Voters in 26 of Washington's 49 legislative districts voted for their state senators in the 2008 Washington State Senate elections on November 4, 2008. All vote totals are from the Washington Secretary of State's website.
25 seats were regularly scheduled to be up this cycle, along with 1 additional seat holding a special election to fill an unexpired term: the 34th district, held by appointed Senator Joe McDermott, whose former incumbent Erik Poulsen vacated the seat.
These are the final, official results as taken from the website of the Secretary of State of Washington.
Representative Fred Jarrett switched to the Democratic Party.