福田赳夫
At the apex of his political life, Ōhira came to represent what were known as the "mainstream factions" within the Liberal Democratic Party (LDP), which put him at odds with Prime Minister Takeo Fukuda, who led what were known as the "anti-mainstream" factions. From 1968 to 1970, Ōhira served as Minister of International Trade and Industry under Ikeda's successor Eisaku Satō. In 1972, Ōhira unsuccessfully competed for the party leadership before throwing his support to ultimate winner Kakuei Tanaka. Ōhira was then rewarded for his support with a post as Tanaka's first Foreign Minister, which he held until mid-July 1974. In a cabinet reshuffle in July 1974, he was replaced by Toshio Kimura as Foreign Minister but then immediately appointed Finance Minister, replacing Takeo Fukuda.