 Ex-Prime Ministers Junichiro Koizumi and Yoshirō Mori also formerly led the faction.As of 2004 it has overtaken the Hashimoto faction in the more powerful Lower House, and after the 2007 Councilor's election, the Seiwa Political-analysis Council has become the largest political faction in the party.The current chairman is Fukushiro Nukaga since September 2009.