The party reached a peak of four MPs in the South African House of Assembly, all of them from the "Native" representatives, elected under the Cape Qualified Franchise.[9] In 1960, after the passing of the Promotion of Bantu Self-government Act, the Native representative MPs were abolished, and so the Liberal Party was left without parliamentary representation.The Liberal Party, despite its opposition to the bantustan system of limited black self-government, also supported liberal candidates in the Transkei elections, and helped its rural members and others, especially in Natal, to resist the ethnic cleansing brought about by the forced removal of black South Africans to bantustans and, to a lesser degree, white South Africans from them.Among the black representatives of the Liberal Party Eddie Daniels, a political activist, spent fifteen years on Robben Island concurrent to Nelson Mandela's serving his life sentence there.In 1968, the South African government passed the so-called Prohibition of Improper Interference Act, which banned parties from having a multiracial membership.
Party members put up posters in
Sea Point
during the 1959 provincial election campaign