三木武夫
Following LDP losses in the 1974 Japanese House of Councillors election and acrimony between Vice Prime Minister Takeo Miki and Finance Miniter Takeo Fukuda, Tanaka asked that Shiina head a committee to reform the party and also asked Tanaka to determine his successor through discussions without an open election. In December 1974, Shiina issued a ruling to the major factions of the party that Takeo Miki should succeed Tanaka - a decision that was largely welcomed by the public due to Miki's "clean" image. Shiina continued to serve as Vice President of the LDP under Miki, but soon had falling out over differences in policy over political contributions and the idea of a single-member constituency system. In May 1976, Shiina used the Lockheed Scandal as cover to seek the resignations of Tanaka, Fukuda, Ohira and Miki from politics. Miki refused, and failure of his attempted coup drastically reduced Shiina's political influence. With the inauguration of the Fukuda administration, Shiina announced his retirement.