 19 went Democratic and 14 went Republican.
