Top-two primary
All candidates run in one primary regardless of party and the two with the most votes advance, so two candidates of the same party can meet in November. The forecast then marks the seat as safe for that party.
Washington › Washington State Senate · November 3, 2026 · Updated Oct 16, 2026
Washington Legislative District 48
Top twoVandana Slatter has no major-party opponent.
Vandana Slatter has no major-party opponent.
How this race is decided
Staggered Senate
Senators serve four-year terms; about half the seats are on the ballot each election.
The candidates
DemocraticIncumbent
Vandana Slatter
- Experience
- State legislature
The district
Lean D+48: how much more Democratic or Republican than the nation it votes for president.
Presidential vote
Precinct results re-aggregated to the current district lines.
Who lives here
- Population
- 152,589
- People per km²
- 1,466
- Adults with a B.A.+
- 74%
- White, no degree
- 15%of adults
- White 45%
- Hispanic 7%
- Black 2%
- Asian 40%
- Other / multiracial 7%
American Community Survey 2020–2024, aggregated from census tracts.
Past results
Results in the same-numbered district; earlier elections may have used different lines.
2025
29,094 votes · Uncontested by the other party✓ Vandana Slatter (D)58.0%
Amy Walen (D)40.7%
Write-ins (—)1.3%
2024 President Vote in this district
59,928 two-party votes · D+47.0 · D+48.5 vs. the nation✓ Kamala Harris (D)73.5%
Donald Trump (R)26.5%
2022 Earlier district lines
47,053 votes · D+41.3✓ Patty Kuderer (D)70.6%
Michelle Darnell (R)29.3%
2020 President Vote in this district
74,775 two-party votes · D+49.6 · D+45.1 vs. the nation✓ Joe Biden (D)74.8%
Donald Trump (R)25.2%
2018 Earlier district lines
52,366 votes · Uncontested by the other party✓ Patty Kuderer (D)64.0%
Rodney Tom (D)34.4%
Writein (—)1.5%
2016 President Vote in this district
53,539 two-party votes · D+46.0 · D+43.8 vs. the nation✓ Hillary Clinton (D)73.0%
Donald Trump (R)27.0%