What election did he win before defeating Bob Hawke in 1990?
Australian federal election, 1990:  The incumbent Australian Labor Party led by Bob Hawke defeated the opposition Liberal Party of Australia led by Andrew Peacock with coalition partner the National Party of Australia led by Charles Blunt. Andrew Peacock: Andrew Sharp Peacock AC GCL (born 13 February 1939) is a former Australian Liberal politician. Andrew Peacock:  He was a minister in the Gorton, McMahon and Fraser governments and federal leader of the Liberal Party of Australia and Leader of the Opposition (1983–1985 and 1989–1990), leading the Coalition opposition to defeat at the 1984 election and the 1990 election.
1984