The Liberal Democratic Party-led ruling triumvirate suffered a major setback but secured a majority in the Lower House in the general election held Sunday.

Still, several leading members of the LDP and its allies indicated that Prime Minister Yoshiro Mori would probably keep his post as long as the tripartite alliance remains a majority force in the lower chamber.

Mori told a TV interview that he plans to hold a special Diet session as early as July 4 to launch his new Cabinet.