The Executive Councils of the Western Cape and KwaZulu-Natal provinces brought direct applications to the Constitutional Court challenging the constitutionality of numerous provisions of the Local Government: Municipal Structures Act 117 of 1998. The disputes arose during the final phase of South Africa’s transition to democratic local government and concerned who has constitutional authority to establish municipalities, determine their categories and types, and regulate their internal governance structures. The provinces contended that several provisions of the Structures Act unlawfully intruded on provincial powers to establish municipalities under section 155(6) of the Constitution and on municipal powers to regulate their internal affairs under section 160. The national government defended the Act, arguing that Parliament enjoyed broad concurrent legislative authority under section 44 of the Constitution. Because of the impending local government elections scheduled for no later than 1 November 2000, the matter was treated as urgent and of national importance.