Grassby won the rural electorate of Riverina for the Labor Party at the 1969 federal election and following Gough Whitlam's victory at the 1972 election, he was appointed Minister for Immigration.
Grassby won the rural electorate of Riverina for the Labor Party at the 1969 federal election. He was appointed Minister for Immigration. This was following Gough Whitlam's victory at the 1972 election.