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All metropolitan municipalities as well as local municipalities must be delimited to have wards. The number of wards in a metropolitan or in a local municipality must be equal to the number of ward councillors determined for the municipality in terms of section 22 (2) of Act No. 117 of 1998. The number of ward councillors in a metropolitan or local council referred to in subsection (1) (b) must be equal to 50 per cent of the number of councillors determined for the municipality in terms of section 20. If the number of councillors determined in terms of section 20 is an uneven number, the fraction must be rounded off upwards. According to the Demarcation Board, the delimitation criteria are thus prescribed: The Demarcation Board, after consulting the Electoral Commission must delimit a municipality into wards, each having approximately the same number of voters, taking into account the following criteria: (a) The number of registered voters in each ward may not vary by more than fifteen per cent from the norm, where the norm is determined by dividing the total number of registered voters on the municipality's segment of the national common voters roll by the number of wards in the municipality. (b) The need to avoid, as far as possible, the fragmentation of communities. (c) The object of a ward committee as set out in section 72 (3), which is to enhance participatory democracy in local government. (d) The availability and location of a suitable place or places for voting and counting if appropriate, taking into consideration - (i) Communication and accessibility; (ii) Density of population; (iii) Topography and physical characteristics; (iv) The number of voters that are entitled to vote within the required time-frame; (e) The safety and security of voters and election material; and (f) Identifiable ward boundaries. 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The new structure consists of Category A municipalities, which are the metropolitan areas (Cat A or Metros), Category B or local municipalities (Cat B) and Category C municipalities or district councils (Cat C or DCs).Metropolitan areas are described as conurbations featuring high population density; intense movement of people, goods and services; extensive development; and multiple business and industrial districts. Other features include a complex and diverse economy, a single area where integrated development is desirable and strong interdependent social and economic linkages between its constituent units exist. According to the MDB, key considerations in re-determining local municipality boundaries included settlement type, the rationalisation of municipalities, manageable size and functionality. Local municipalities are the next spatial level above the main place. 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