The politics of Japan are conducted in a framework of a dominant-party bicameral parliamentary representative democratic constitutional monarchy. A hereditary monarch, currently Emperor Naruhito, serves as head of state while the Prime Minister of Japan, currently Shigeru Ishiba since 2024, serves as the elected head of government.
Shigeru Yoshida was a Japanese diplomat and politician who served as Prime Minister of Japan from 1946 to 1947 and from 1948 to 1954, serving through most of the American occupation following the Pacific War. He played a significant part in determining the course for post-war Japan by forging a strong relationship with the United States and pursuing economic recovery.
Tetsu Katayama was a Japanese politician who was Prime Minister of Japan from 1947 to 1948. A Christian pacifist, he bears the distinction of having been the first socialist to serve as Prime Minister of Japan. He was a Christian socialist.
Hitoshi Ashida was a Japanese politician who served as Prime Minister of Japan in 1948. He was a prominent figure in the immediate postwar political landscape, but was forced to resign his leadership responsibilities after a corruption scandal targeting two of his cabinet ministers.
Ichirō Hatoyama was a Japanese politician who served as Prime Minister of Japan from 1954 to 1956. During his tenure he oversaw the formation of the Liberal Democratic Party and restored official relations with the Soviet Union.
The House of Representatives is the lower house of the National Diet of Japan. The House of Councillors is the upper house. The composition of the House is established by Article 41 and Article 42 of the Constitution of Japan. The House of Representatives has 465 members, elected for a four-year term. Of these, 176 members are elected from 11 multi-member constituencies by a party-list system of proportional representation, and 289 are elected from single-member constituencies.
The Cabinet of Japan is the chief executive body of the government of Japan. It consists of the prime minister, who is appointed by the Emperor after being nominated by the National Diet, in addition to up to nineteen other members, called ministers of state. The current cabinet is Ishiba Cabinet, which was formed on 1 October 2024, is led by the prime minister Shigeru Ishiba. The country has had a Liberal Democratic–Komeito coalition cabinet since 2012.
The Japan Socialist Party was a major socialist and progressive political party in Japan which existed from 1945 to 1996. The party was the largest representative of the Japanese left for most of its existence and the main opponent of the right-wing Liberal Democratic Party.
Events in the year 1946 in Japan.
Events in the year 1947 in Japan.
Takeru Inukai was a Japanese politician and novelist active in Shōwa period Japan. Also known as "Inukai Ken", he was the third son of Prime Minister of Japan Inukai Tsuyoshi.
The 1955 system (55年体制), also known as the one-and-a-half party system, is a term used by scholars to describe the dominant-party system that has existed in Japan since 1955, in which the Liberal Democratic Party (LDP) has successfully held by itself or in coalition with Komeito a majority government nearly uninterrupted, with opposition parties largely incapable of forming significant or long lasting alternatives, other than for brief stints in 1993–1994 and 2009–2012. The terms 1955 system and the one-and-a-half party system are credited to Junnosuke Masumi, who described the 1955 system as "a grand political dam into which the history of Japanese politics surge".
Factions are an accepted part of the Liberal Democratic Party (LDP), the ruling party of Japan, which began with eight formal factions when it was first formed by merger in 1955. A political faction may be defined as a sub-group within a larger organization. While factions characterize other political parties in Pacific Asia, Japanese factionalism is distinguished by its stability and institutionalization. Although factions reconstitute themselves from time to time, the habatsu active today can be traced back to their 1955 roots, a testament to the stability and institutionalized nature of Liberal Democratic Party factions.
General elections were held in Japan on 23 January 1949. The result was a landslide victory for the Democratic Liberal Party, which won 269 of the 466 seats. Voter turnout was 74.0%. It was the first election held following the enactment of the current Constitution of Japan.
General elections were held in Japan on 10 April 1946, the first after World War II, during the Allied occupation. Voters had one, two or three votes, depending on how many MPs were elected from their constituency. The result was a victory for the Liberal Party, which won 141 of the 468 seats. Voter turnout was 72.1 percent.
Yonezō Maeda was a politician and cabinet minister in the pre-war Empire of Japan.
The Murayama Cabinet governed Japan under the leadership of Prime Minister Tomiichi Murayama from 1994 until a 1995 Cabinet Reshuffle. Murayama was elected prime minister by the National Diet on 29 June 1994 after the threat of a no-confidence vote had brought down the previous minority Hata Cabinet. Murayama's and his cabinet's formal investiture by the Emperor took place one day later.
The Katayama Cabinet governed Japan under the premiership of Tetsu Katayama from 24 May 1947 to 10 March 1948, during the Allied occupation. It was the first cabinet under the postwar constitution.
General elections were held in Japan on 22 October 2017. Voting took place in all Representatives constituencies of Japan – 289 single-member districts and eleven proportional blocks – in order to appoint all 465 members of the House of Representatives, the lower house of the then 707-member bicameral National Diet of Japan. Incumbent Prime Minister Shinzō Abe's governing coalition of the Liberal Democratic Party (LDP) and the Komeito party retained their seats in signs of what was perceived as weak opposition. The PM won his fourth term in office and held on to the two-thirds supermajority in order to implement policies on revising the war-renouncing Article 9 of the Japanese Constitution.
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