立憲民政党
Founded on September 15, 1900, by Itō Hirobumi, the "Seiyūkai" was a pro-government alliance of bureaucrats and former members of the "Kenseitō." The "Seiyūkai" was the most powerful political party in the Lower House of the Diet of Japan from 1900 to 1921, and it promoted big government and large-scale public spending. Though labeled "liberal" by its own members, it was generally conservative by modern definitions. It often opposed social reforms and it supported bureaucratic control and militarism for the purpose of winning votes. It viewed the "Rikken Minseitō" as its main rival.