The governor, lieutenant governor, secretary of state, treasurer, auditor, attorney general, superintendent of public instruction, commissioner of public lands, and insurance commissioner, shall, before entering upon the duties of their respective offices, take and subscribe an oath or affirmation in substance as follows: I do solemnly swear (or affirm) that I will support the Constitution of the United States and the Constitution and laws of the state of Washington, and that I will faithfully discharge the duties of the office of (name of office) to the best of my ability.
The oath or affirmation shall be administered by one of the justices of the supreme court at the capitol. A certificate shall be affixed thereto by the person administering the oath, and the oath or affirmation so certified shall be filed in the office of the secretary of state before the officer shall be qualified to discharge any official duties: PROVIDED, That the oath of the secretary of state shall be filed in the office of the state auditor.