The first Yamamoto Cabinet, established immediately after Katsura's resignation, invited some influential members of the Seiyukai to be the ministers of his administration, such as Takashi HARA (as the minister for home affairs) and Korekiyo TAKAHASHI (as the minister of finance).
桂退陣後に成立した第1次山本内閣は、立憲政友会を与党とし、原敬（内相）や高橋是清（蔵相）ら政友会の有力者を閣僚としてむかえた。