(a) A vacancy in the office of Councillor occurs upon the Councillor's death, disability, recall, resignation, removal or termination of residency in the district represented.
(b) If a vacancy occurs in the office of Councillor, the Mayor shall appoint a registered qualified elector of the District to fill the vacancy. Anyone appointed to fill a vacancy shall serve until the next regular election, at which time a person shall be elected to fill the remaining unexpired term, if any.