Ramsay was first contested at the 1985 election. Two of three representatives of the electorate have served as Premier of South Australia. It is a safe Labor seat, with the fifth-largest Labor margin in the state at the 1997 election, second-largest at the 2002 election, and largest at the 2006 election where Labor won 71.5 percent of the first preference vote and 78.5 percent of the two-party vote, and the largest at the 2010 election. A 2012 Ramsay by-election occurred on 11 February as a result of Mike Rann's resignation from parliament, Labor easily retained the seat and maintained the largest Labor seat margin. It had the second largest margin following the 2014 election.