1959 South Australian state election
State elections were held in South Australia on 7 March 1959. All 39 seats in the South Australian House of Assembly were up for election. The incumbent Liberal and Country League led by Premier of South Australia Thomas Playford IV defeated the Australian Labor Party led by Leader of the Opposition Mick O'Halloran.
Background
Labor won two seats at this election, rural Mount Gambier from an Independent and rural Wallaroo from the LCL. Both of these seats had been previously won in by-elections in 1957 and 1958, and Labor retained them.Post-election pendulum
| Labor seats | - | - | - |
| Marginal | - | - | - |
| West Torrens | Fred Walsh | ALP | 1.4% |
| Frome | Mick O'Halloran | ALP | 2.5% |
| Millicent | Jim Corcoran | ALP | 4.5% |
| Norwood | Don Dunstan | ALP | 5.0% |
| Fairly safe | - | - | - |
| Edwardstown | Frank Walsh | ALP | 7.8% |
| Mount Gambier | Ron Ralston | ALP | 8.3% |
| Wallaroo | Lloyd Hughes | ALP | 8.9% |
| Safe | - | - | - |
| Murray | Gabe Bywaters | ALP | 15.1% |
| Gawler | John Clark | ALP | 17.7% |
| Adelaide | Sam Lawn | ALP | 30.1% v DLP |
| Port Adelaide | John Ryan | ALP | 34.9% v DLP |
| Whyalla | Ron Loveday | ALP | 34.9% v IND |
| Stuart | Lindsay Riches | ALP | 38.4% v IND |
| Semaphore | Harold Tapping | ALP | 42.2% v COM |
| Enfield | Joe Jennings | ALP | undistributed |
| Port Pirie | Dave McKee | ALP | undistributed |
| Hindmarsh | Cyril Hutchens | ALP | unopposed |
| Crossbench seats | - | - | - |
| Burra | Percy Quirke | IND | 2.1% v LCL |
| Ridley | Tom Stott | IND | 6.7% v LCL |