An office shall be deemed vacant upon the incumbent's death; adjudicated incompetence; conviction of a felony or unlawful destruction of public records; resignation; recall from office; or ceasing to possess the qualifications for the office and, in the case of the mayor or a councilor, the qualifications set forth in Section 9; upon failure of the person elected or appointed to qualify therefor within ten days after the time for that person's office to commence; or in the case of the mayor or a councilor, upon that person's absence from the city for 30 days without the consent of the council or upon that person's absence from meetings of the council for 60 days without like consent, and upon a declaration by the council of the vacancy.
A vacancy on the council shall be filled for the remainder of the unexpired term, if any, at the next election following not less than 60 days upon the occurrence of a vacancy, but the council by a majority vote of all its remaining members shall appoint a qualified person to fill the vacancy until the person elected to serve the remainder of the unexpired term takes office, notwithstanding the quorum requirement in Section 21. If the council fails to do so within 30 days following the occurrence of a vacancy, the city manager or manager's designee shall call an election on the date provided by state law.