Washington's 6th congressional district encompasses the Olympic Peninsula, the Kitsap Peninsula, and most of the city of Tacoma.

Established after the 1930 U.S. census, the 6th district is a working class district, with many of its jobs provided by tourism and the timber industry on the Pacific and Juan de Fuca coasts, and by the Puget Sound Naval Shipyard in Bremerton.

It was one of only two districts in Washington retained by the Democrats in the Republican realignment election of 1994.

Barack Obama swept the district in 2008 and 2012, with 57% of the vote each time.

Hillary Clinton won the district with 52% in 2016, with a diminished, but still large, margin.