Each of the officers enumerated in s. 8.25 (4)
(a) or (5) shall take and subscribe the oath of office prescribed by article IV, section 28, of the constitution, as follows: The governor and lieutenant governor, before entering upon the duties of office; the secretary of state, treasurer, attorney general, state superintendent and each district attorney, within 20 days after receiv- 419.10 GENERAL DUTIES OF PUBLIC OFFICIALS ing notice of election and before entering upon the duties of office.