Under the 1889 constitution this body was divided into the House of Peers, modeled after the Prussian Herrenhaus, and the House of Representatives, but the former has been replaced by the House of Councilors. The earlier incarnation of this was dominated by parties like the Association of Friends of Constitutional Government and the Constitutional 
Under the 1889 constitution this body was divided into the House of Peers, modeled after the Prussian Herrenhaus, and the House of Representatives, but the former has been replaced by the House of Councilors. The earlier incarnation of this was dominated by parties like the Association of Friends of Constitutional Government and the Constitutional Association of Friends. Laws passed by this body must be promulgated by the sovereign, who is obligated to do so by article 7 of the Peace Constitution. The Social Democratic Party and People's New Party have only ten seats total in the upper house, but have been quite outspoken in the current coalition, and the New Komeito Party lost all its local seats in the election of August 2009. For 10 points, name this legislative body which recently saw the Liberal Democratic Party lose to the DJP, led by Yukio Hatoyama.
Under the 1889 constitution this body was divided into the House of Peers, modeled after the Prussian Herrenhaus, and the House of Representatives, but the former has been replaced by the House of Councilors.
Diet of Japan [or Kokkai]