議會內閣制國家之選舉制度對政黨體系影響之研究─以日本、英國、德國為主

In 1999, New Clean Government Party (CGP) joined the coalition government with Liberal Democratic Party of Japan (LDP). Then we could see new structure of Japanese political party system that is antagonism between the ruling party and the Democratic Party of Japan (DPJ). In this thesis call that “The 1999 System.” Firstly, Japanese political party system that had formed predominant party system in “The 1955 System,” how would be change? It emerged that the present conditions of Japanese political party system is “shaking” between two-party system and moderate pluralism, after the verification it based on the theory of political party system. In this thesis supposed that it factor is existence of CGP, and emerged CGP is the most influence political party to LDP through analysis of the elections. Then presentations “Estimative Cardinal Number of Proportional-representation Constituency Seat,” emerged that CGP is also the most influence political party to DPJ besides. Secondly, focused on the election systems and the 3rd political parties, and discussed the U. K. and German political party systems, after that demonstrated the issues and the prospects of Japanese political party system. We represented the fact that the feeling of people is distorted cause of the election system, and from the stand-point “respect the feeling of people,” demonstrated significance of the election system reform in Japan as the issues of Japanese political party system. Moreover through analysis of the simulation, emerged the impact on Japanese political party system cause of the election system reform. Then suggested that change-over the small-constituency system to the proportional representation system. We concluded that Japanese political party system would not be change to two-party system as U. K. model, and would be change to moderate pluralism as the prospects of Japanese political party system as German model as far as continue the present election system and the power of CGP. Finally, focused on analysis of the election, and examined for the present conditions of the Taiwanese political party system, after that emerged the factor that Taiwan political party system changed to two-party system.