Numa and his associates joined the League for the Establishment of a National Assembly in 1880, and though they showed willingness of participate in the formation of the Liberal Party, in 1882 they joined the Rikken Kaishintō with Shigenobu Okuma who had been forced to leave public office during the Political Crisis of 1881.
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Kaneko and Suehiro, with others, drew up the Omeisha’s Kenpo Soan, a prominent example of the many popularly written draft constitutions that were circulated prior to the promulgation of the Meiji Constitution in 1890.