General elections were held in South Africa on 26 May 1948. They represented a major turning point in the country's history, as despite receiving just under half of the votes cast, the United Party and its leader, incumbent Prime Minister Jan Smuts, were ousted by the Herenigde Nasionale Party (HNP) led by D. F. Malan, a Dutch Reformed cleric.
Due to a racially segregated election system and restrictive franchise requirements, the electorate consisted almost exclusively of white people (who were roughly 20% of the population). Very few Colored people and of Asian descent were allowed to vote in this election.