South Africa has an electoral system based on proportional representation for the National Assembly and provincial legislatures. The interim Constitution (Act 200 of 1993) contained anti-defection provisions requiring members to vacate their seats upon ceasing to be members of their nominating party. The 1996 Constitution contained no such provision in its body, but Schedule 6 (transitional provisions) kept anti-defection provisions alive until the second election under the new Constitution.
On 19 June 2002, the President signed into law four Acts of Parliament that suspended the anti-defection provisions during specified "window periods" for the National Assembly, provincial legislatures, and local government. The United Democratic Movement (UDM), a political party represented in Parliament and some provincial legislatures, challenged the constitutionality of this legislation.
The UDM brought an urgent application to the Cape High Court on 20 June 2002. Nel J granted an interim order suspending commencement of the Acts. On 24 June 2002, the Full Court confirmed this suspension pending a Constitutional Court application. The President and other appellants opposed the relief and sought to appeal against the High Court orders, arguing those courts lacked jurisdiction to suspend Acts of Parliament.