現今半總統制國家數目已經正式超越純粹總統制與內閣制，成為當今最多國家採用的政體類型。近來部分研究關注於半總統制國家的演化發展，除探討半總統制國家朝向內閣制傾斜的演化趨勢外，半總統制國家朝向「總統化」(presidentialisation)發展現象也成為學界關心的新研究焦點。本研究嘗試從半總統制國家朝向總統化發展的角度，探討總統化的定義內涵與演化動力、總統化對於政黨體系的影響，特別著重於總統化對於內閣性質以及內閣穩定度(stability of cabine..

The semi-presidential system has become the most popular regime type in the world, indicated by the number of states that adopted the system having surpassed that of purely presidential system and the parliamentary system since 2000. A number of major studies have recently focused on the evolution of semi-presidentialism; some of the researches have sketched the working mode of parlimentalization of semi-presidential system, and considerable studies have been paying attentions to the development of a semi-presidential system ..

法國第五共和體制向為半總統制的主要原型典範，並為穩定半總統制的代表，但法國各界對此一制度設計一直有著許多爭論與修改意見。2007 年法國總統大選前，各主要政黨候選人紛紛提出「第六共和」(la VIe République)的憲政倡議。法國新任總統薩科奇(Nicolas Sarkozy)於 2008 年進行自 1958 年第五共和以來最大規模的一次修憲。修憲主要方向同時強化總統與國會的權力，在總統權力部分修憲後強化總統的國會咨文權，形同間接賦予總統的行政優勢..

The French Fifth Republic (la Ve République) is not only the prototype of semi-presidentialism but also the typical model of “stable semi- presidentialism,” of which the French political circle and academia have never stopped their criticism over the design of the French Fifth Republic and have consistently expressed their opinions of modification. Even before the 2007 French presidential election, most of the major parties simultaneously advocated a new constitutional engineering plans of “la VIe Républiq..