Wash. Const. art. XXVII, § 14

DURATION OF TERM OF CERTAIN OFFICERS. All district, county and precinct officers, who may be in office at the time of the adoption of this Constitution, and the county clerk of each county elected at the first election, shall hold their respective offices until the second Monday of January, A. D., 1891, and until such time as their successors may be elected and qualified, in accordance with the provisions of this Constitution; and the official bonds of all such officers shall continue in full force and effect as though this Constitution had not been adopted. And such officers shall continue to receive the compensation now provided, until the same be changed by law.