Before the Rikken Kaishinto (Constitutional Reform Party) merged with several smaller nationalist parties to form the Shinpoto (Progressive Party [in the Meiji period]) (on March 1, 1896), the Rikken Kakushinto dissolved and then most of its lawmakers joined the Shimpoto.
立憲改進党を中心とする進歩党_(明治)結成（1896年3月1日）に先立って解党して所属議員の殆どが進歩党に参加した。