Josef Klaus was an Austrian politician of the conservative People's Party (ÖVP). He served as State Governor (Landeshauptmann) of Salzburg from 1949 to 1961, as Minister of Finance from 1961 to 1963 and as Chancellor of Austria from 1964 to 1970.

Bruno Kreisky was an Austrian social democratic politician who served as Foreign Minister from 1959 to 1966 and as Chancellor from 1970 to 1983. Aged 72 at the end of his chancellorship, he was the oldest Chancellor after World War II. His 13-year tenure was the longest of any Chancellor in republican Austria.