 When the military staged a coup in 1964, multi-party system was abolished, being replaced by a two-party system.In 1988, a new Brazilian Constitution was enacted, granting powers to cities but, creating a rigid form of government for cities; in this constitution cities are federative units, unlike former constitutions that granted states full rights to legislate over municipal forms of government.As of October 7, 2006, these are the members of Porto Alegre City Council.