99chambers

U.S. House seat · lines in effect since 2022

Washington's 10th District

A district of about 788,000 people, 32% of adults with a bachelor's degree. It votes D+18.5 relative to the nation for president.

Marilyn Strickland (D) · since Jan 3, 2021Next election Nov 7, 2028The 2026 race →
WA-10

Source: 2026 results: Washington Secretary of State and civicAPI; boundaries: Census Bureau TIGER/LineUpdated Nov 7, 2026, 3:01 PM ET

Where it sits among all 435 seats

Every U.S. House seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.

D+18.5128th most
Democratic
Most DemocraticMost Republican218th seat · the majority line79126WA-108354

Labels below the bar mark 9 other seats in Washington.

Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Every race on these lines

Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.

2020202220242026
GovernorD+11.3No raceNo raceNo race
U.S. HouseNo raceD+14.1D+17.3D+27.5

Outlined: the race for this seat itselfBlank: no race that year

Source: 99chambers results archive: precinct results allocated to current lines; 2026: Washington Secretary of StateUpdated Nov 7, 2026, 3:01 PM ET

Who lives here, compared

Grey bars show the spread of all 435 seats. Small marks are other seats in Washington. The black marker is WA-10.

Adults with a bachelor's degree32% 42nd pct · 7th of 10 in WA

Lower than 58% of seats.

White adults without a degree43% 60th pct · 5th of 10 in WA

Higher than 60% of seats.

Hispanic residents14% 51st pct · 3rd of 10 in WA

Higher than 51% of seats.

Black residents7% 48th pct · 2nd of 10 in WA

Lower than 52% of seats.

Asian residents7% 77th pct · 5th of 10 in WA

Higher than 77% of seats.

People per square mile997 68th pct · 4th of 10 in WA

Denser than 68% of seats.

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET

Seats most like this one

Nearest seats on demographics, density and lean.

RI-1
38% college gradsD+24.0Held DNJ-1
36% college gradsD+20.3Held DMA-1
32% college gradsD+16.0Held DMA-3
23% Hispanic · 40% college gradsD+21.5Held D

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Who has held it

These lines took effect in 2022.

  1. Marilyn Strickland (D)
    2023– · Won 2022 by 14.1, 2024 by 17.3, 2026 by 27.5

Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)