A general election was held in the U.S. state of Washington on November 8, 2016. The primary was held on August 2.
At the time of the filing deadline of May 20, 2016, 682 candidates had filed for 345 offices statewide.
Washington had 12 electoral votes for the presidential election, which were awarded to Hillary Clinton.
Statewide party caucuses and primaries were held in the spring of 2016 to determine the allocation of state delegates to the respective Democratic and Republican party national conventions. Bernie Sanders won the Democratic caucus in March, defeating Hillary Clinton and taking 73 percent of delegates; Donald Trump won the Republican primary, taking 76 percent of delegates. A non-binding primary for the Democratic party held in May resulted in a victory for Hillary Clinton.
All 10 of Washington's seats in the United States House of Representatives were up for re-election. All but one of the incumbents ran for re-election, the exception being Jim McDermott (D) of the 7th district. McDermott's seat was won by Pramila Jayapal (D). The remaining seats were retained by the incumbents.
Incumbent Democratic senior Senator Patty Murray ran for re-election to a fifth term in office, defeating Republican challenger Chris Vance by 18 points.
Incumbent Governor Jay Inslee was re-elected to his second term over Port of Seattle Commissioner Bill Bryant.
Incumbent lieutenant governor Brad Owen, first elected to the office in 1996, announced that he would not seek a sixth term.
Democratic state Senator Cyrus Habib defeated Republican radio host Marty McClendon by nine points to succeed Owen.
Incumbent attorney general Bob Ferguson, elected in 2012 as a Democrat, sought reelection, opposed by Joshua B. Trumbull, who ran as a Libertarian.
Incumbent Secretary of State Kim Wyman, elected in 2012 as the only Republican to hold a statewide office on the West Coast, sought reelection. Former Seattle City Councilmember Tina Podlodowski announced her bid in January 2016, seeking to become the first Democrat to hold the office since 1965. Wyman retained her seat with 55% of the vote.
Incumbent state auditor Troy Kelley, elected as a Democrat in 2012, did not file to run for a second term.
Democratic Pierce County Executive Pat McCarthy defeated Republican state Senator Mark Miloscia to succeed Kelley.
Incumbent James McIntire announced on December 16, 2015, that he would not seek a third term as Washington State Treasurer. Benton County Treasurer Duane Davidson was elected to succeed him.
Incumbent Public Lands Commissioner Peter J. Goldmark, elected in 2008 and reelected in 2012, announced his intention to not seek a third term in office.
Democrat Hilary Franz was elected, defeating Republican Steve McLaughlin with 53% of the vote.
Incumbent Randy Dorn declined to run for a third term as Superintendent of Public Instruction. Nine candidates ran in the nonpartisan election. Erin Jones and Chris Reykdal finished as top two and advanced to the general election. In a close race, Reykdal edged out Jones by one point. Jones conceded the election on November 22.
Mike Kreidler was reelected to his fifth term.
Twenty-five of the forty-nine seats in the Washington State Senate were up for election. Republicans held a narrow majority in the Senate, taking 26 seats compared to 23 for the Democrats. Seven incumbent senators retired, creating vacancies that had the potential to swing the split of party votes. A Democrat defeated the Republican incumbent in District 41, leaving Republicans with a one-seat majority.
All 98 seats in the Washington House of Representatives were up for election. The outgoing House had a narrow Democratic majority, with 50 seats compared to the Republicans' 48. Both parties picked up seats from the other party, resulting in the same overall composition.