1975 South Australian state election
12 July 1975
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All 47 seats in the South Australian House of Assembly 24 seats were needed for a majority 11 (of the 21) seats of the South Australian Legislative Council | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Registered | 771,414 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Turnout | 721,770 (93.56%) ( 0.64 pp) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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State elections were held in South Australia on 12 July 1975. All 47 seats in the South Australian House of Assembly were up for election. The incumbent Australian Labor Party led by Premier of South Australia Don Dunstan won a third term in government, defeating the Liberal Party of Australia led by Leader of the Opposition Bruce Eastick.
It was the first time that a Labor government in South Australia had been re-elected for a third term, and would be the first seven-year-incumbent Labor government.
The election was also the first in South Australia where both major parties contested all lower house seats.
The election saw a drop in major party primary votes. This was due to the emergence of the socially progressive Liberal Movement (LM) led by Robin Millhouse, which achieved 18.3 percent of the primary vote and 2 seats.
The election of half of the South Australian Legislative Council was conducted using list proportional representation. Labor won 6 seats, the Liberal Party won 3, and the Liberal Movement won 2.