Led bySir Robert Menziesfor 16 years (1949-66), then by Harold Holt (1966-67), John McEwen (1967-68), John Gorton (1969-71) and William McMahon (1971-72), the Liberal and Country parties won 9 elections in a row (1949, 1951, 1954, 1955, 1958, 1961, 1963, 1966 and 1969). Bu...