Ramsay state by-election, 2012

A by-election occurred in the South Australian House of Assembly seat of Ramsay on 11 February 2012. The seat was won by Labor candidate Zoe Bettison. The by-election was triggered by the resignation of former Premier and state Labor MHA Mike Rann.

Rann and Kevin Foley resigned from their parliamentary seats, which created twin by-elections for 11 February, the other being the 2012 Port Adelaide by-election. On two-party preferred margins of 18.0 percent and 12.8 percent from the 2010 election, considered safe margins on the previous pendulum, Labor would have likely retained both seats on the two-party preferred vote based on unchanged statewide Newspoll since the previous election. Ramsay was the safest of Labor's seats based on the previous election. In the lower house, 24 seats form a majority, the Labor government held 26 of 47 seats. If one or both seats were lost, Labor would still have retained majority government.

Rann was first elected as the member for the new northern metropolitan seat of Briggs at the 1985 election. From 1989 he held various ministries in the Bannon Labor government. Briggs was abolished in an electoral redistribution, with Rann moving to Ramsay in 1993. Rann was state Labor leader and leader of the opposition from 1994 after the Labor government was defeated a year earlier. Rann led Labor to minority government at the 2002 election, a landslide majority government at the 2006 election, and retained majority government at the 2010 election despite a swing. Rann stepped down in favour of Jay Weatherill as party leader and Premier in 2011. Rann is the third-longest-serving Premier of South Australia and longest-serving South Australian Labor leader, and afterward became the longest-serving period of South Australian Labor government in history.

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