Washington's 4th congressional district encompasses a large area of central Washington, covering the counties of Douglas, Okanogan, Grant, Yakima, Benton, and Klickitat; and parts of Adams and Franklin counties. The district is dominated by the Yakima and Tri-Cities areas. With a Cook Partisan Voting Index rating of R+10, it is the most Republican district in Washington.

Its Republican dominance is long-established. Apart from Klickitat County, which was won six times by Democrats between 1968 and 2008 — though never with more than 51 percent of the ballots — no Democratic presidential candidate has carried any county in the district since Bill Clinton in 1992 carried Okanogan County. None of the other counties in the district have backed a Democrat for President since Lyndon B. Johnson in 1964, while Adams County has not voted Democratic since Franklin D. Roosevelt in 1936.

John McCain won the district in 2008 with 58% of the vote. Mitt Romney won the district with 60% in 2012, while Donald Trump won this district all three times he ran, with 57% in both 2016 and 2020, and 59% in 2024. This district was the most Republican congressional district in the state in all five of those presidential elections.

Only three Democrats have ever represented the district in Congress. The last Democrat to represent the district was Jay Inslee, who held the seat during the 103rd Congress. Doc Hastings, Inslee's Republican opponent in 1992, defeated Inslee in a 1994 rematch and served in Congress until he retired in 2014. After losing to Hastings in 1994, Inslee later moved to Bainbridge Island and was sent back to Congress representing the first district in the central Puget Sound area. Inslee was elected the state's governor in 2012, and took office in January 2013. In the 2008 election, Hastings easily defeated challenger George Fearing. The 4th district has been represented in the U.S. House of Representatives by Dan Newhouse since 2015, a Republican from Sunnyside.

Recent election results from statewide races Year Office Results2008 PresidentMcCain 58% - 40%2010 SenateRossi 65% - 35%2012 PresidentRomney 60% - 40%2016 PresidentTrump 57% - 36% SenateVance 55% - 45% GovernorBryant 60% - 40% Lt. GovernorMcClendon 64% - 36% Secretary of StateWyman 69% - 31% AuditorMiloscia 61% - 39%2018 SenateHutchison 61% - 39%2020 PresidentTrump 57% - 40% GovernorCulp 62% - 38% Secretary of StateWyman 67% - 33% TreasurerDavidson 63% - 37% AuditorLeyba 59% - 41% Attorney GeneralLarkin 60% - 40%2022 SenateSmiley 66% - 34% Secretary of State (Spec.)Anderson 59% - 32%2024 PresidentTrump 59% - 38% SenateGarcia 58% - 41% GovernorReichert 63% - 37% Lt. GovernorMatthews 64% - 36% Secretary of StateWhitaker 60% - 40% TreasurerHanek 61% - 39% AuditorHawkins 61% - 39% Attorney GeneralSerrano 64% - 36% Commissioner of Public LandsHerrera Beutler 66% - 34%

Composition For the 118th and successive Congresses (based on redistricting following the 2020 census), the district contains all or portions of the following counties and communities:https://www2.census.gov/geo/maps/cong_dist/cd118/cd_based/ST53/CD118_WA04.pdf

Adams County (1)

Othello Benton County (6) All 6 communities Douglas County (6) All 6 communities Franklin County (2) Pasco, West Pasco Grant County (25) All 25 communities Klickitat County (13) All 13 communities

Okanogan County (19)

All 19 communities

Yakima County (28)

All 28 communities

List of members representing the district Member Party Years Congress Electoral history District location District established March 4, 1915 William La Follette Republican March 4, 1915 –March 3, 1919 Redistricted from the and re-elected in 1914.Re-elected in 1916.Lost renomination. John W. Summers Republican March 4, 1919 –March 3, 1933 Elected in 1918.Re-elected in 1920.Re-elected in 1922.Re-elected in 1924.Re-elected in 1926.Re-elected in 1928.Re-elected in 1930.Lost re-election. Knute Hill Democratic March 4, 1933 –January 3, 1943 Elected in 1932.Re-elected in 1934.Re-elected in 1936.Re-elected in 1938.Re-elected in 1940.Lost re-election. Hal Holmes Republican January 3, 1943 –January 3, 1959 Elected in 1942.Re-elected in 1944.Re-elected in 1946.Re-elected in 1948.Re-elected in 1950.Re-elected in 1952.Re-elected in 1954.Re-elected in 1956.Retired. Catherine Dean May Republican January 3, 1959 –January 3, 1971 Elected in 1958.Re-elected in 1960.Re-elected in 1962.Re-elected in 1964.Re-elected in 1966.Re-elected in 1968.Lost re-election. Mike McCormack Democratic January 3, 1971 –January 3, 1981 Elected in 1970.Re-elected in 1972.Re-elected in 1974.Re-elected in 1976.Re-elected in 1978.Lost re-election. Sid Morrison Republican January 3, 1981 –January 3, 1993 Elected in 1980.Re-elected in 1982.Re-elected in 1984.Re-elected in 1986.Re-elected in 1988.Re-elected in 1990.Retired to run for governor. Jay Inslee Democratic January 3, 1993 –January 3, 1995 Elected in 1992.Lost re-election. Doc Hastings Republican January 3, 1995 –January 3, 2015 Elected in 1994.Re-elected in 1996.Re-elected in 1998.Re-elected in 2000.Re-elected in 2002.Re-elected in 2004.Re-elected in 2006.Re-elected in 2008.Re-elected in 2010.Re-elected in 2012.Retired. 2003–2013 2013–2023 Dan Newhouse Republican January 3, 2015 –present Elected in 2014.Re-elected in 2016.Re-elected in 2018.Re-elected in 2020.Re-elected in 2022.Re-elected in 2024. Retiring at end of term. 2023–present

Recent election results

2012

2014

2016

2018

2020

2022

2024

Historical district boundaries

See also United States House of Representatives elections in Washington, 2008 United States House of Representatives elections in Washington, 2010 United States House of Representatives elections in Washington, 2012 United States House of Representatives elections in Washington, 2014

References

Congressional Biographical Directory of the United States 1774–present ; accessed November 8, 2014.

External links Washington State Redistricting Commission Find your new congressional district: a searchable map, Seattle Times, January 13, 2012