The Washington State Senate elections were held on November 2, 2010, in which about half of the state's 49 legislative districts choose a state senator for a four-year term to the Washington State Senate. The other half of state senators are chosen in the next biennial election, so that about half of the senators, along with all the members of the Washington State House of Representatives, are elected every two years.

24 seats were regularly scheduled to be up this cycle, along with 1 additional seat holding a special election to fill an unexpired term: the 28th district, held by appointed Senator Steve Litzow, whose former incumbent Fred Jarrett vacated the seat.

Summary of results

Districts not listed were not up for election in 2020.

State Senate DistrictIncumbent PartyElected Senator Party 6th Chris Marr Dem Michael Baumgartner Rep 7th Bob Morton Rep Bob Morton Rep 8th Jerome Delvin Rep Jerome Delvin Rep 13th Janéa Holmquist Newbry Rep Janéa Holmquist Newbry Rep 15th Jim Honeyford Rep Jim Honeyford Rep 21st Paull Shin Dem Paull Shin Dem 26th Derek Kilmer Dem Derek Kilmer Dem 29th Rosa Franklin Dem Steve Conway Dem 30th Tracey Eide Dem Tracey Eide Dem 31st Pam Roach Rep Pam Roach Rep 32nd Darlene Fairley Dem Maralyn Chase Dem 33rd Karen Keiser Dem Karen Keiser Dem 34th Joe McDermott Dem Sharon K. Nelson Dem 35th Tim Sheldon Dem Tim Sheldon Dem 36th Jeanne Kohl-Welles Dem Jeanne Kohl-Welles Dem 37th Adam Kline Dem Adam Kline Dem 38th Jean Berkey Dem Nick Harper Dem 41st Randy Gordon Dem Steve Litzow Rep 42nd Dale Brandland Rep Doug Ericksen Rep 43rd Ed Murray Dem Ed Murray Dem 44th Steve Hobbs Dem Steve Hobbs Dem 45th Eric Oemig Dem Andy Hill Rep 46th Ken Jacobson Dem Scott White Dem 47th Claudia Kauffman Dem Joe Fain Rep 48th Rodney Tom Dem Rodney Tom Dem

Predictions SourceRankingAs of Governing | November 1, 2010

Detailed results

Note: Washington uses a top two primary system. Official primary results can be obtained here and official general election results here.

District 6

Endorsements

U.S. Representatives Cathy McMorris Rodgers, U.S. Representative for Washington's 5th Congressional District State legislators Mark Schoesler, Senate Minority Leader Local officials David Condon, Chief of Staff for Cathy McMorris Rodgers and future Spokane Mayor Political parties Spokane County Republican Party Newspapers The Spokesman-Review </div></div>

District 7

District 8

District 13

District 15

District 21

District 26

District 29

District 30

District 31

District 32

District 33

District 34

District 35

District 36

District 37

District 38

District 41

District 42

District 43

District 44

District 45

District 46

District 47

District 48

References

Notes