Volpe increased his profile in the mid-1980s by recruiting many new Liberal Party members from Toronto's Italian community. He helped influence several party nomination contests, including John Nunziata's 1984 victory over Paul Hellyer in York South—Weston. Some questioned Volpe's methods and suggested that he was manipulating the system by signing up "instant party members", a charge that he denied. He endorsed John Roberts in the 1984 federal Liberal leadership convention, and threw his support to Jean Chrétien on the second ballot after Roberts withdrew from the contest. The winning candidate was John Turner, who led the Liberal Party to defeat in the 1984 federal election.