法國與臺灣的政府體制都屬於半總統制，法國的憲政經驗中曾出現過三次的「左右共治」，臺灣的憲政經驗中卻從未出現過「藍綠共治」，何以如此?這是本文欲探討的課題。本文藉助賽局理論作為分析工具，探討制度安排如何影響行動者間的策略互動，以致最後產生了共治與否的差異。法國與臺灣擁有不同的選舉制度和不同的國會保障機制，在兩種制度因素的交互作用下，會引導分屬不同政黨陣營的總統和國會多數產生不同的政治計算與策略互動，最終導致法國出現「左右共治」，臺灣卻沒有出現「藍綠共治」。 ..

Both France and Taiwan’s political systems are semi-presidential. However, “cohabitation” in French constitutional experience has occurred three times while Taiwan has never seen “cohabitation” until now. Finding the reason for this difference is the central question of this paper. By using the game theory as an analysis tool, the paper explores how the institutional design influences the actors’ strategic interactions, which underlies the discrepancy between France and Taiwan in “coh..

半總統制是新興民主國家廣為採用的政府制度類型，而現有關於半總統制的研究不論是著重憲法規範或實證行為面向，對於總統常態性的政策權限設計和相關的決策機關配置的系統性探討較為欠缺。本文試圖藉由包括臺灣在內共 21 個半總統制民主國家憲法設計的探索，讓半總統制的研究和理論能觸及總統常態性的治理課題，是半總統制研究中的新嘗試。本文焦點在於系統性解析多個國家憲法中總統的政策權與決策機關之設計模式，並進一步探討其與半總統制憲法上的次類型和實際的運作類型之關係。藉由多國案例..

Semi-presidentialism has been a popular form of government in emerging democracies. However, systematic analyses on the presidents’ powers in policy-making or on the related mechanisms of their decision- making process have been scarce. To fill in the gap in the field, this article surveys the experiences of 21 democratic countries. With a focus on constitutional design of president’s powers in policy and decision-making mechanisms, this article also tries to discover their relationship with sub- types of semi-pre..