Kenkyukai played an important role in the formation of Yokusanseijikai in 1942 (unlike political parties in the House of Representative, factions in the House of Peers were not asked to dissolve), and due to the contribution, Kenkyukai sent its members into all the cabinets after TOJO Cabinet till the abolition of the House of Peers.
特に1942年の翼賛政治会結成には重要な役割を果たし（衆議院の政党とは違い、貴族院の会派は解散を求められなかった）、この功績で東條内閣以後貴族院廃止までの全ての内閣に研究会からの入閣者を出すことになった。