Dow Constantine was elected King County Executive in November 2009 and took office that same month. He was a member of the King County Council for eight years and previously served in both the Washington State House of Representatives and State Senate.

A Seattle native, Dow graduated from West Seattle High School and the University of Washington. He earned University of Washington post-graduate degrees in law (1989) and urban planning (1992).

Throughout his public service career, Dow has been an outspoken advocate for environmental protection, public transit, and government reform.