板垣退助
In 1887, Gotō Shojirō regrouped some members of the former "Jiyūtō" into a proto-party called the "Daidō Danketsu" Movement. This group split into two groups (Daidō Club led by Kōno Hironaka and Daidō Kyōwakai led by Ōi Kentarō and Nakae Chōmin ) in March 1889. In 1890, they were merged by Itagaki Taisuke to form the Constitutional Liberal Party, which was later renamed the Liberal Party. Some politicians who supported Gotō didn't join this party and formed National Liberal Party.