# 2020 United States House of Representatives elections in Washington

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The 2020 United States House of Representatives elections in Washington were held on November 3, 2020, to elect the 10 U.S. representatives from the state of Washington, one from each of the state's 10 congressional districts. The elections coincided with the 2020 U.S. presidential election, as well as other elections to the House of Representatives, elections to the United States Senate and various state and local elections.

## Overview

| District | Democratic | Democratic | Republican | Republican | Others | Others | Total | Total | Result |
| District | Votes | % | Votes | % | Votes | % | Votes | % | Result |
| District 1 | 249,944 | 58.55% | 176,407 | 41.33% | 511 | 0.12% | 426,862 | 100.0% | Democratic hold |
| District 2 | 255,252 | 63.09% | 148,384 | 36.67% | 962 | 0.24% | 404,598 | 100.0% | Democratic hold |
| District 3 | 181,347 | 43.39% | 235,579 | 56.37% | 977 | 0.23% | 417,903 | 100.0% | Republican hold |
| District 4 | 102,667 | 33.63% | 202,108 | 66.21% | 488 | 0.16% | 305,263 | 100.0% | Republican hold |
| District 5 | 155,737 | 38.51% | 247,815 | 61.29% | 808 | 0.20% | 404,360 | 100.0% | Republican hold |
| District 6 | 247,429 | 59.30% | 168,783 | 40.45% | 1,004 | 0.24% | 417,216 | 100.0% | Democratic hold |
| District 7 | 387,109 | 82.99% | 78,240 | 16.77% | 1,113 | 0.24% | 466,462 | 100.0% | Democratic hold |
| District 8 | 213,123 | 51.71% | 198,423 | 48.15% | 566 | 0.14% | 412,112 | 100.0% | Democratic hold |
| District 9 | 258,771 | 74.14% | 89,697 | 25.70% | 582 | 0.17% | 349,050 | 100.0% | Democratic hold |
| District 10 | 288,977 | 84.89% | 0 | 0.00% | 51,430 | 15.11% | 340,407 | 100.0% | Democratic hold |
| Total | 2,340,356 | 59.34% | 1,545,436 | 39.18% | 58,441 | 1.48% | 3,944,233 | 100.0% | |
Popular vote
Democratic
59.34%
Republican
39.18%
Other
1.48% :
House seats
Democratic
70.00%
Republican
30.00% :

## District 1

The 1st congressional district spans the northeastern Seattle suburbs, including Redmond and Kirkland, along the Cascades to the Canada–US border. The incumbent was Democrat Suzan DelBene, was re-elected with 59.3% of the vote in 2018.

### Primary election
#### Candidates
##### Declared

* Jeffrey Beeler Sr. (Republican), Sultan city councilman and candidate for Washington's 1st congressional district in 2018
* Derek Chartrand (Republican), sales executive
* Suzan DelBene (Democratic), incumbent U.S. Representative
* Matthew Heines (independent), educator
* Robert Mair (independent), candidate for Washington's 1st congressional district in 2018
* Steve Skelton (Libertarian), office manager
* Justin Smoak (independent), mining engineer

#### Debate

2020 Washington's 1st congressional district primary debate :
| No. | Date | Host | Moderator | Link | Republican | Republican | Democratic | Independent | Independent | Libertarian | Independent |
| Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | | | | | | | |
| Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Jeffrey Beller Sr. | Derek Chartrand | Suzan DelBene | Matthew Heines | Robert Mair | Steve Skelton | Justin Smoak |
| 1 | Jul. 22, 2020 | League of Women Voters of Skagit County League of Women Voters of Bellingham-Whatcom County | Janet Ott | | P | P | P | P | N | P | P |

#### Primary results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Suzan DelBene (incumbent) | 147,666 | 55.4 |
| | Republican | Jeffrey Beeler Sr. | 85,655 | 32.1 |
| | Republican | Derek Chartrand | 15,777 | 5.9 |
| | No party preference | Justin Smoak | 7,701 | 2.9 |
| | Libertarian | Steven Skelton | 7,286 | 2.7 |
| | No party preference | Matthew Heines | 1,335 | 0.5 |
| | No party preference | Robert Dean Mair | 812 | 0.3 |
| | Write-in | Write-in | 340 | 0.1 |
| Total votes | Total votes | Total votes | 266,572 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | November 2, 2020 |
| Inside Elections | Safe D | October 28, 2020 |
| Sabato's Crystal Ball | Safe D | November 2, 2020 |
| Politico | Safe D | November 2, 2020 |
| Daily Kos | Safe D | November 2, 2020 |
| RCP | Safe D | November 2, 2020 |

#### Results

Washington's 1st congressional district, 2020 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Suzan DelBene (incumbent) | 249,944 | 58.6 |
| | Republican | Jeffrey Beeler | 176,407 | 41.3 |
| | Write-in | Write-in | 511 | 0.1 |
| Total votes | Total votes | Total votes | 426,862 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 2

The 2nd congressional district encompasses the northern Puget Sound area, including Everett and Bellingham. The incumbent was Democrat Rick Larsen, who was re-elected with 71.3% of the vote in 2018.

### Primary election
#### Candidates
##### Declared

* Jason Call (Democratic), progressive activist
* James Golder (Republican), former Idaho state representative (1977–1985)
* Cody Hart (Republican), U.S. Navy veteran
* Timothy Hazelo (Republican), U.S. Navy veteran
* Kari Ilonummi (Republican), blogger
* Carrie Kennedy (Republican), activist
* Rick Larsen (Democratic), incumbent U.S. Representative
* Tim Uy (Republican), volunteer firefighter

#### Endorsements

Organizations
* League of Conservation Voters Action Fund
* Planned Parenthood Action Fund
* Sierra Club
Organizations
* Democratic Socialists of America – Snohomish County chapter

#### Debate

2020 Washington's 2nd congressional district primary debate :
| No. | Date | Host | Moderator | Link | Democratic | Republican | Republican | Republican | Republican | Republican | Democratic | Republican |
| Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | | | | | | | | |
| Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Jason Call | James Golder | Cody Hart | Timothy Hazelo | Kari Ilonummi | Carrie Kennedy | Rick Larsen | Tim Uy |
| 1 | Jul. 22, 2020 | League of Women Voters of Skagit County League of Women Voters of Bellingham-Whatcom County | Julie Hubner | | P | N | P | P | N | P | P | P |

#### Primary results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Rick Larsen (incumbent) | 120,694 | 48.5 |
| | Republican | Timothy S. Hazelo | 37,104 | 14.9 |
| | Democratic | Jason Call | 34,537 | 13.9 |
| | Trump Republican | Tim Uy | 24,613 | 9.9 |
| | Republican | Cody Hart | 14,225 | 5.7 |
| | Republican | Carrie R. Kennedy | 9,096 | 3.6 |
| | Republican | James Dean Golder | 5,343 | 2.1 |
| | Republican | Kari Ilonummi | 2,889 | 1.2 |
| | Write-in | Write-in | 284 | 0.1 |
| Total votes | Total votes | Total votes | 248,788 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | November 2, 2020 |
| Inside Elections | Safe D | October 28, 2020 |
| Sabato's Crystal Ball | Safe D | November 2, 2020 |
| Politico | Safe D | November 2, 2020 |
| Daily Kos | Safe D | November 2, 2020 |
| RCP | Safe D | November 2, 2020 |

#### Results

Washington's 2nd congressional district, 2020 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Rick Larsen (incumbent) | 255,252 | 63.1 |
| | Republican | Timothy Hazelo | 148,384 | 36.7 |
| | Write-in | Write-in | 962 | 0.2 |
| Total votes | Total votes | Total votes | 404,598 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 3

The 3rd district encompasses the southernmost portion of western and central Washington. It includes the counties of Lewis, Pacific, Wahkiakum, Cowlitz, Clark, Skamania, and Klickitat, as well as a small sliver of southern Thurston County. The incumbent was Republican Jaime Herrera Beutler, who was re-elected with 52.7% of the vote in 2018.

### Primary election
#### Candidates
##### Declared

* Jaime Herrera Beutler (Republican), incumbent U.S. Representative
* Devin Gray (Democratic)
* Martin Hash (independent), businessman and Democratic candidate for Washington's 3rd congressional district in 2018
* Carolyn Long (Democratic), Washington State University Vancouver professor and nominee for Washington's 3rd congressional district in 2018
* Davy Ray (Democratic)

##### Withdrawn

* Peter Khalil (Democratic), legal mediator

#### Endorsements

Organizations
* Maggie's List
Organizations
* Brand New Congress
Organizations
* EMILY's List
* Human Rights Campaign
* League of Conservation Voters Action Fund
* NARAL Pro-Choice America
* Sierra Club

#### Primary results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Jaime Herrera Beutler (incumbent) | 135,726 | 56.2 |
| | Democratic | Carolyn Long | 95,875 | 39.7 |
| | No party preference | Martin D. Hash | 3,904 | 1.6 |
| | Democratic | Davy Ray | 3,522 | 1.5 |
| | Democratic | Devin C. Gray | 1,969 | 0.8 |
| | Write-in | Write-in | 343 | 0.1 |
| Total votes | Total votes | Total votes | 241,339 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Lean R | November 2, 2020 |
| Inside Elections | Lean R | October 28, 2020 |
| Sabato's Crystal Ball | Lean R | November 2, 2020 |
| Politico | Lean R | November 2, 2020 |
| Daily Kos | Lean R | November 2, 2020 |
| RCP | Lean R | November 2, 2020 |

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Jaime Herrera Beutler (R) | Carolyn Long (D) | Undecided |
| DCCC Targeting & Analytics (D) | October 19–20, 2020 | 425 (LV) | ± 4.9% | 49% | 47% | 4% |
| GQR Research (D) | September 24–26, 2020 | 400 (LV) | ± 4.9% | 49% | 47% | 4% |
| RMG Research | July 20–August 4, 2020 | 500 (RV) | ± 4.5% | 44% | 40% | 16% |

#### Results

Washington's 3rd congressional district, 2020 :
| Party | Party | Candidate | Votes | % |
| | Republican | Jaime Herrera Beutler (incumbent) | 235,579 | 56.4 |
| | Democratic | Carolyn Long | 181,347 | 43.4 |
| | Write-in | Write-in | 977 | 0.2 |
| Total votes | Total votes | Total votes | 417,903 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## District 4

The 4th congressional district encompasses rural central Washington, including Yakima and Tri-Cities area. The incumbent was Republican Dan Newhouse, was re-elected with 62.8% of the vote in 2018.

### Primary election
#### Candidates

* Ryan Cooper (Libertarian), Libertarian candidate for Washington State Senate in 2018
* Evan Jones (independent), community activist
* Doug McKinley (Democratic), attorney
* Dan Newhouse (Republican), incumbent U.S. Representative
* Sarena Sloot (Republican), nurse practitioner
* Tracy Wright (Republican), computer programmer

#### Primary results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Dan Newhouse (incumbent) | 101,539 | 57.4 |
| | Democratic | Douglas E. McKinley | 46,471 | 26.2 |
| | Republican | Sarena Sloot | 11,823 | 6.7 |
| | Republican | Tracy Wright | 9,088 | 5.1 |
| | Libertarian | Ryan Cooper | 4,080 | 2.3 |
| | Independent | Evan Jones | 3,816 | 2.2 |
| | Write-in | Write-in | 228 | 0.1 |
| Total votes | Total votes | Total votes | 177,045 | 100 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe R | November 2, 2020 |
| Inside Elections | Safe R | October 28, 2020 |
| Sabato's Crystal Ball | Safe R | November 2, 2020 |
| Politico | Safe R | November 2, 2020 |
| Daily Kos | Safe R | November 2, 2020 |
| RCP | Safe R | November 2, 2020 |

#### Results

Washington's 4th congressional district, 2020 :
| Party | Party | Candidate | Votes | % |
| | Republican | Dan Newhouse (incumbent) | 202,108 | 66.2 |
| | Democratic | Douglas McKinley | 102,667 | 33.6 |
| | Write-in | Write-in | 488 | 0.2 |
| Total votes | Total votes | Total votes | 305,263 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## District 5

The 5th district encompasses eastern Washington, and includes the city of Spokane. The incumbent was Republican Cathy McMorris Rodgers, who was re-elected with 54.8% of the vote in 2018.

### Primary election
#### Candidates
##### Declared

* Stephen Major (Republican), former mortgage broker
* Cathy McMorris Rodgers (Republican), incumbent U.S. Representative
* Brendan O'Regan (independent)
* Dave Wilson (Democratic), community activist

##### Withdrawn

* Chris Armitage (Democratic), comedian and U.S. Air Force veteran(remained on ballot)
* Rob Chase (Republican)

#### Endorsements

U.S. representatives
* Ted Lieu, U.S. representative from California's 33rd congressional district
Organizations
* 90 for 90
* Brand New Congress
* Our Revolution – Inland Northwest chapter
* Spokane County Democrats
Federal officials
* Donald Trump, President of the United States (2017-2021)
Organizations
* Maggie's List

#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Cathy McMorris Rodgers (incumbent) | 122,744 | 52.7 |
| | Democratic | Dave Wilson | 56,492 | 24.3 |
| | Democratic | Christopher Armitage (withdrawn) | 28,180 | 12.1 |
| | Republican | Stephen T. Major | 20,000 | 8.6 |
| | Independent | Brendan O'Regan | 4,995 | 2.1 |
| | Write-in | Write-in | 385 | 0.2 |
| Total votes | Total votes | Total votes | 232,796 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe R | November 2, 2020 |
| Inside Elections | Safe R | October 28, 2020 |
| Sabato's Crystal Ball | Safe R | November 2, 2020 |
| Politico | Likely R | November 2, 2020 |
| Daily Kos | Safe R | November 2, 2020 |
| RCP | Safe R | November 2, 2020 |

#### Results

Washington's 5th congressional district, 2020 :
| Party | Party | Candidate | Votes | % |
| | Republican | Cathy McMorris Rodgers (incumbent) | 247,815 | 61.3 |
| | Democratic | Dave Wilson | 155,737 | 38.5 |
| | Write-in | Write-in | 808 | 0.2 |
| Total votes | Total votes | Total votes | 404,360 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## District 6

The 6th district is based on the Olympic Peninsula, and includes western Tacoma. The incumbent was Democrat Derek Kilmer, who was re-elected with 63.9% of the vote in 2018.

### Primary election
#### Candidates
##### Declared

* Johny Alberg (Republican)
* Stephen Brodhead (Republican), businessman
* Derek Kilmer (Democratic), incumbent U.S. Representative
* Elizabeth Kreiselmaier (Republican), psychologist
* Rebecca Parson (Democratic), Tacoma Area Commission on Disabilities commissioner
* Chris Welton (Republican), records technician

#### Withdrew

* Matthew Tirman (Democratic), Bainbridge Island city councilman

##### Endorsements

Organizations
* League of Conservation Voters Action Fund
* Planned Parenthood Action Fund
* Sierra Club
Organizations
* Democratic Socialists of America
* National Women's Political Caucus
* Our Revolution – national
* Our Revolution – Washington
* People's Policy Project

#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Derek Kilmer (incumbent) | 125,019 | 47.3 |
| | Republican | Elizabeth Kreiselmaier | 71,601 | 27.1 |
| | Democratic | Rebecca Parson | 35,631 | 13.5 |
| | Republican | Chris Welton | 14,795 | 5.6 |
| | Republican | Stephan Brodhead | 9,761 | 3.7 |
| | Republican | Johny Alberg | 7,178 | 2.7 |
| | Write-in | Write-in | 338 | 0.1 |
| Total votes | Total votes | Total votes | 264,323 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | November 2, 2020 |
| Inside Elections | Safe D | October 28, 2020 |
| Sabato's Crystal Ball | Safe D | November 2, 2020 |
| Politico | Safe D | November 2, 2020 |
| Daily Kos | Safe D | November 2, 2020 |
| RCP | Safe D | November 2, 2020 |

#### Results

Washington's 6th congressional district, 2020 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Derek Kilmer (incumbent) | 247,429 | 59.3 |
| | Republican | Elizabeth Kreiselmaier | 168,783 | 40.5 |
| | Write-in | Write-in | 1,004 | 0.2 |
| Total votes | Total votes | Total votes | 417,216 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 7

The 7th congressional district encompasses most of Seattle, as well Edmonds, Shoreline, Lake Forest Park, Vashon Island, and Burien. The incumbent was Democrat Pramila Jayapal, who was reelected with 83.6% of the vote in 2018.

### Primary election
#### Candidates
##### Declared

* Jack Hughes-Hageman (Democratic)
* Pramila Jayapal (Democratic) incumbent U.S. Representative
* Craig Keller (Republican)
* Rick Lewis (independent)
* Scott Sutherland (Republican)

#### Primary results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Pramila Jayapal (incumbent) | 240,801 | 80.0 |
| | Republican | Craig Keller | 24,477 | 8.1 |
| | Independent | Rick Lewis | 13,885 | 4.6 |
| | Republican | Scott Sutherland | 11,332 | 3.8 |
| | Democratic | Jack Hughes-Hageman | 10,052 | 3.3 |
| | Write-in | Write-in | 537 | 0.2 |
| Total votes | Total votes | Total votes | 301,084 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | November 2, 2020 |
| Inside Elections | Safe D | October 28, 2020 |
| Sabato's Crystal Ball | Safe D | November 2, 2020 |
| Politico | Safe D | November 2, 2020 |
| Daily Kos | Safe D | November 2, 2020 |
| RCP | Safe D | November 2, 2020 |

#### Results

Washington's 7th congressional district, 2020 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Pramila Jayapal (incumbent) | 387,109 | 83.0 |
| | Republican | Craig Keller | 78,240 | 16.8 |
| | Write-in | Write-in | 1,113 | 0.2 |
| Total votes | Total votes | Total votes | 466,462 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 8

The 8th district encompasses the eastern suburbs of Seattle including Sammamish, Maple Valley, Covington, Hobart, Issaquah, and Auburn and stretches into rural central Washington, including Chelan County and Kittitas County, as well as taking in eastern Pierce County. The incumbent was Democrat Kim Schrier, who flipped the district and was elected with 52.4% of the vote in 2018.

### Primary election
#### Candidates
##### Declared

* Keith Arnold (Democratic)
* Corey Bailey (independent), fisherman
* Ryan Burkett (no party preference)
* Jesse Jensen (Republican), U.S. Army veteran and Amazon senior project manager
* James Mitchell (Democratic), entrepreneur
* Dean Saulibio (Trump Republican), U.S. Army veteran
* Kim Schrier (Democratic), incumbent U.S. Representative
* Keith Swank (Republican), former Seattle Police Department officer, candidate for Washington's 8th congressional district in 2012, and candidate for U.S. Senate in 2018

##### Declined

* Reagan Dunn (Republican), King County Councilmember and son of former U.S. Representative Jennifer Dunn

#### Primary results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Kim Schrier (incumbent) | 106,611 | 43.3 |
| | Republican | Jesse Jensen | 49,368 | 20.0 |
| | Republican | Keith R. Swank | 42,809 | 17.4 |
| | Trump Republican Party | Dean Saulibio | 28,976 | 11.8 |
| | Independent | Corey Bailey | 6,552 | 2.7 |
| | Democratic | James Mitchell | 6,187 | 2.5 |
| | Democratic | Keith Arnold | 4,111 | 1.7 |
| | No party preference | Ryan Dean Burkett | 1,458 | 0.6 |
| | Write-in | Write-in | 289 | 0.1 |
| Total votes | Total votes | Total votes | 246,361 | 100.0 |

#### Endorsements

U.S. representatives
* Dave Reichert, former U.S. Representative from Washington's 8th congressional district
Organizations
* War Veterans Fund
U.S. presidents
* Barack Obama, 44th president of the United States (2009-2017), U.S. Senator from Illinois (2005-2008)
U.S. vice presidents
* Joe Biden, 47th vice president of the United States (2009-2017), U.S. Senator from Delaware (1973-2009), 2020 Presidential nominee
U.S. senators
* Patty Murray, U.S. senator from Washington
U.S. representatives
* Suzan DelBene, representative from Washington's 1st Congressional District
* Pramila Jayapal, representative from Washington's 7th Congressional District
* Derek Kilmer, representative from Washington's 6th Congressional District
* Rick Larsen, representative from Washington's 2nd Congressional District
* Adam Smith, representative from Washington's 9th Congressional District
State and local officials
* Jay Inslee, Governor of Washington
Organizations
* 314 Action
* EMILY's List
* League of Conservation Voters Action Fund
* Sierra Club
Newspapers
* The Seattle Times
* The Stranger

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Likely D | November 2, 2020 |
| Inside Elections | Safe D | October 28, 2020 |
| Sabato's Crystal Ball | Lean D | November 2, 2020 |
| Politico | Likely D | November 2, 2020 |
| Daily Kos | Safe D | November 2, 2020 |
| RCP | Lean D | November 2, 2020 |

#### Results

Washington's 8th congressional district, 2020 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Kim Schrier (incumbent) | 213,123 | 51.7 |
| | Republican | Jesse Jensen | 198,423 | 48.2 |
| | Write-in | Write-in | 566 | 0.1 |
| Total votes | Total votes | Total votes | 412,112 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 9

The 9th congressional district stretches from small parts of northeastern Tacoma up to southeastern Seattle, taking in the surrounding suburbs, including Federal Way, Des Moines, Kent, SeaTac, Renton, Mercer Island, and Bellevue. The incumbent was Democrat Adam Smith, who was re-elected with 67.9% of the vote in 2018.

### Primary election
#### Candidates
##### Declared

* Doug Basler (Republican)
* Jorge Besada (Libertarian)
* Joshua Campbell (Republican)
* Adam Smith (Democratic), incumbent U.S. Representative

#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Adam Smith (incumbent) | 145,601 | 73.6 |
| | Republican | Doug Basler | 30,923 | 15.6 |
| | Republican | Joshua Campbell | 15,983 | 8.1 |
| | Libertarian | Jorge Besada | 4,792 | 2.4 |
| | Write-in | Write-in | 560 | 0.3 |
| Total votes | Total votes | Total votes | 197,859 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | November 2, 2020 |
| Inside Elections | Safe D | October 28, 2020 |
| Sabato's Crystal Ball | Safe D | November 2, 2020 |
| Politico | Safe D | November 2, 2020 |
| Daily Kos | Safe D | November 2, 2020 |
| RCP | Safe D | November 2, 2020 |

#### Results

Washington's 9th congressional district, 2020 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Adam Smith (incumbent) | 258,771 | 74.1 |
| | Republican | Doug Basler | 89,697 | 25.7 |
| | Write-in | Write-in | 582 | 0.2 |
| Total votes | Total votes | Total votes | 349,050 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 10

The 10th district includes Olympia and the Tacoma suburbs, including Puyallup, Lakewood, and University Place. The incumbent was Democrat Denny Heck, who was re-elected with 61.5% of the vote in 2018. On December 4, 2019, Heck announced that he will retire from Congress and not seek re-election.

### Primary election
#### Candidates
##### Declared

* Mary Bacon (Democratic), environmental scientist and U.S. Army veteran
* Randy Bell (Democratic)
* Richard Boyce (Congress Sucks), Independent candidate for Washington's 10th congressional district in 2016
* Todd Buckley (independent), data analyst
* Joshua Collins (Essential Workers), truck driver
* Beth Doglio (Democratic), state representative
* Phil Gardner (Democratic), former district director for U.S. Representative Denny Heck
* Don Hewett (Republican), executive engineer
* Rian Ingrim (Republican), businessman and U.S. Army Veteran
* Dean Johnson (Republican), Puyallup city councilman
* Ralph Johnson (Republican)
* Eric LeMay (Democratic), businessman
* Jackson Maynard (Republican), attorney
* Gordon Press (Republican)
* Kristine Reeves (Democratic), former state representative
* Nancy Dailey Slotnick (Republican), businesswoman and U.S. Army veteran
* Marilyn Strickland (Democratic), CEO of the Seattle Metropolitan Chamber of Commerce and former mayor of Tacoma
* Ryan Tate (Republican), software engineer
* Sam Wright (Democratic)

##### Declined

* Laurie Dolan (Democratic), state representative
* Denny Heck (Democratic), incumbent U.S. Representative (running for lieutenant governor)
* Sam Hunt (Democratic), state senator
* Christine Kilduff (Democratic), state representative
* Chris Reykdal (Democratic), Washington Superintendent of Public Instruction (running for reelection)
* Cheryl Selby (Democratic), mayor of Olympia
* Kim Wyman (Republican), Washington Secretary of State (running for reelection)

#### Endorsements

Organizations
* Our Revolution – Thurston County, Washington, chapter
U.S. Senators
* Bernie Sanders, U.S. senator from Vermont
U.S. Representatives
* Pramila Jayapal, U.S. representative from WA-7
* Mark Pocan, U.S. representative from WI-2
* Jamie Raskin, U.S. representative from MD-8
Individuals
* Maia Bellon, former director of the Washington Department of Ecology
* Jamaal Bowman, 2020 Democratic nominee for New York's 16th congressional district
Organizations
* League of Conservation Voters Action Fund
* LGBTQ Victory Fund
* Sierra Club
* Sunrise Movement
Federal officeholders
* Adam Smith, U.S. representative from Washington's 9th congressional district
State politicians
* Victoria Woodards, Mayor of Tacoma

### Debate

2020 Washington's 10th congressional district primary debate :
| No. | Date | Host | Moderator | Link | Essential Workers | Democratic | Democratic | Democratic | Republican | Democratic |
| Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | | | | | | |
| Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Key: P Participant  A Absent  N Not invited  I Invited W Withdrawn | Joshua Collins | Beth Doglio | Phil Gardner | Kristine Reeves | Nancy Slotnick | Marilyn Strickland |
| 1 | Jul. 2, 2020 | The Nature Conservancy Washington Washington State Wire | | | P | P | P | P | P | P |

#### Primary results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Marilyn Strickland | 45,988 | 20.4 |
| | Democratic | Beth Doglio | 34,254 | 15.2 |
| | Democratic | Kristine Reeves | 29,236 | 12.9 |
| | Republican | Rian Ingrim | 25,688 | 11.4 |
| | Republican | Jackson Maynard | 18,526 | 8.2 |
| | Republican | Dean Johnson | 16,700 | 7.4 |
| | Republican | Nancy Dailey Slotnick | 15,201 | 6.7 |
| | Republican | Don Hewett | 10,750 | 4.8 |
| | Democratic | Phil Gardner | 5,292 | 2.3 |
| | Republican | Ryan Tate | 4,196 | 1.9 |
| | Democratic | Mary Bacon | 3,992 | 1.8 |
| | Independent | Todd Buckley | 3,552 | 1.6 |
| | Democratic | Eric LeMay | 3,072 | 1.4 |
| | Essential Workers | Joshua Collins | 2,667 | 1.2 |
| | Congress Sucks | Richard Boyce | 2,302 | 1.0 |
| | Republican | Ralph Johnson | 1,441 | 0.6 |
| | Republican | Gordon Allen Pross | 1,186 | 0.5 |
| | Democratic | Sam Wright | 1,129 | 0.5 |
| | Democratic | Randolph Bell | 563 | 0.2 |
| | Write-in | Write-in | 267 | 0.1 |
| Total votes | Total votes | Total votes | 226,002 | 100.0 |

### General election
#### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe D | November 2, 2020 |
| Inside Elections | Safe D | October 28, 2020 |
| Sabato's Crystal Ball | Safe D | November 2, 2020 |
| Politico | Safe D | November 2, 2020 |
| Daily Kos | Safe D | November 2, 2020 |
| RCP | Safe D | November 2, 2020 |

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Marilyn Strickland (D) | Beth Doglio (D) | Undecided |
| GQR Research | August 24–28, 2020 | 400 (LV) | ± 4.9% | 43% | 22% | 35% |

#### Results

Washington's 10th congressional district, 2020 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Marilyn Strickland | 167,937 | 49.3 |
| | Democratic | Beth Doglio | 121,040 | 35.6 |
| | Write-in | Write-in | 51,430 | 15.1 |
| Total votes | Total votes | Total votes | 340,407 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |