House of Councillors
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The House of Councillors is the upper house of the National Diet of Japan. The House of Representatives is the lower house. The House of Councillors is the successor to the pre-war House of Peers. If
Japanese diet inside
Emperor Akihito and Empress Michiko seated in the Chamber of the House of Councillors, with Prince and Princess Akishino, the cabinet, and Prime Minister Naoto Kan giving the government's speech in front of the assembled members of parliament at a ceremony commemorating the 120th anniversary of the founding of the National Diet. (2010)
The Liberal Democratic Party, also known as Jimintō, is a major conservative and nationalist political party in Japan. Since its foundation in 1955, the LDP has been in power almost continuously—a per
House of Councillors
…majority in the House of Representatives. (For context, no single party achieved a two-thirds majority in the House of Representatives until the Liberal Democratic Party did in the February 2026 election.) Usually, controlling a majority in the House of Councillors and one third of the House of Representatives is enough…
Launching convention, 15 November 1955
Liberal Democratic Hall Bldg., Headquarters of the LDP in Tokyo