During the 1960s, he was a member of the group, known as The Participants, which also included John Button, Richard McGarvie, Frank Costigan and Barry Jones, who opposed the left-wing group which controlled the Victorian Labor Party from 1955 onwards. In 1971 he supported the moves by supporters of Gough Whitlam, led by Bob Hawke and others, that in 1971 brought about federal intervention in the Victorian branch and ended left-wing control. He became Vice-Chairman of the Victorian Labor Party in 1973. That group of Participants later became known as the Independents faction which predominantly voted with the Socialist Left.