# 2018 United States House of Representatives elections in Washington

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The 2018 United States House of Representatives elections in Washington were held on November 6, 2018, 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 other elections to the House of Representatives, elections to the United States Senate and various state and local elections. All nine incumbents seeking re-election were re-elected, but the Democratic Party won the open-seat in the 8th District previously held by a Republican, improving from a 6–4 margin to a 7–3 margin.

## Overview

Results of the 2018 United States House of Representatives elections in Washington by district:
| District | Democratic | Democratic | Republican | Republican | Others | Others | Total | Total | Result |
| District | Votes | % | Votes | % | Votes | % | Votes | % | Result |
| District 1 | 197,209 | 59.27% | 135,534 | 40.73% | 0 | 0.00% | 332,743 | 100.0% | Democratic hold |
| District 2 | 210,187 | 71.29% | 0 | 0.00% | 84,646 | 28.71% | 294,833 | 100.0% | Democratic hold |
| District 3 | 145,407 | 47.33% | 161,819 | 52.67% | 0 | 0.00% | 307,226 | 100.0% | Republican hold |
| District 4 | 83,785 | 37.18% | 141,551 | 62.82% | 0 | 0.00% | 225,336 | 100.0% | Republican hold |
| District 5 | 144,925 | 45.24% | 175,422 | 54.76% | 0 | 0.00% | 320,347 | 100.0% | Republican hold |
| District 6 | 206,409 | 63.89% | 116,677 | 36.11% | 0 | 0.00% | 323,086 | 100.0% | Democratic hold |
| District 7 | 329,800 | 83.56% | 64,881 | 16.44% | 0 | 0.00% | 394,681 | 100.0% | Democratic hold |
| District 8 | 164,089 | 52.42% | 148,968 | 47.58% | 0 | 0.00% | 313,057 | 100.0% | Democratic gain |
| District 9 | 240,567 | 100.00% | 0 | 0.00% | 0 | 0.00% | 240,567 | 100.0% | Democratic hold |
| District 10 | 166,215 | 61.54% | 103,860 | 38.46% | 0 | 0.00% | 270,075 | 100.0% | Democratic hold |
| Total | 1,888,593 | 62.50% | 1,048,712 | 34.70% | 84,646 | 2.80% | 3,021,951 | 100.0% | |

## District 1

The 1st congressional district is located along the Puget Sound from the Canada–US border to King County. The district had a PVI of D+6. The incumbent was Democrat Suzan DelBene, who had represented the district since 2012. She was re-elected with 55% of the vote in 2016.

### Primary election
#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Suzan DelBene (incumbent) | 106,107 | 59.3 |
| | Republican | Jeffrey Beeler | 45,830 | 25.6 |
| | Republican | Scott Stafne | 20,354 | 11.4 |
| | No party preference | Adam Pilskog | 5,007 | 2.8 |
| | No party preference | Robert Mair | 1,622 | 0.9 |
| Total votes | Total votes | Total votes | 178,920 | 100.0 |

### General election
#### Results

Washington's 1st congressional district, 2018 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Suzan DelBene (incumbent) | 197,209 | 59.3 |
| | Republican | Jeffrey Beeler | 135,534 | 40.7 |
| Total votes | Total votes | Total votes | 332,743 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 2

The 2nd congressional district includes all of Island and San Juan counties and neighboring areas on the mainland from Bellingham in the north to Lynnwood in the south. The district had a PVI of D+10. The incumbent was Democrat Rick Larsen, who had represented the district since 2001. He was re-elected with 64% of the vote in 2016.

### Primary election
#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Rick Larsen (incumbent) | 101,497 | 64.85 |
| | Libertarian | Brian Luke | 12,320 | 7.87 |
| | Independent | Gary Franco | 12,269 | 7.84 |
| | Democratic | Collin Richard Carlson | 12,058 | 7.70 |
| | Moderate GOP | Uncle Mover | 11,832 | 7.56 |
| | Green | Stonewall "Stoney" Jackson Bird | 6,525 | 4.17 |
| Total votes | Total votes | Total votes | 156,501 | 100.0 |

### General election

Washington's 2nd congressional district, 2018 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Rick Larsen (incumbent) | 210,187 | 71.3 |
| | Libertarian | Brian Luke | 84,646 | 28.7 |
| Total votes | Total votes | Total votes | 294,833 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 3

The 3rd congressional district encompasses the southernmost portion of western and central Washington. It includes the counties of Lewis, Pacific, Wahkiakum, Cowlitz, Clark, Skamania, and Klickitat, and a small sliver of southern Thurston county. The district had a PVI of R+4. The incumbent was Republican Jaime Herrera Beutler, who had represented the district since 2011. She was re-elected with 62% of the vote in 2016.

### Primary election
#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Jaime Herrera Beutler (incumbent) | 68,961 | 42.1 |
| | Democratic | Carolyn Long | 57,798 | 35.3 |
| | Democratic | David McDevitt | 13,124 | 8.0 |
| | Republican | Earl Bowerman | 9,018 | 5.5 |
| | Democratic | Dorothy Gasque | 7,983 | 4.9 |
| | Republican | Michael Cortney | 5,528 | 3.4 |
| | Democratic | Martin Hash | 1,498 | 0.9 |
| Total votes | Total votes | Total votes | 163,910 | 100.0 |

### General election
#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Jaime Herrera Beutler (R) | Carolyn Long (D) | Undecided |
| NYT Upshot/Siena College | October 14–19, 2018 | 497 | ± 4.6% | 48% | 41% | 12% |
| Lake Research Partners (D-Long) | October 9–11, 2018 | 500 | ± 4.9% | 43% | 45% | – |
| Lake Research Partners (D-Long) | June 14–18, 2018 | 500 | ± 4.4% | 42% | 37% | 20% |
| Lake Research Partners (D-Long) | March 8–12, 2018 | 400 | ± 4.9% | 49% | 29% | 21% |

#### Endorsements
##### Federal officials

* Barack Obama, former president of the United States (2009–2017)

#### Results

Washington's 3rd congressional district, 2018 :
| Party | Party | Candidate | Votes | % |
| | Republican | Jaime Herrera Beutler (incumbent) | 161,819 | 52.7 |
| | Democratic | Carolyn Long | 145,407 | 47.3 |
| Total votes | Total votes | Total votes | 307,226 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## District 4

The 4th congressional district is located in central Washington, covering the counties of, Douglas, Okanogan, Grant, Yakima, Franklin, Benton, and Adams. The district is dominated by the Yakima and Tri-Cities areas. The district had a PVI of R+13. The incumbent was Republican Dan Newhouse, who had represented the district since 2015. He was re-elected with 58% of the vote in 2016.

### Primary election
#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Dan Newhouse (incumbent) | 77,203 | 63.2 |
| | Democratic | Christine Brown | 44,868 | 36.8 |
| Total votes | Total votes | Total votes | 122,071 | 100.0 |

### General election
#### Results

Washington's 4th congressional district, 2018 :
| Party | Party | Candidate | Votes | % |
| | Republican | Dan Newhouse (incumbent) | 141,551 | 62.8 |
| | Democratic | Christine Brown | 83,785 | 37.2 |
| Total votes | Total votes | Total votes | 225,336 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## District 5

The 5th congressional district is located in Eastern Washington and includes the counties of Ferry, Stevens, Pend Oreille, Lincoln, Spokane, Whitman, Walla Walla, Columbia, Garfield, and Asotin. It is centered on Spokane, the state's second largest city. The district had a PVI of R+8. The incumbent was Republican Cathy McMorris Rodgers, who had represented the district since 2005. She was re-elected with 60% of the vote in 2016.

### Primary election
#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Cathy McMorris Rodgers (incumbent) | 99,689 | 49.3 |
| | Democratic | Lisa Brown | 91,738 | 45.4 |
| | Trump Populist | Dave Saulibio | 4,845 | 2.4 |
| | Republican | Jered Gavin Bonneau | 4,453 | 2.2 |
| | Republican | Kari Olavi Ilonummi | 1,507 | 0.7 |
| Total votes | Total votes | Total votes | 202,232 | 100.0 |

### General election
#### Debate

2018 Washington's 5th congressional district debate :
| No. | Date | Host | Moderator | Link | 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 | Cathy McMorris Rodgers | Lisa Brown |
| 1 | Oct. 24, 2018 | Northwest Public Broadcasting Walla Walla Valley Chamber of Commerce | Bertha Clayton | | P | P |

#### Endorsements
##### U.S. executive branch officials

* Donald Trump, 45th president of the United States

##### U.S. executive branch officials

* Barack Obama, former president of the United States (2009–2017)

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Cathy McMorris Rodgers (R) | Lisa Brown (D) | Other | Undecided |
| FM3 Research (D-Brown) | September 16–20, 2018 | 521 | ± 4.3% | 49% | 46% | — | 5% |
| Public Policy Polling (D) | April 16–17, 2018 | 689 | ± 3.7% | 48% | 45% | — | 7% |
| Elway Research | April 4–7, 2018 | 403 | ± 5.0% | 44% | 38% | 3% | 16% |
| DCCC (D) | February 3, 2018 | 414 | ± 4.8% | 47% | 43% | — | — |

#### Results

Washington's 5th congressional district, 2018 :
| Party | Party | Candidate | Votes | % |
| | Republican | Cathy McMorris Rodgers (incumbent) | 175,422 | 54.8 |
| | Democratic | Lisa Brown | 144,925 | 45.2 |
| Total votes | Total votes | Total votes | 320,347 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## District 6

The 6th congressional district includes the Olympic Peninsula, most of the Kitsap Peninsula, and most of the city of Tacoma. The district had a PVI of D+6. The incumbent was Democrat Derek Kilmer, who had represented the district since 2013. He was re-elected with 62% of the vote in 2016.

### Primary election
#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Derek Kilmer (incumbent) | 117,848 | 63.5 |
| | Republican | Douglas Dightman | 60,651 | 32.7 |
| | Progressive | Tyler Myles Vega | 7,080 | 3.8 |
| Total votes | Total votes | Total votes | 185,579 | 100.0 |

### General election
#### Results

Washington's 6th congressional district, 2018 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Derek Kilmer (incumbent) | 206,409 | 63.9 |
| | Republican | Douglas Dightman | 116,677 | 36.1 |
| Total votes | Total votes | Total votes | 323,086 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 7

The 7th congressional district includes most of Seattle, all of Vashon Island, Edmonds, Shoreline, Kenmore, and parts of Burien and Normandy Park. The district had a PVI of D+33. The incumbent was Democrat Pramila Jayapal, who had represented the district since 2017. She was elected with 56% of the vote in 2016, to replace retiring Democratic representative Jim McDermott.

### Primary election
#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Pramila Jayapal (incumbent) | 189,175 | 82.7 |
| | Republican | Craig Keller | 39,657 | 17.3 |
| Total votes | Total votes | Total votes | 228,832 | 100.0 |

### General election
#### Results

Washington's 7th congressional district, 2018 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Pramila Jayapal (incumbent) | 329,800 | 83.6 |
| | Republican | Craig Keller | 64,881 | 16.4 |
| Total votes | Total votes | Total votes | 394,681 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 8

The 8th congressional district includes the eastern portions of King and Pierce counties and crosses the Cascade mountains to include Chelan and Kittitas counties. The population centers on the west side of the mountains include the exurban communities of Sammamish, Issaquah, and Auburn. On the east side, the 8th's population centers are rural communities Wenatchee, Leavenworth, and Ellensburg. The district had a PVI of EVEN.
Dave Reichert's retirement made this the only open seat in Washington in 2018, as well as the only seat to change party hands.

### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Dino Rossi | 73,288 | 43.1 |
| | Democratic | Kim Schrier | 31,837 | 18.7 |
| | Democratic | Jason Rittereiser | 30,708 | 18.1 |
| | Democratic | Shannon Hader | 21,317 | 12.5 |
| | Republican | Jack Hughes-Hageman | 4,270 | 2.5 |
| | Republican | Gordon Allen Pross | 2,081 | 1.2 |
| | Democratic | Tom Cramer | 1,468 | 0.9 |
| | Independent Centrist | Bill Grassie | 1,163 | 0.7 |
| | Libertarian | Richard Travis Reyes | 1,154 | 0.7 |
| | Independent | Keith Arnold | 1,090 | 0.6 |
| | Neither Major Party | Patrick Dillon | 898 | 0.5 |
| | No party preference | Todd Mahaffey | 673 | 0.4 |
| Total votes | Total votes | Total votes | 169,947 | 100.0 |

### General election
#### Endorsements
##### Organizations

* Club for Growth PAC

##### Newspapers

* The Seattle Times

##### U.S. executive branch officials

* Barack Obama, former president of the United States (2009–2017)

#### Debate

2018 Washington's 8th congressional district debate :
| No. | Date | Host | Moderator | Link | 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 | Dino Rossi | Kim Schrier |
| 1 | Oct. 17, 2018 | Associated Students of Central Washington University Central Washington University Ellensburg Daily Record Kittitas County Chamber of Commerce Cle Elum-Roslyn, Easton, Ellensburg, Kittitas & Thorp school districts | | | P | P |

#### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Dino Rossi (R) | Kim Schrier (D) | Undecided |
| NYT Upshot/Siena College | October 30 – November 4, 2018 | 477 | ± 4.8% | 45% | 48% | 8% |
| Elway Research | October 4–9, 2018 | 400 | ± 5.0% | 49% | 39% | 12% |
| NYT Upshot/Siena College | September 24–26, 2018 | 505 | ± 4.6% | 45% | 46% | 9% |
| GBA Strategies (D) | April 18–22, 2018 | 300 | ± 5.7% | 51% | 45% | – |
Dino Rossi vs. generic Democrat
| Poll source | Date(s) administered | Sample size | Margin of error | Dino Rossi (R) | Generic Democrat | Other | Undecided |
| DCCC (D) | March 23, 2018 | – | – | 46% | 44% | – | – |
| Public Policy Polling (D) | February 12–13, 2018 | 613 | ± 4.0% | 43% | 44% | – | 13% |
| Public Policy Polling (D) | October 6–8, 2017 | 753 | ± 3.6% | 42% | 43% | – | 15% |
Dino Rossi vs. Jason Rittereiser
| Poll source | Date(s) administered | Sample size | Margin of error | Dino Rossi (R) | Jason Rittereiser (D) | Undecided |
| GBA Strategies (D) | April 18–22, 2018 | 900 | ± 5.7% | 52% | 43% | – |
Dino Rossi vs. Shannon Hader
| Poll source | Date(s) administered | Sample size | Margin of error | Dino Rossi (R) | Shannon Hader (D) | Undecided |
| GBA Strategies (D) | April 18–22, 2018 | 900 | ± 5.7% | 51% | 45% | – |

#### Results

Washington's 8th congressional district, 2018 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Kim Schrier | 164,089 | 52.4 |
| | Republican | Dino Rossi | 148,968 | 47.6 |
| Total votes | Total votes | Total votes | 313,057 | 100.0 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

## District 9

The 9th congressional district encompasses a long, somewhat narrow area in western Washington through the densely populated central Puget Sound region, from Tacoma in the south to Bellevue in the north. The district had a PVI of D+21. The incumbent was Democrat Adam Smith, who had represented the district since 1997. He was re-elected with 73% of the vote in 2016. The 9th was the only district in Washington to have Democrats win both spots in the blanket primary, with 48% of the vote going to the Adam Smith, the incumbent, 27% going to Sarah Smith, a progressive challenger, and 25% going to Doug Blaser, the sole Republican candidate. Incumbent Adam Smith won the general election soundly, receiving 68% of the vote.

### Primary election
#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Adam Smith (incumbent) | 71,035 | 48.4 |
| | Democratic | Sarah Smith | 39,409 | 26.9 |
| | Republican | Doug Basler | 36,254 | 24.7 |
| Total votes | Total votes | Total votes | 146,698 | 100.0 |

### General election
#### Results

Washington's 9th congressional district, 2018 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Adam Smith (incumbent) | 163,345 | 67.9 |
| | Democratic | Sarah Smith | 77,222 | 32.1 |
| Total votes | Total votes | Total votes | 240,567 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## District 10

The 10th congressional district encompasses the state capital of Olympia and surrounding areas. The district had a PVI of D+5. The incumbent was Democrat Denny Heck, who had represented the district since 2013. He was re-elected with 59% of the vote in 2016.

### Primary election
#### Results

Nonpartisan blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Denny Heck (incumbent) | 82,522 | 58.2 |
| | Republican | Joseph Brumbles | 45,260 | 31.9 |
| | Independent Progressive | Tamborine Borrelli | 7,991 | 5.6 |
| | Independent Centrist | Nancy Dailey Slotnick | 6,125 | 4.3 |
| Total votes | Total votes | Total votes | 141,898 | 100.0 |

### General election
#### Results

Washington's 10th congressional district, 2018 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Denny Heck (incumbent) | 166,215 | 61.5 |
| | Republican | Joseph Brumbles | 103,860 | 38.5 |
| Total votes | Total votes | Total votes | 270,075 | 100.0 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |