Title: Nidai seitōsei no hōkai to seiken tantō nōryoku hyōka
Subjects: Two-party systems, History, Elections, 2009, Elections, 2010, Elections, 2014, Politics and government, Japan. Kokkai. Shūgiin, Japan, Japan. Kokkai. Sangiin, Nihon-Seiji gyōsei, Senkyo-Nihon
Places: Japan
Time periods: 21st century