The Washington State Senate is the upper house of the Washington State Legislature. The body consists of 49 members, each representing a district with a population of nearly 160,000. The State Senate meets at the Legislative Building in Olympia.

The Washington State Legislature is the state legislature of the U.S. state of Washington. It is a bicameral body, composed of the lower Washington House of Representatives, composed of 98 Representatives, and the upper Washington State Senate, with 49 Senators plus the Lieutenant Governor acting as president. The state is divided into 49 legislative districts, each of which elect one senator and two representatives.