<Tr> <Th> Results by province </Th> </Tr> <Tr> <Td> Yes No </Td> </Tr> <P> A referendum on becoming a republic was held in South Africa on 5 October 1960 . The Afrikaner - dominated right - wing National Party, which had come to power in 1948, was avowedly republican, and regarded the position of Queen Elizabeth II as head of state as a relic of British imperialism . The National Party government subsequently organised the referendum on whether the then Union of South Africa should become a republic . The vote, which was restricted to whites, was narrowly approved by 52.29% of the voters . The Republic of South Africa was constituted on 31 May 1961 . </P> <P> Despite the defeat of the two Boer Republics, the South African Republic (also known as the Transvaal) and the Orange Free State, republican sentiment remained strong in the Union of South Africa among Afrikaners . DF Malan broke with the National Party of Prime Minister J.B.M. Hertzog when it merged with the South African Party of Jan Smuts to form a Gesuiwerde Nasionale Party (or "Purified National Party") which advocated a South African republic under Afrikaner control . This had the support of the secretive Afrikaner Broederbond organisation, whose chairman, LJ du Plessis declared: </P>

On which date south africa become a democratic republic