The following by-elections were held to fill vacant ward seats in the period from November 2021. A number of ANC councillors were expelled by the party after working with the Economic Freedom Fighters (EFF) to elect Johan Mkhatshwa, former mayor and the top-ranked ANC candidate on the proportional list, elected as mayor. The ANC candidates won both available seats in the August by-elections, although the party received less than 50% of the votes in ward 10.[5][6] The EFF won the October by-election in ward 11, its first ward win in the province.[7]
Nkomazi municipality is home to giant processors of sugar cane the Selati Company and to various coal mines.The municipality has a gate to the country's biggest National park, The Kruger National Park.
Nkomazi Municipality serve as a link between Mozambique and South Africa at the Lebombo border.There are also multiple border posts between South Africa and Swaziland.