The 1958 Northern Territory legislative by-elections were held on 28 June 1958 to elect all six members of the partly elected Northern Territory Legislative Council, the governing body of the Northern Territory of Australia.
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The 1957 election had stressed the need for reform of the council, with virtually unanimous support in the council for elected members to constitute a majority. In 1958, a year after the first meeting of the council, every elected member resigned in frustration with the refusal of the federal government to announce such a reform.
The resignations triggered by-elections on 28 June for all seats — effectively another general election, although not in application of the Northern Territory (Administration) Act 1947.[1]
All previous members were elected unopposed, except for Len Purkiss, who was re-elected with an increased majority in Tennant Creek.[1]