The city of Dar es Salaam is unique because it has a city council whose area of jurisdiction overlaps three municipal councils. The mayor of the city council is elected by that council. The twenty-member city council is composed of eleven persons elected by the municipal councils, seven members of the National Assembly, and "Nominated members of parliament under 'Special Seats' for women". Each municipal council also has a mayor. "The City Council performs a coordinating role and attends to issues cutting across the three municipalities", including security and emergency services. The city of Mwanza has a city council whose areal jurisdiction overlaps two municipal councils.