The JB Marks Local Municipality council consists of sixty-seven members elected by mixed-member proportional representation. Thirty-four councillors are elected by first-past-the-post voting in thirty-four wards, while the remaining thirty-three are chosen from party lists so that the total number of party representatives is proportional to the number of votes received. In the election of 1 November 2021 the African National Congress (ANC) narrowly lost their majority, winning thirty-three seats.
The following table shows the composition of the council after past elections.
| Event | ANC | DA | EFF | FF+ | Other | Total |
|---|---|---|---|---|---|---|
| 2016 election | 34 | 22 | 5 | 4 | 2 | 67 |
| 2021 election | 33 | 17 | 6 | 9 | 2 | 67 |
See main article: 2016 South African municipal elections.
The following table shows the results of the 2016 election.[1]
See main article: 2021 South African municipal elections.
The following table shows the results of the 2021 election.[2]