The 2018 United States Senate election in Washington took place on November 6, 2018, in order to elect a member of the

United States Senate The United States Senate is the upper chamber of the United States Congress, with the House of Representatives being the lower chamber. Together they compose the national bicameral legislature of the United States. The composition and pow ...

to represent the State of

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on ...

. Incumbent Democrat

Maria Cantwell Maria Ellen Cantwell (; born October 13, 1958) is an American politician and former businesswoman serving as the junior United States senator from Washington since 2001. A member of the Democratic Party, she previously served in the Washington ...

won re-election to a fourth term. As of 2023, this is the last time a Democrat running statewide for federal office has won

Pacific County Pacific County is a county in the U.S. state of Washington. As of the 2020 census, the population was 23,365. Its county seat is South Bend, and its largest city is Raymond. The county was formed by the government of Oregon Territory in Feb ...

Nonpartisan blanket primary

Candidates

The primary election featured 30 candidates, a near record amount for a U.S. Senate election in Washington.

Democratic Party

=Declared

= *

, incumbent Senator * Don L. Rivers * Clint Tannehill *George H. Kalberer *Mohammad Said

Republican Party

=Declared

= * Joey Gibson, activist and founder of

Patriot Prayer Patriot Prayer is a far-right group founded by Joey Gibson in 2016 and based in Vancouver, Washington, a suburban city in the Portland metropolitan area. Since 2016, the group has organized several dozen pro-gun, pro-Trump rallies held in liber ...

Goodspaceguy Michael George Goodspaceguy Nelson (born Michael George Nelson) is an American perennial candidate from Washington state. Early life and education Born Michael George Nelson in Minneapolis, Minnesota, Goodspaceguy received a B.A. from the Unive ...

perennial candidate A perennial candidate is a political candidate who frequently runs for elected office and rarely, if ever, wins. Perennial candidates' existence lies in the fact that in some countries, there are no laws that limit a number of times a person can ...

* Susan Hutchison, former chair of the

Washington State Republican Party The Washington State Republican Party is the U.S. state, state affiliate of the national Republican Party (United States), United States Republican Party, headquartered in Bellevue, Washington, Bellevue. History Campaigns and elections Washin ...

Rocky De La Fuente Roque "Rocky" De La Fuente Guerra (born October 10, 1954) is an American businessman and politician. A perennial candidate, De La Fuente was the Reform Party of the United States of America, Reform Party United States presidential election, nomi ...

, businessman and former presidential candidate *Tim Owen *Matthew D. Heines *Art Coday *John Orlinski *Keith Swank *RC Smith *Dave Bryant *Matt Hawkins *Glen Stockwell

=Withdrawn

= * Ron Higgins (withdrew May 19, 2018)

=Endorsements

Independents

=Declared

= * Jennifer "GiGi" Ferguson *Thor Amundson *Dave Strider *Charlie R Jackson *Jon Butler

=Write-in

= *Clay Johnson, activist

Minor parties

In Washington, primary candidates may declare a preference for any party, and their party preference does not imply that the candidate is nominated or endorsed by the party. Candidates may also declare a preference for new or single-candidate parties.

=Declared

= *Mike Luke (

Libertarian Libertarianism (from french: libertaire, "libertarian"; from la, libertas, "freedom") is a political philosophy that upholds liberty as a core value. Libertarians seek to maximize autonomy and political freedom, and minimize the state's e ...

Party) *Brad Chase (FDFR Party), communications strategist *Sam Wright (The Human Rights Party) *Alex Tsimerman (StandupAmerica) *Steve Hoffman ( Freedom Socialist Party), union organizer *James Robert "Jimmie" Deal (

Green Green is the color between cyan and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495570 Nanometre, nm. In subtractive color systems, used in painting and color printing, it is created by ...

Party)

Notes

Results

General election

Debates

Complete video of debate
October 8, 2018
Complete video of debate
October 20, 2018

Predictions

Polling

;Maria Cantwell vs. Rob McKenna

Results

By congressional district

Cantwell won 7 of 10 congressional districts with the remaining 3 going to Hutchison.

Notes

;Partisan clients

References

External links

Candidates
at

Vote Smart Vote Smart, formerly called Project Vote Smart, is a non-profit, non-partisan research organization that collects and distributes information on candidates for public office in the United States. It covers candidates and elected officials in si ...

Candidates
at

Ballotpedia Ballotpedia is a nonprofit and nonpartisan online political encyclopedia that covers federal, state, and local politics, elections, and public policy in the United States. The website was founded in 2007. Ballotpedia is sponsored by the Lucy Bur ...

Campaign finance
at FEC
Campaign finance
at

OpenSecrets OpenSecrets is a nonprofit organization based in Washington, D.C., that tracks data on campaign finance and lobbying. It was created from a merger of the Center for Responsive Politics (CRP) and the National Institute on Money in Politics (NIMP). ...

;Official campaign websites
Maria Cantwell (D) for SenateSusan Hutchison (R) for Senate
{{Washington elections

2018 File:2018 Events Collage.png, From top left, clockwise: The 2018 Winter Olympics opening ceremony in PyeongChang, South Korea; Protests erupt following the Assassination of Jamal Khashoggi; March for Our Lives protests take place across the United ...