2018 United States Senate election in Washington
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The 2018 United States Senate election in Washington took place on November 6, 2018, to elect a member of the United States Senate to represent the State of Washington. Incumbent Democrat Maria Cantwell won election to a fourth term over television news journalist Susan Hutchison, a Republican.
November 6, 2018
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Cantwell: 50–60% 60–70% 70–80% 80–90% >90% Hutchison: 50–60% 60–70% 70–80% 80–90% >90% Tie: 50% No votes | |||||||||||||||||
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Nonpartisan blanket primary
Candidates
The primary election featured 30 candidates.[1]
Democratic Party
Declared
- Maria Cantwell, incumbent senator[2]
- George H. Kalberer
- Don L. Rivers[3]
- Mohammad Said
- Clint Tannehill[4]
Republican Party
Declared
- Dave Bryant
- Art Coday
- Rocky De La Fuente, businessman and former presidential candidate[5]
- Joey Gibson, activist and founder of Patriot Prayer[6]
- Goodspaceguy, perennial candidate[7]
- Matt Hawkins
- Matthew D. Heines
- Susan Hutchison, former chair of the Washington State Republican Party[8]
- John Orlinski
- Tim Owen
- RC Smith
- Glen Stockwell
- Keith Swank
Withdrawn
- Ron Higgins (withdrew May 19, 2018[9])
Endorsements
Independents
Declared
Write-in
- Clay Johnson, activist[13]
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
- Brad Chase (FDFR Party[a]), communications strategist[1]
- James Robert "Jimmie" Deal (Green Party)
- Steve Hoffman (Freedom Socialist Party), union organizer[15][16]
- Mike Luke (Libertarian Party)[17]
- Alex Tsimerman (StandupAmerica)[18]
- Sam Wright (The Human Rights Party)
Notes
Results

Cantwell
- 30–40%
- 40–50%
- 50–60%
- 60–70%
Hutchison
- 30–40%
- 40–50%
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Maria Cantwell (incumbent) | 929,961 | 54.68% | |
| Republican | Susan Hutchison | 413,317 | 24.30% | |
| Republican | Keith Swank | 39,818 | 2.34% | |
| Republican | Joey Gibson | 38,676 | 2.27% | |
| Democratic | Clint Tannehill | 35,770 | 2.10% | |
| Republican | Dave Bryant | 33,962 | 2.00% | |
| Republican | Art Coday | 30,654 | 1.80% | |
| Independent | Jennifer Gigi Ferguson | 25,224 | 1.48% | |
| Republican | Tim Owen | 23,167 | 1.36% | |
| Republican | Matt Hawkins | 13,324 | 0.78% | |
| Democratic | Don L. Rivers | 12,634 | 0.74% | |
| Libertarian | Mike Luke | 12,302 | 0.72% | |
| Republican | Glen R. Stockwell | 11,611 | 0.68% | |
| Independent | Thor Amundson | 9,393 | 0.55% | |
| Democratic | Mohammad Said | 8,649 | 0.51% | |
| Republican | Matthew D. Heines | 7,737 | 0.45% | |
| Freedom Socialist | Steve Hoffman | 7,390 | 0.43% | |
| Republican | GoodSpaceGuy | 7,057 | 0.41% | |
| Republican | John Orlinski | 6,905 | 0.41% | |
| Independent | Dave Strider | 6,821 | 0.40% | |
| Republican | Roque "Rocky" De La Fuente | 5,724 | 0.34% | |
| Green | James Robert "Jimmie" Deal | 3,849 | 0.23% | |
| The Human Rights Party | Sam Wright | 3,761 | 0.22% | |
| FDFR Party | Brad Chase | 2,655 | 0.16% | |
| Democratic | George H. Kalberer | 2,448 | 0.14% | |
| Independent | Charlie R. Jackson | 2,411 | 0.14% | |
| Republican | R. C. Smith | 2,238 | 0.13% | |
| Independent | Jon Butler | 2,016 | 0.12% | |
| StandUpAmerica | Alex Tsimerman | 1,366 | 0.08% | |
| Total votes | 1,700,840 | 100.00% | ||
General election
Debates
| No. | Date | Host | Moderator | Link | Democratic | Republican |
|---|---|---|---|---|---|---|
| Key: P Participant A Absent N Not invited I Invited W Withdrawn |
||||||
| Maria Cantwell | Susan Hutchison | |||||
| 1 | Oct. 8, 2018 | KOMO-TV Pacific Lutheran University |
Mary Nam Essex Porter |
[20] | P | P |
| 2 | Oct. 20, 2018 | Community Colleges of Spokane Gonzaga University Eastern Washington University University of Washington Washington State University Spokane Whitworth University |
Hayley Guenthner Jane McCarthy |
[21] | P | P |
Predictions
| Source | Ranking | As of |
|---|---|---|
| The Cook Political Report[22] | Safe D | October 26, 2018 |
| Inside Elections[23] | Safe D | November 1, 2018 |
| Sabato's Crystal Ball[24] | Safe D | November 5, 2018 |
| Fox News[25] | Likely D | July 9, 2018 |
| CNN[26] | Safe D | July 12, 2018 |
| RealClearPolitics[27] | Safe D | November 5, 2018 |
Post-primary endorsements
Maria Cantwell (D)
- Newspapers
Polling
View source data.
Hypothetical polling
Maria Cantwell vs. Rob McKenna
| Poll source | Date(s) administered |
Sample size[a] |
Margin of error |
Maria Cantwell (D) |
Rob McKenna (R) |
Undecided |
|---|---|---|---|---|---|---|
| Public Policy Polling (D)[31][A] | June 27–28, 2017 | 887 (LV) | ± 3.3% | 53% | 40% | 6% |
Results
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Democratic | Maria Cantwell (incumbent) | 1,803,364 | 58.43% | −2.02% | |
| Republican | Susan Hutchison | 1,282,804 | 41.57% | +2.02% | |
| Total votes | 3,086,168 | 100.00% | N/A | ||
| Democratic hold | |||||
By county
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Counties that flipped from Democratic to Republican
Counties that flipped from Republican to Democratic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
By congressional district
Cantwell won seven of ten congressional districts.[34]
| District | Cantwell | Hutchison | Representative |
|---|---|---|---|
| 1st | 57% | 43% | Suzan DelBene |
| 2nd | 61% | 39% | Rick Larsen |
| 3rd | 49% | 51% | Jaime Herrera Beutler |
| 4th | 38% | 62% | Dan Newhouse |
| 5th | 47% | 53% | Cathy McMorris Rodgers |
| 6th | 57% | 43% | Derek Kilmer |
| 7th | 84% | 16% | Pramila Jayapal |
| 8th | 51% | 49% | Kim Schrier |
| 9th | 73% | 27% | Adam Smith |
| 10th | 56% | 44% | Denny Heck |