The Constitutional Revision Research Project seeks to follow, analyze, and document constitutional discussion in Japan.
Mainichi ShimbunThe Constitution of Japan (also known as the Postwar Constitution) went into effect in 1947, replacing the Meiji Constitution of 1890. It is recognized as the oldest unamended constitution in the world as of 2022, having never undergone revision in over 70 years since its promulgation. Throughout this time, constitutional revision has become an important subject of vigorous debate and discussion in Japan and around the world.*
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Constitutional Revision a “Vital” Mission: LDP Announces New Vision
April 2026
On the 10th, Japan’s Liberal Democratic Party (LDP) released a new vision titled “The LDP’s History and Its Mission for the Future,” marking the 70th anniversary of its founding last year. In light of changes in the international order, the document states that constitutional revision is “vitally necessary.” It also emphasizes that “we must, together with the people and by our own hands, create the Constitution and present, both domestically and internationally, the form of the nation we aspire to.” [...]
Source: Jiji Press
On the 12th, Prime Minister Takaichi expressed her willingness to initiate constitutional revision at her first party convention since taking office (see related coverage by The Asahi Shimbun). Meanwhile, on the 19th, citizens opposing war and constitutional revision gathered around the National Diet building (36,000 participants according to the organizers; see related reporting by NHK).
Photo: Jiji.com
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