The City of Johannesburg Metropolitan Municipality council consists of 270 city councilors elected by mixed-member proportional representation. The councillors are divided into two kinds: (a) 135 Ward councillors who have been elected by first-past-the-post voting in 135 wards; and (b) 135 councillors elected from party lists (so that the total number of party representatives is proportional to the number of votes received).
Ward Councillors have more local responsibilities, including setting up Ward Committees in their wards to raise local issues, commenting on town planning and other local matters in their ward, and liaising with local ratepayers' and residents' associations. PR Councillors are usually allocated to more political tasks within their party structures and within the City.