Japanese general election, 1955

General elections were held in Japan on 27 February 1955. The result was a victory for the Japan Democratic Party, which won 185 of the 467 seats. Voter turnout was 75.8%. On 15 November 1955, the Japan Democratic Party and the Liberal Party combined as the modern Liberal Democratic Party, which ruled Japan for more than a half century. The Rightist Socialist Party of Japan and the Leftist Socialist Party of Japan also merged to form the Social Democratic Party of Japan, which was Japan's largest opposition party in the 1955 system.