民主黨於 2009 年的眾議院選舉中大勝，取代自民黨執政，然而也在 3 年後的選舉中大敗而結束政權。「民主黨政權為何失敗?」成為研究現代日本政治變動的新題材。既有的研究主要從政治主導的失敗、首相領導權的不足，以及政權公約的挫折來分析，本文則從「分立國會」的新觀點來分析，論述在「分立國會」架構下，參議院如何透過「特例公債法案」的審查，來影響民主黨政權的重要政策與政權運作。 本文研究結果發現，以往被視為眾議院輔助角色的參議院，其影響力已經不..

The Democratic Party of Japan(DPJ)won a landslide victory in the election of House of Representatives in 2009, replacing the Liberal Democratic Party(LDP)as the ruling party, but abruptly terminated due to an overwhelming defeat in another election three years later. Why did the DPJ fail? This question has become a striking issue of modern political science in Japan. Existing studies mainly focus on perspectives such as defeat of political dominance, inadequacy of prime minister’s leadership, or failure of Manifesto. Th..