Askin quickly rose through party ranks, eventually becoming Deputy Leader following Walter Howarth's resignation in July 1954. When long-serving party leader Vernon Treatt announced his resignation in August 1954, Askin put his name forward to replace him. At the vote, he became deadlocked against Pat Morton and Askin asked his former commanding officer Murray Robson to take the leadership instead. Robson did not live up to expectations and was deposed in September 1955 by Morton, who then became Leader. Askin remained as Deputy until, after leading the party to a second electoral defeat in 1959, Morton was deposed and Askin was elected to succeed him. At the May 1965 election, Askin presented the Liberal Party as a viable alternative government. He won a narrow victory, ending a 24-year Labor hold on government.