If it then passes with a two - thirds majority , it becomes effective without the Mayor 's approval .
If after five days the Mayor does not approve the ordinance ( similar to a veto ) , the City Council may re-vote on it .
If City Council then passes with a two - thirds majority , City Council becomes effective without the Mayor 's approval .
If after five days the Mayor does not approve the ordinance ( similar to a veto ) , the City Council may re-vote on it .