In June, 1898, he exerted himself to the formation of Shinpo-to Party (Progressive Party) which used to be Liberal Party and Constitutional Progressive Party, and saw the establishment of Kensei-to Party (Constitutional Party).
明治31年（1898年）6月自由党と立憲改進党の後身である進歩党(日本)の合同に尽力、憲政党の結成を見た。