# Maria Cantwell

Maria Ellen Cantwell (/ˈkæntˌwɛl/; born October 13, 1958) is an American politician who is the junior United States senator from Washington since 2001. A member of the Democratic Party, she served in the Washington House of Representatives from 1987 to 1993, and in the United States House of Representatives from 1993 to 1995.
Born and raised in Indianapolis, Indiana, Cantwell graduated from Miami University before moving to Seattle to work on Alan Cranston's 1984 presidential campaign. In 1986, she was elected to the state house of representatives, where she served until her election to Congress in 1992. Cantwell served one term in Congress before losing her seat to Republican Rick White in the 1994 election. She then briefly worked in the private sector as vice president of marketing for RealNetworks.
Despite having vowed to remain out of politics, Cantwell ran for the United States Senate in 2000. She defeated Republican incumbent Slade Gorton in one of the closest elections in the state's history. Cantwell was reelected in 2006, 2012, 2018, and 2024. After Jeff Sessions resigned from the Senate in February 2017 to become United States Attorney General, Cantwell became the most senior junior senator. She is the second female senator from Washington, after Patty Murray.

## Early life, education, and early political career

Cantwell was born in Indianapolis, Indiana. She was raised in a predominantly Irish American neighborhood on the south side of Indianapolis. Her father, Paul Cantwell, served as county commissioner, city councilor, state legislator, and chief of staff for U.S. Representative Andrew Jacobs Jr.; he was the Democratic nominee for Mayor of Indianapolis in 1979. Her mother, Rose, was an administrative assistant. Her ancestry includes Irish and German.
Cantwell attended Emmerich Manual High School, and was inducted into the Indianapolis Public Schools Hall of Fame in 2006. After high school, Cantwell attended Miami University in Oxford, Ohio, where she earned her Bachelor of Arts degree in public administration.
A year after graduating, Cantwell worked on Jerry Springer's unsuccessful 1982 Ohio gubernatorial campaign. Cantwell moved to Seattle, Washington, in 1983, to campaign for U.S. Senator Alan Cranston (D-CA) in his unsuccessful bid for the 1984 Democratic presidential nomination. She then moved to the Seattle suburb of Mountlake Terrace, because it reminded her of Indianapolis, and led a successful campaign in 1986 to build a new library there. As of 2000, Cantwell lived in Edmonds, Washington with her mother.

## Washington House of Representatives (1987–1993)
### Elections

In 1986, Cantwell was elected to the Washington State House of Representatives at the age of 28. She defeated George Dahlquist 54%–46%. In 1988, she was reelected with 66% of the vote. In 1990, she was reelected to a third term with 61% of the vote.

### Tenure

As a state representative, Cantwell helped write Washington's Growth Management Act of 1990, which required cities to develop comprehensive growth plans, and she negotiated its passage. She also worked on legislation regulating nursing homes. Cantwell resigned on January 3, 1993, in preparation to be sworn in as a member of the United States House of Representatives.

## U.S. House of Representatives (1993–1995)
### Elections
#### 1992

In the November election, Cantwell defeated Republican State Senator Gary A. Nelson 55%–42%. She became the first Democrat elected to the United States House of Representatives from Washington's first congressional district in 40 years.

#### 1994

Republican Rick White defeated Cantwell 52%–48% in the 1994 United States House of Representatives elections. Before that year's "Republican Revolution", eight of the nine representatives from the Washington state delegation were from the Democratic Party. After the election, five Democratic representatives from Washington state lost their positions, despite running for re-election, including Cantwell, future governor Jay Inslee, and Speaker of the House Tom Foley.

### Tenure

Cantwell was called a "savvy, pro-business Democrat". She supported President Clinton's 1993 budget, which raised taxes and passed without the votes of many Democrats. During her only term, she helped persuade the Clinton administration to terminate its support of the Clipper chip. She wrote a letter to Vice President Al Gore and staunchly opposed it because Microsoft Inc. was in her district. She voted for the North American Free Trade Agreement (NAFTA).

### Committee assignments

* Public Works
* Foreign Affairs
* Merchant Marine and Fisheries

## Private sector employment (1995–1999)

After her defeat, Cantwell vowed to leave politics. Political ally Rob Glaser offered her a job as vice president of marketing for RealNetworks. Among her accomplishments was the live internet streaming broadcast of a Mariners-Yankees baseball game in 1995, which marked the start of internet broadcasts of Major League Baseball games.
In 1998, the company was criticized by privacy groups, which alleged that the RealJukebox software program incorporated spyware to track unsuspecting users' listening patterns and download history. In response, RealNetworks amended its privacy policy to fully disclose its privacy practices regarding user listening patterns. Subsequently, RealNetworks submitted to independent outside audits of its privacy practices. Several lawsuits regarding alleged privacy violations were settled out of court. This incident has shaped her views on privacy and her opposition to the Bush administration's post-9/11 policies.

## U.S. Senate (2001–present)
### Elections
#### 2000

At the urging of party activists and officials, Cantwell formed an exploratory committee in October 1999 to consider a run for U.S. Senate against Democrat Insurance Commissioner Deborah Senn and incumbent Republican Senator Slade Gorton. She committed to the race on January 19, 2000. Cantwell entered the campaign a year after Senn, who was endorsed by the Washington State Labor Council and NARAL, and used her personal wealth to fund television advertisements. Early on, privacy became an issue; Senn cited her record protecting medical privacy as insurance commissioner, while Cantwell promoted internet privacy and cited her opposition to the Clipper chip. Senn later used television advertisements to accuse Cantwell of avoiding debates, as she had agreed to two debates while Senn preferred more. They participated in three debates, during which they attacked each other. Senn attacked RealNetworks and Cantwell's role in the company; Cantwell accused Senn of wanting to run against RealNetworks, and said that Senn was uninformed on internet issues. Cantwell was endorsed by The Seattle Times, the Seattle Post-Intelligencer, The Spokesman-Review, and The News Tribune. She easily won her party's nomination, defeating Senn by a 3–1 margin in the primary. Although he won re-nomination, Gorton got fewer votes than Cantwell and Senn's combined total.
Social security, prescription drugs, dams, gun control, and campaign finance reform were among the most important issues in Cantwell's race against Gorton, which drew national attention. Cantwell also adopted the slogan "Your voice for a change", a veiled reference to Gorton's campaign theme in 1980, challenging incumbent Warren Magnuson's age. She said Gorton supported "19th-century solutions to 21st-century problems". Cantwell was endorsed by The Seattle Times and the Seattle Post-Intelligencer, the state's two biggest newspapers. Gorton was endorsed by the smaller The News Tribune and two of the largest Eastern Washington newspapers, The Spokesman-Review and Tri-City Herald. At times, the campaign was accused of pettiness as national PACs and groups funded television attack advertisements. After a Cantwell campaign worker deep-linked to a humorous photo on Gorton's website, he accused Cantwell's campaign of hacking, and Senn accused Cantwell of hypocrisy. "Fiddling with people's websites and calling it good fun ... adds a very childish and unworthy character to the race", Senn's campaign spokeswoman Barbara Stenson said. Cantwell spent over $10 million of her own money on her campaign, pledging not to accept money from PACs. When RealNetworks stock declined at the end of 2000, she spent time raising funds for debt retirement, but kept her pledge not to accept PAC money. In the waning weeks of the campaign, the Federal Election Commission ruled that Cantwell violated federal campaign finance law by securing $3.8 million in bank loans for her campaign and failing to properly disclose the loans until January 30, 2001. The complaint alleged that she had received a $600,000 line of credit without sufficient collateral, and another $1,000,000, all at a preferential interest rate. After review, the Federal Election Commission sent a letter of admonishment, saying that the loans were "made on a basis that assures repayment, and that each loan bore the usual and customary interest rate".
The election was among the closest in Washington history. Cantwell held a tiny lead in the initial returns on election night, but the race remained too close to call. Gorton overtook her the next day, amassing a lead of 12,500 votes by the second week of absentee ballot counting. The election result was certified on November 22 with a lead of 1,953 votes for Cantwell out of 2.5 million cast, credited to support from the Puget Sound region. The 0.08% margin triggered an automatic recount, which increased her lead to 2,229 votes, or 0.09%. It was the last Senate race to be called in the 2000 election, which resulted in a 50–50 tie ahead of a contentious presidential election recount. Cantwell and Debbie Stabenow of Michigan became the third and fourth women to defeat incumbent senators, following Kay Bailey Hutchison's 1993 and Dianne Feinstein's 1992 special-election victories.

#### 2006

The close 2004 gubernatorial race between Democrat Christine Gregoire and Republican Dino Rossi suggested to many that the 2006 contest might go either way. Both Cantwell and her opponent Republican Mike McGavick dominated their primaries; initial speculation favored a Republican victory. "At one point", wrote analyst Larry Sabato, "all the talk in this race concerned Cantwell's cool relations with anti-war Democratic elements and McGavick's relatively united base. But Democrats appear to have closed ranks behind their junior senator." Cantwell was reelected by a 17-point margin, even winning several traditionally Republican counties in Eastern Washington, including Spokane County.
During the 2006 campaign, Cantwell received heavy criticism for declining most of the invitations she received to debate McGavick in public fora. Media outlets across the state, including The Olympian and the Yakima Herald-Republic, rebuked her, claiming she was afraid to confront McGavick, calling it "unacceptable" and "simply not fair". Cantwell agreed to two debates with McGavick in Seattle and Spokane, lasting 60 and 30 minutes, respectively. When she ran for Senate in 2000 against Gorton, Gorton also agreed to only two debates of a similar format. Similarly, when Washington's senior senator, Patty Murray, ran for reelection in 2004, she agreed to only two debates with George Nethercutt, although each debate lasted an hour.

#### 2012

Cantwell was reelected to a third term, defeating Republican State Senator Michael Baumgartner.

#### 2018

Cantwell was reelected to a fourth term, defeating Republican Susan Hutchison.

#### 2024

Cantwell was reelected to a fifth term, defeating Republican Raul Garcia.

### Tenure

Cantwell was a proponent of the McCain-Feingold campaign finance reform bill of 2002, and co-sponsored the Clean Money, Clean Elections Act of 2001. In 2005, she wrote a letter in support of the Perkins Loan program, and told the Seattle Times in July 2006 that she opposed Social Security privatization. Cantwell co-sponsored the "Pension Fairness and Full Disclosure Act of 2005".
Also in 2005, Cantwell voted for the Central America Free Trade Agreement (CAFTA), which angered many who opposed free trade agreements. Others argued that due to the state's unique economy, any senator from Washington almost had to vote for free trade pacts.
Cantwell was one of 22 senators to vote not to confirm United States Supreme Court nominee John Roberts, citing his potential views on abortion and the environment. In January 2006, after publicly announcing her opposition to Supreme Court nominee Samuel Alito, Cantwell, 18 other Democrats and all 53 present Republicans, voted for the cloture motion. The success of this motion ended an unlikely attempt to filibuster Alito's confirmation led by Senators John Kerry and Ted Kennedy. Alito was confirmed the next day by a vote of 58–42, with most Democrats, including Cantwell, voting against confirmation.
In 2010, Cantwell voted to invoke cloture to begin debate on the Don't ask, don't tell policy in the military.
In the 2016 United States presidential election, Cantwell received one electoral vote for vice president from a faithless elector in Washington.
Cantwell has led efforts to improve internet privacy laws.
In 2024, Cantwell crafted legislation to require airline passengers to request a refund for a canceled flight rather than automatically receiving one.

#### Abortion and contraceptives

Cantwell has expressed support for making Plan B contraceptives available to girls 16 and under. In 2007, she co-sponsored the Prevention First Act, a bill that sought to increase national access to family planning and preventative methods as a means to reduce unwanted pregnancies. It included giving women access to Plan B, as well as expanding Medicaid to cover family planning. As an advocate of increasing access to family planning and sexual health education, Cantwell argues that these venues for increased education are necessary to reduce unwanted pregnancies. She was criticized by her Republican challenger, State Senator Michael Baumgartner, who suggested that she was too extreme and too far to the left of Washington voters on this issue, and expressed concern about 11-year-olds getting these drugs without a prescription.
Cantwell calls herself "100% pro-choice", and consistently supports the pro-choice movement's positions. She was one of 34 senators to vote against the Partial-Birth Abortion Ban Act of 2003, which President George W. Bush signed into law. She also voted against the Unborn Victims of Violence Act, which made it an additional crime to kill or harm a fetus during a criminal assault upon the mother. That bill passed the Senate by a vote of 61–38, and was signed into law by Bush in 2004.

#### Environment and energy

Cantwell opposed drilling in the Arctic National Wildlife Refuge (ANWR), and was one of the most vocal critics of the increase of oil and gasoline prices during 2008. Advocating increased regulation of futures markets and windfall profits taxes on oil profits, she has drawn scathing criticism from the Wall Street Journal. In 2005, Cantwell scored what many perceived as one of the biggest victories of her first term when she blocked Senator Ted Stevens's efforts to allow drilling in ANWR. Stevens attached the measure to a bill that provided money for defense spending and Hurricane Katrina recovery efforts. Cantwell rounded up the votes of 41 Democrats and three Republicans, enough to block a final vote. Stevens removed the ANWR drilling measure from the larger bill, promising to bring the matter up at a later date.
In 2004, Cantwell received the highest rating possible from the League of Conservation Voters for her environmental voting record. As of 2020, she has a lifetime score of 93% on the League's National Environmental Scorecard. She is known for supporting alternative energy research and for protecting Washington's forests from logging and the construction of paved roads and has been endorsed by various prominent environmental advocacy groups. She has opposed drilling in ANWR on multiple occasions, has voted to reduce oil usage by 40% by 2025, and has opposed legislation to relax or terminate CAFE standards. The Seattle Times has called Cantwell's environmental record "pristine", and the Wilderness Society has called her an "environmental champion".
In 2009, Cantwell introduced the Carbon Limits and Energy for America's Renewal (CLEAR) Act (S. 2877), also called the Cantwell-Collins bill, a "cap and dividend" emissions trading proposal. Senator Susan Collins co-sponsored it. The bill died in the Senate Finance Committee without debate or votes.
Cantwell chaired the Senate Democrats 20/20 Energy Independence campaign and co-chaired the Apollo Alliance in 2006. One of her main accomplishments was the passage of an amendment "To prevent energy market manipulation", which passed 57–40 in the Senate in November 2006; a previous effort was defeated by a vote of 50–48.
In 2011, The Humane Society of the United States praised Cantwell's no-tolerance policy and effective removal of the practice of shark finning, which kills an estimated 73 million sharks per year.
In February 2019, in response to reports that the EPA intended to decide against setting limits for perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) in drinking water as part of an upcoming national strategy to manage the chemicals, Cantwell was one of 20 senators to sign a letter to Acting EPA Administrator Andrew R. Wheeler calling on the EPA "to develop enforceable federal drinking water standards for PFOA and PFOS, as well as institute immediate actions to protect the public from contamination from additional per- and polyfluoroalkyl substances (PFAS)."
In September 2019, Cantwell was one of eight senators to sign a bipartisan letter to congressional leadership, requesting full and lasting funding of the Land and Water Conservation Act, in order to aid national parks and public lands, benefit the $887 billion American outdoor recreation economy, and "ensure much-needed investment in our public lands and continuity for the state, tribal, and non-federal partners who depend on them".

#### Foreign policy
##### Criticism of Amanda Knox's wrongful conviction

On December 4, 2009, the day that an Italian court wrongly convicted 22-year-old Washingtonian Amanda Knox of the murder of Meredith Kercher, Cantwell released a statement expressing her dismay, saying she had "serious questions about the Italian justice system and whether anti-Americanism tainted [the] trial." She called the evidence against Knox insufficient, said Knox had been subjected to "harsh treatment" after her arrest, and said there had been "negligence" in the handling of evidence. She also complained that jurors had not been sequestered, allowing them to view "negative news coverage" about Knox, and that one of the prosecutors had a misconduct case pending in relation to another trial. Cantwell said she would seek assistance from Secretary of State Hillary Clinton. A State Department spokesman said in December 2009 that the department had followed the case closely and would continue to do so. He added: "It is still in the early days but ... we haven't received any indications necessarily that Italian law was not followed." Knox was later exonerated.

##### Iraq War

On October 11, 2002, Cantwell voted in favor of the Joint Resolution to Authorize the Use of United States Armed Forces Against Iraq. Her October 10, 2002, press release, quotes her as stating on the floor of the U.S. Senate, "Mr. President, my vote for this resolution does not mean that I am convinced of the Administration has answered all the questions. I believe the following issues must be addressed before the U.N. or the U.S. move forward with military action." Cantwell detailed six specific areas in which her questions and concerns had yet to be satisfactorily addressed at the time of her vote to authorize war: "First: Continued Multilateral Approach ... Second: Successful Military Strategy ... Third: A Post-War Commitment Strategy ... Fourth: Fighting the Broader War on Terrorism ... Fifth: Maintaining Middle East Stability ... Sixth: Protecting Iraqi Civilians."
In 2006, Cantwell voted against the Kerry-Feingold Amendment to S. 2766, which would have set a timetable for withdrawal, but for the Levin-Reed Amendment, which would encourage beginning a phased withdrawal by the end of the year, with no timetable for completion.

##### Israel

In April 2017, Cantwell co-sponsored the Israel Anti-Boycott Act (S.270), which would have made it a federal crime, punishable by a maximum sentence of 20 years imprisonment, for Americans to encourage or participate in boycotts against Israel and Israeli settlements in the occupied Palestinian territories if protesting actions by the Israeli government.

#### Health care reform

Cantwell supports health care reform in the United States, and was a co-sponsor of Senator Ron Wyden's Healthy Americans Act. In her role as a member of the Finance Committee, she had an influential role in crafting health care reform legislation. On September 29, 2009, when the Finance Committee considered health care reform legislation, Cantwell supported amendments to establish a public health care option that would compete with private insurers.
In 2009, The Stranger ran an article on Cantwell's opposition to the inclusion of a public option in the health-care reform plan. They reported: "Seattle congressman Jim McDermott supports it. Washington senator Patty Murray wants it. So does President Barack Obama. So does the often conservative Seattle Times editorial page. So do 72 percent of Americans, according to a recent poll. So what's going on with Washington's junior senator, Maria Cantwell? Why doesn't she want Congress to include a public option — a new government-run health-care plan that will be available to everyone, and will compete with private insurance companies to bring down costs — in its health-care-reform package?" Cantwell cited her concerns with getting the bill through the Senate as the reason for her opposition.

#### LGBTQ+ Rights

In 2022, Cantwell voted for the Respect for Marriage Act, legislation intended to codify same-sex marriage rights into federal law.

#### Immigration

In 2006, Cantwell, along with 38 of 44 Senate Democrats, voted for the Comprehensive Immigration Reform Act of 2006 (S. 2611). This legislation included provisions to improve border security, increased fines and other punishments for employers of illegal immigrants, created a guest worker program (which included a near doubling of the number of H1-B visas), and created a path to citizenship for illegal immigrants already in the country. The bill, with support from Republican leadership, passed 62–36. Debate would have also commenced on the DREAM Act, but was halted by a Republican filibuster.

#### Minimum wage

In March 2021, Cantwell was among the 42 Democrats to vote unsuccessfully to include a $15 hourly minimum wage in the American Rescue Plan.

#### Sexual abuse in Olympic sports

Cantwell chairs the Senate Commerce, Science, and Transportation Committee, which has jurisdiction over the United States Olympic & Paralympic Committee (USOPC), the United States Center for SafeSport (SafeSport), and the issue of sexual abuse in Olympic sports. She has praised the Protecting Young Victims from Sexual Abuse and Safe Sport Authorization Act of 2017, crafted to protect athletes from emotional and physical abuse and harassment, which created SafeSport to prevent and respond to misconduct.

#### Support for fellow Democrats

Cantwell is a major supporter of fellow Democratic candidates for public office. In 2006, facing her own challenging race, she used ActBlue to raise $100,000 for Darcy Burner, Peter J. Goldmark, and Richard Wright, all of whom were facing difficult House races in Washington. In the 2008 cycle, Cantwell was particularly committed to supporting Senator Mary Landrieu's reelection.
On December 31, 2007, Cantwell became the 10th senator to endorse Hillary Clinton for President of the United States. She supported Clinton throughout the primaries, but vowed to vote for the winner of the pledged delegates. After Clinton conceded on June 7, Cantwell endorsed Obama. At the Washington State Democratic Convention on June 15, she said: "I do want to see a strong Democratic woman in the White House ... That's why I'm so glad Michelle Obama will be the next first lady."
On October 20, 2013, Cantwell was one of 16 female Democratic senators to sign a letter endorsing Hillary Clinton as the Democratic nominee in the 2016 presidential election.

### Committee assignments

Cantwell's committee assignments for the 118th Congress are as follows:
* Committee on Commerce, Science and Transportation (Chair)
** As Chair, Cantwell is an ex officio member of all subcommittees.
* Committee on Energy and Natural Resources
* Committee on Finance
** Subcommittee on Energy, Natural Resources, and Infrastructure
** Subcommittee on Health Care
** Subcommittee on Taxation and IRS Oversight
* Committee on Indian Affairs
* Committee on Small Business and Entrepreneurship
* Joint Committee on Taxation

### Caucus memberships

* Congressional Caucus for Women's Issues
* Congressional Hazards Caucus
* Congressional Internet Caucus
* Congressional Wine Caucus
* Senate National Guard Caucus
* Senate New Democrat Coalition
* Senate Steel Caucus

## Personal life

In 2006, it emerged that court files concerning a loan Cantwell made in 2001 to her former boyfriend, boss, and campaign manager, lobbyist Ron Dotzauer, to help him through his divorce litigation, had been sealed. A Sound Politics reporter had the file unsealed and discovered that Cantwell was identified in the divorce records "as the 'other woman'".
Cantwell was also formerly in a relationship with Seattle-based track and cross country star Scott Daggatt, then serving as a stockbroker of a Seattle-based National Securities Corporation.
Owing to a sharp decrease in the value of her RealNetworks stock, Cantwell's personal fortune had declined significantly by 2011.

## Electoral history

1986 Washington's 44th state house district results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Maria Cantwell | 14,936 | 54.24% |
| | Republican | George Dahlquist | 12,600 | 45.76% |
| Total votes | Total votes | Total votes | 27,536 | 100% |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |
1988 Washington's 44th state house district results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Maria Cantwell (incumbent) | 28,381 | 65.56% |
| | Republican | Robert Grupe | 14,908 | 34.44% |
| Total votes | Total votes | Total votes | 43,289 | 100% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |
1990 Washington's 44th state house district results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Maria Cantwell (incumbent) | 18,745 | 61.13% |
| | Republican | Joyce Meyerson | 11,917 | 38.87% |
| Total votes | Total votes | Total votes | 30,662 | 100% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |
1992 Washington's 1st congressional district results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Maria Cantwell | 148,844 | 54.87% |
| | Republican | Gary Nelson | 113,897 | 41.99% |
| | Independent | Patrick Ruckert | 4,322 | 1.59% |
| | Natural Law | Anne Fleming | 4,211 | 1.55% |
| Total votes | Total votes | Total votes | 271,274 | 100% |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |
1994 Washington's 1st congressional district results :
| Party | Party | Candidate | Votes | % |
| | Republican | Rick White | 100,554 | 51.66% |
| | Democratic | Maria Cantwell (incumbent) | 94,110 | 48.34% |
| Total votes | Total votes | Total votes | 194,664 | 100% |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |
2000 Washington US Senate general election results :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Maria Cantwell | 1,199,437 | 48.73% | +4.48% |
| | Republican | Slade Gorton (incumbent) | 1,197,208 | 48.64% | −7.11% |
| | Libertarian | Jeff Jared | 64,734 | 2.63% | +2.6% |
| Plurality | Plurality | Plurality | 2,229 | 0.09% | |
| Turnout | Turnout | Turnout | 2,461,379 | 100% | +761,206 |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |
2006 Washington US Senate Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Maria Cantwell (Incumbent) | 570,677 | 90.76% |
| | Democratic | Hong Tran | 33,124 | 5.27% |
| | Democratic | Mike The Mover | 11,274 | 1.79% |
| | Democratic | Michael Goodspaceguy Nelson | 9,454 | 1.50% |
| | Democratic | Mohammad H. Said | 4,222 | 0.67% |
| Total votes | Total votes | Total votes | 628,751 | 100.00% |
2006 Washington US Senate general election results :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Maria Cantwell (Incumbent) | 1,184,659 | 56.81% | +8.08 |
| | Republican | Mike McGavick | 832,106 | 39.91% | −8.73 |
| | Libertarian | Bruce Guthrie | 29,331 | 1.41% | −1.22 |
| | Green | Aaron Dixon | 21,254 | 1.02% | n/a |
| | Independent | Robin Adair | 16,384 | 0.79% | n/a |
| | Write-in | Write-in | 1,445 | 0.07% | n/a |
| Majority | Majority | Majority | 343,084 | 16.90% | |
| Turnout | Turnout | Turnout | 2,085,179 | 63.81% | |
| | Democratic hold | Democratic hold | Swing | +8.37 | |
2012 Washington US Senate blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Maria Cantwell (incumbent) | 626,360 | 55.42 |
| | Republican | Michael Baumgartner | 344,729 | 30.50 |
| | Republican | Art Coday | 59,255 | 5.24 |
| | Democratic | Timothy Wilson | 26,850 | 2.38 |
| | Republican | Chuck Jackson | 21,870 | 1.94 |
| | Republican | Glenn R. Stockwell | 21,731 | 1.92 |
| | Republican | Mike The Mover | 16,459 | 1.46 |
| | Reform | Will Baker | 12,865 | 1.14 |
| Total votes | Total votes | Total votes | 1,130,119 | 100.00 |
2012 Washington US Senate general election results :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Maria Cantwell (incumbent) | 1,855,493 | 60.45% | +3.64% |
| | Republican | Michael Baumgartner | 1,213,924 | 39.55% | −0.36% |
| Total votes | Total votes | Total votes | 3,069,417 | 100.00% | N/A |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |
2018 Washington US Senate blanket primary results :
| Party | 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 | Michael Goodspaceguy Nelson | 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 | Total votes | Total votes | 1,700,840 | 100.00% |
2018 Washington US Senate general election results :
| Party | 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 | Total votes | Total votes | 3,086,168 | 100.00% | N/A |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |
2024 Washington US Senate blanket primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Maria Cantwell (incumbent) | 1,114,327 | 57.18% |
| | Republican | Raul Garcia | 431,182 | 22.13% |
| | Republican | Scott Nazarino | 111,386 | 5.72% |
| | Republican | Isaak Holyk | 110,701 | 5.68% |
| | Republican | Mel Ram | 86,956 | 4.46% |
| | Independent | Chuck Jackson | 21,055 | 1.08% |
| | Independent | David Tilton | 17,561 | 0.90% |
| | Democratic | Paul Giesick | 17,433 | 0.89% |
| | Republican | Goodspaceguy | 16,826 | 0.86% |
| | Independent | Thor Amundson | 10,587 | 0.54% |
| | Socialist Workers | Henry Dennison | 7,840 | 0.40% |
| | Write-in | Write-in | 2,862 | 0.15% |
| Total votes | Total votes | Total votes | 1,948,716 | 100% |
2024 Washington US Senate general election results :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Maria Cantwell (incumbent) | 2,252,577 | 59.09% | +0.66% |
| | Republican | Raul Garcia | 1,549,187 | 40.64% | −0.93% |
| | Write-in | Write-in | 10,627 | 0.28% | N/A |
| Total votes | Total votes | Total votes | 3,812,391 | 100.00% | N/A |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold | Democratic hold |