Elections for the 75th Oregon Legislative Assembly took place in 2008. The Republican and Democratic primary elections were on May 20, 2008, and the general election was held on November 4, 2008. Fifteen of the Oregon State Senate's thirty seats were up for election, as were all 60 seats of the Oregon House of Representatives. Eighteen incumbent House members and six incumbent Senators earned enough write-in votes in the opposing party's primary to earn a dual endorsement.