alderman bicameralism california chairman chambers of parliament city city of london corporation city of westminster city status in the united kingdom community council congress consolidated city-county council-manager government councillor districts of england england junior city council legislation legislature list of legislatures by country local government areas of australia local government local government in the united kingdom local government in the united states london borough lower house mayor mayor-council government member of congress member of parliament metropolitan borough multicameralism municipal council non-metropolitan district northern ireland parish council parliament parliamentary group parliamentary group leader parliamentary system politics president roman empire scotland town town council tricameralism unicameralism upper house urban area veto wales