(a) A majority of the membership of the council shall constitute a quorum. The number required for a quorum shall not be affected by vacancies. A member who has withdrawn from a meeting without being excused by a majority vote of the remaining members present shall be counted as present for purposes of determining whether or not a quorum is present.
(b) No member shall be excused from voting except upon matters involving the consideration of his own financial interest or official conduct. In all other cases, a failure to vote by a member who is physically present in the council chamber, or who has withdrawn without being excused by a majority vote of the remaining members present, shall be recorded as an affirmative.
An affirmative vote equal to a majority of all the members of the council not excused from voting on the question in issue (including the mayor’s vote in case of an equal division) shall be required to adopt an ordinance, take any action having the effect of an ordinance, authorize or commit the expenditure of public funds, or make, ratify, or authorize any contract on behalf of the city. In addition, no ordinance nor any action having the effect of any ordinance may be finally adopted on the date on which it is introduced except by an affirmative vote equal to or greater than two-thirds of all the members of the council (not including the mayor unless he has the right to vote on all questions before the council).
(Amended 6-18-73)