(a) Vacancies. A vacancy shall be deemed to exist on the Commission if a member vacates the office as determined by state law or fails to maintain the qualifications for office as prescribed by this Charter or law.
(b) Filling of vacancies. Any vacancy in the Commission shall be filled by the concurring vote of at least four (4) remaining members of the Commission within ninety (90) days after the vacancy occurs. The appointee shall serve until the next regular city election following the appointment, at which election a successor shall be elected for the unexpired term or, if none, for a new term. If the Commission fails to fill the vacancy within ninety (90) days, the Election Commission shall call a special election to fill the vacancy, which election shall be held not sooner than ninety days and not later than one hundred twenty days following the occurrence of the vacancy.