Given the fact that a single-member constituency system was likely to result in the formation of a large-and-powerful political party, Yamagata figured that he could conciliate the national diet if the constituency system were changed from a single-member to a large constituency system and small factions were fragmented.
小選挙区制は強大な政党が生まれやすいことから、大選挙区制に改め、小党を分立させれば議会の懐柔がしやすくなるという計算があった。