STATISTICAL DATA ANALYSES OF RECENT NATIONAL ELECTIONS IN JAPAN A.K.M Abul Kalam Azad1, Md. Arifur Rahman,1 Tatsuo Oyama1 1 National Graduate Institute for Policy Studies, Roppongi, Tokyo 106-8677, Japan.
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[email protected] Keywords: Japanese national election, seat share and vote contradiction evolved many votes-to-seats conversion rules share, predictive equations, voting efficiency. for the plurality systems of election. The so-called cubic law in election results is the most famous one among these Abstract conversion rules. Subsequently many other researchers either reformulated and renovated the cubic law or devised This paper investigates the recent national elections in other predictive equations. Japan quantitatively by applying various statistical methods In the wake of recent changes in Japanese election and mathematical models. Firstly, we examine the regional system, where both proportional representation and characteristics that affect voter turnouts and the efficiency plurality voting co-exist, one can raise a question that of the political parties in Japan. We find that the high whether the proportional representation is more suitable income and most urbanized prefectures are categorized in than the newly developed mixed election procedure. To the same cluster regarding voter turnouts. The voting answer this question, like many other researchers found, it efficiency according to prefectures and different parties also is imperative to come up with a predictive equation for the shows certain patterns. In addition, the relationship between plurality system of voting in Japan which is compatible with the vote share and the seat share for all political parties was the proportional representation system.