There is hereby created a planning commission for the city. The commission shall be composed of five (5) members, nominated by the mayor and confirmed by the city council. The mayor shall be an ex officio member of the commission. Each appointed member shall hold office for a period of three (3) years, or until his successor takes office. The appointed members of the commission shall be nominated and appointed solely with reference to their fitness and without reference to party affiliation. Members may be removed by the city council only for inefficiency, neglect of duty or malfeasance in office. Vacancies occurring otherwise than through the expiration of term shall be filled only for the unexpired terms by the mayor with confirmation by the city council. (1992 Code § 12-101)