Imperial Rule Assistance Political Association

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The Imperial Rule Assistance Political Association (翼賛政治会, Yokusan seijikai), abbreviated to Yokuseikai or IRAPA, was the policymaking body set up within the Imperial Rule Assistance Association for the purpose of liaising between the IRAA and the National Diet, and consisted of a joint caucus of members of both the House of Representatives and the House of Peers. The IRAPA existed between 20 May 1942 and 30 March 1945, when the IRAA collapsed amid political infighting that attended the drastically worsening war situation.

In Japanese history, the Imperial Rule Assistance Political Association established the "one country, one party" system.