At that time, the main force of Kenkyukai, count, viscount and baron members were all elected from among themselves and their tenure of office was seven years.(The election law for Count, Viscount and Baron members of the House of Peers (Article 78 in 1889))
当時、研究会の主力であった伯爵議員・子爵議員・男爵議員は、いずれも任期7年の互選による選出が行われていた（貴族院伯子男爵議員選挙規則(明治22年勅令第78号)）。