South Australian state election, 1975

← 1973

12 July 1975

1977 →

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

	First party	Second party	Third party

Leader	Don Dunstan	Bruce Eastick	Robin Millhouse
Party	Labor	Liberal	Liberal Movement
Leader since	1 June 1967	1972	1973
Leader's seat	Norwood	Light	Mitcham
Last election	26 seats	20 seats	0 seats
Seats won	23 seats	20 seats	2 seats
Seat change	3	0	2
Percentage	46.32%	31.53%	18.27%
Swing	5.2	8.26	N/A

Premier before election

Don Dunstan
Labor

Resulting Premier

Don Dunstan
Labor

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.

Independent: Ted Connelly

The drop in major party primary votes was due to the socially progressive Liberal Movement (LM) led by Robin Millhouse who achieved 18.3 percent of the primary vote and 2 seats. The party was a breakaway faction of the Liberal and Country League (LCL) which disbanded in 1973, the party which was the predecessor to the South Australian Division of the Liberal Party of Australia. Stemming from discontent within the ranks of the LCL, it was first formed by former Premier Steele Hall as an internal group in 1972 in response to a lack of social and acceptance of electoral reform within the LCL. A year later, when tensions heightened between the LCL's conservative wing and the LM, it was established on its own as a progressive liberal party. When still part of the league, it had eleven representatives; on its own, it initially had three.

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