The Mayor or a Councilor office becomes vacant:
(a) Upon the incumbent’s:
(1) Death,
(2) Adjudicated incompetence, or
(3) Recall from the office.
(b) Upon declaration by the Council after the incumbent’s:
(1) Failure to qualify for the office within 10 days prior to the time the term of office is to begin,
(2) Absence from the City for 30 days or from all Council meetings within a 45-day period, without Council consent,
(3) Ceasing to reside in the City,
(4) Ceasing to be a qualified elector under State law,
(5) Conviction of a public offense punishable by loss of liberty,
(6) Resignation from the office, or
(7) Violation of Section 33(i).