Steven Spence Marshall (born 21 January 1968) is an Australian politician and the current South Australian Leader of the Opposition. He has been a member of the South Australian Division of the Liberal Party of Australia in the South Australian House of Assembly since 2010, representing the electorate of Dunstan (known as Norwood before 2014).He has been Leader of the Opposition and the SA Liberals since February 2013. He had previously been the party's deputy leader from October 2012 to February 2013. Wikipedia