[2] Summary of votes cast in the general election Democrat Jay Inslee, who represented the 1st district starting in 1999, resigned March 20, 2012, to focus on his run for governor of Washington.

[4] Republican John Koster and Democrat Suzan DelBene received the most votes in the nonpartisan blanket primary on August 7 for both the brief period of office remaining in the old 1st district and the redistricted 1st district,[20] and faced each other in two separate ballot positions, with different boundaries, in the special election on November 6.

Organizations DelBene won[33] and was sworn in to serve the remainder of Inslee's term on November 13, 2012.

[50] Democrat Norm Dicks, who represented the 6th district since 1977, decided to retire rather than seeking re-election.

[35] The newly created 10th district is centred on the state capital, Olympia, and includes portions of Thurston, Pierce, and Mason counties.