Washington State Senate District 18
Next vote Tue, Nov 3, 2026 · Represented by Adrian Cortes Democratic · Member list as of Oct 28
This seat has no race on the official 2026 list.
- Last election
- Adrian Cortes (Democratic) won by 0.2 points, 2024
- Earlier results
- Ann Rivers (Republican) won by 15.8 points, 2020, older linesAnn Rivers (Republican) won by 27.6 points, 2016, older linesAll 15 elections
Past results
- Votes for listed candidates
- 84,114
- Election day
- November 5, 2024
- District map
- Same as today
Washington Senate District 18, 1968 to 2024, 2024, every candidate Candidate Party Votes and share Share DemocraticAdrian CortesWon Democratic 42,04750.0% RepublicanBrad Benton Republican 41,87849.8% Scattered write-ins Write-in 1890.2% - Votes for listed candidates
- 94,615
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
Washington Senate District 18, 1968 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanAnn RiversWon(incumbent) Republican 53,26956.3% DemocraticRick Bell Democratic 38,30540.5% Scattered write-ins Write-in 3,0413.2% - Votes for listed candidates
- 71,015
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
Washington Senate District 18, 1968 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanAnn RiversWon(incumbent) Republican 45,31663.8% DemocraticEric K. Holt Democratic 25,69936.2% - Votes for listed candidates
- 63,254
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
Washington Senate District 18, 1968 to 2024, 2012, every candidate Candidate Party Votes and share Share RepublicanAnn RiversWon Republican 42,92467.9% DemocraticRalph Schmidt Democratic 20,33032.1%
- 2024: MEDSL 2024 official precinct returns (individual_states zips), retrieved Oct 28, 2026. Compiled by MIT Election Data and Science Lab (MEDSL) from official returns; not an official source
- 1968 to 2020: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), retrieved Oct 28, 2026. Compiled by Carl Klarner (Harvard Dataverse) from official returns; not an official source
Only part of this chamber is up in a given cycle. Which districts vote on which date is not on file. Last contest in this district on file: 2024.
All elections (15 for this seat)
- Votes for listed candidates
- 84,114
- Election day
- November 5, 2024
- District map
- Same as today
Washington Senate District 18, 1968 to 2024, 2024, every candidate Candidate Party Votes and share Share DemocraticAdrian CortesWon Democratic 42,04750.0% RepublicanBrad Benton Republican 41,87849.8% Scattered write-ins Write-in 1890.2% - Votes for listed candidates
- 94,615
- Election day
- November 3, 2020
- District map
- Older district map (2012 to 2021)
Washington Senate District 18, 1968 to 2024, 2020, every candidate Candidate Party Votes and share Share RepublicanAnn RiversWon(incumbent) Republican 53,26956.3% DemocraticRick Bell Democratic 38,30540.5% Scattered write-ins Write-in 3,0413.2% - Votes for listed candidates
- 71,015
- Election day
- November 8, 2016
- District map
- Older district map (2012 to 2021)
Washington Senate District 18, 1968 to 2024, 2016, every candidate Candidate Party Votes and share Share RepublicanAnn RiversWon(incumbent) Republican 45,31663.8% DemocraticEric K. Holt Democratic 25,69936.2% - Votes for listed candidates
- 63,254
- Election day
- November 6, 2012
- District map
- Older district map (2012 to 2021)
Washington Senate District 18, 1968 to 2024, 2012, every candidate Candidate Party Votes and share Share RepublicanAnn RiversWon Republican 42,92467.9% DemocraticRalph Schmidt Democratic 20,33032.1% - Votes for listed candidates
- 71,438
- Election day
- November 4, 2008
- District map
- Older district map (2002 to 2011)
Washington Senate District 18, 1968 to 2024, 2008, every candidate Candidate Party Votes and share Share RepublicanJoseph ZarelliWon(incumbent) Republican 39,31155.0% DemocraticJon Haugen Democratic 32,12745.0% - Votes for listed candidates
- 64,451
- Election day
- November 2, 2004
- District map
- Older district map (2002 to 2011)
Washington Senate District 18, 1968 to 2024, 2004, every candidate Candidate Party Votes and share Share RepublicanJoseph ZarelliWon(incumbent) Republican 34,70653.9% DemocraticDavid L. Seabrook Democratic 29,74546.1% - Votes for listed candidates
- 55,133
- Election day
- November 7, 2000
- District map
- Older district map (1992 to 2001)
Washington Senate District 18, 1968 to 2024, 2000, every candidate Candidate Party Votes and share Share RepublicanJoseph ZarelliWon(incumbent) Republican 32,28958.6% DemocraticKent Landerholm Democratic 22,84441.4% - Votes for listed candidates
- 47,716
- Election day
- November 5, 1996
- District map
- Older district map (1992 to 2001)
Washington Senate District 18, 1968 to 2024, 1996, every candidate Candidate Party Votes and share Share RepublicanJoseph ZarelliWon Republican 25,67353.8% DemocraticTed Thomas Democratic 22,04346.2% - Votes for listed candidates
- 44,473
- Election day
- November 3, 1992
- District map
- Older district map (1992 to 2001)
Washington Senate District 18, 1968 to 2024, 1992, every candidate Candidate Party Votes and share Share RepublicanLinda SmithWon(incumbent) Republican 25,79358.0% DemocraticGrohs Democratic 18,68042.0% - Votes for listed candidates
- 34,283
- Election day
- November 8, 1988
- District map
- Older district map (1982 to 1991)
Washington Senate District 18, 1968 to 2024, 1988, every candidate Candidate Party Votes and share Share RepublicanLinda SmithWon Republican 20,88460.9% DemocraticSiipola Democratic 13,39939.1% - Votes for listed candidates
- 32,219
- Election day
- November 6, 1984
- District map
- Older district map (1982 to 1991)
Washington Senate District 18, 1968 to 2024, 1984, every candidate Candidate Party Votes and share Share DemocraticAlan ThompsonWon Democratic 19,57160.7% RepublicanBumala Republican 12,64839.3% - Votes for listed candidates
- 27,876
- Election day
- November 4, 1980
- District map
- Older district map (1972 to 1981)
Washington Senate District 18, 1968 to 2024, 1980, every candidate Candidate Party Votes and share Share DemocraticDon TalleyWon(incumbent) Democratic 17,97564.5% RepublicanRobert L. Engleman Republican 9,90135.5% - Votes for listed candidates
- 20,478
- Election day
- November 2, 1976
- District map
- Older district map (1972 to 1981)
Washington Senate District 18, 1968 to 2024, 1976, every candidate Candidate Party Votes and share Share DemocraticDon TalleyWon(incumbent) Democratic 20,478100.0% - Votes for listed candidates
- 27,250
- Election day
- November 7, 1972
- District map
- Older district map (1972 to 1981)
Washington Senate District 18, 1968 to 2024, 1972, every candidate Candidate Party Votes and share Share DemocraticDon TalleyWon(incumbent) Democratic 20,11673.8% RepublicanJohn C. Freed Republican 7,13426.2% - Votes for listed candidates
- 26,263
- Election day
- November 5, 1968
- District map
- Older district map (1966 to 1971)
Washington Senate District 18, 1968 to 2024, 1968, every candidate Candidate Party Votes and share Share DemocraticDon TalleyWon(incumbent) Democratic 14,20554.1% RepublicanRobert B. Arkell Republican 12,05845.9%
- 2024: MEDSL 2024 official precinct returns (individual_states zips), retrieved Oct 28, 2026. Compiled by MIT Election Data and Science Lab (MEDSL) from official returns; not an official source
More about this seat
District map
- Democratic
- Republican
- Independent
- Nonpartisan
- More than one party
- No member listed
Map settings
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Cite this page
Election Wrld. (2026). Washington State Senate District 18, election results 1968 to 2024. https://www.electionwrld.com/wa/senate/18. Retrieved October 31, 2026.
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<p style="font-size:13px">Data: <a href="https://www.electionwrld.com">Election Wrld</a>, CC BY 4.0</p>Sources
Sources: Census TIGERweb Legislative MapServer (120th CDs layer 0, 119th CDs layer 4, 2026 SLD upper layer 1 and lower layer 2) (US Census Bureau, public domain), retrieved Oct 28, 2026; Open Civic Data division identifiers (census_autogenerated us_sldl/us_sldu and openstates state files); also (sld-recent.json): Open Civic Data division identifiers (country-us) (CC0 (repository); also (sld-recent.json): CC0 1.0), retrieved Oct 28, 2026; Open States people (current) CSVs (CC0-1.0 (Open States people data)), retrieved Oct 28, 2026, compiled by Open States volunteers and staff (rosters from state legislature sites) from official returns, not an official source; MEDSL 2024 official precinct returns (individual_states zips) (Not stated in the GitHub repository (an earlier label said "MIT (repo)", which the repository does not support). MEDSL's Harvard Dataverse records are CC0 1.0, but these GitHub files were not checksum-matched to the Dataverse files, so CC0 is not claimed for them.), retrieved Oct 28, 2026, compiled by MIT Election Data and Science Lab (MEDSL) from official returns, not an official source; State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse) (CC0 1.0), retrieved Oct 28, 2026, compiled by Carl Klarner (Harvard Dataverse) from official returns, not an official source.
DataState data (JSON)Sources: State Legislative Election Returns, 1967-2022 (Carl Klarner, Harvard Dataverse), MEDSL 2024 official precinct returnsData as of Oct 28, 2026