A referendum on joining the Union of South Africa was held in the Colony of Natal on 10 June 1909.Sub-National Referendums in Sub-Saharan Africa African Elections Database It was approved by 75% of voters, and Natal became part of the Union when it was established on 31 May 1910.

Results ChoiceVotes%For11,12175.03Against3,70124.97Invalid/blank votes –Total 100Registered voters/turnout25,463Source: African Elections Database

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