本文乃個人從事「德國統一與政黨統合」研究至今之發現與心得。本研究目的在瞭解德國統一過程中東、中德政黨統合之發展，及其對聯邦德國正黨體系結構、與政黨政治運作之影響。雖然，東西德於1990年結束四十年之分裂，復歸統一；在統一的激情下，德東、德西於統一後第一次全德大選中亦呈現一致的政黨社會支持結構。然而，東、西德的統一乃歷史突發事件，面非有計劃的統合政策下之成果，東、西德從領土、形式上的統一到意識形態、價值規範上的實質統一仍需一段時間。統一政策的成果亦將影響政黨認同與政黨體系的結構。

The present article is part of the result of my research project on “German reunification and the integration f political parties”. It is aimed at providing a survey of integration of political parties in East and West Germany in the course of reunification, as well as the effect of reunification upon the structure and function of party politics in Germany. This project is dealing with the following two questions in order to expound the process of party integration in both parts of the Ferderal Republic of Germany (FRG): 1. The party system in east part of FRG has developed from communist one-party dictatorship into free, democratic one. How has it been possible? 2. How did the parties in both parts of FRG carry out their organizational and programmatic integration? In order to explain in impact that German Reunification has exerted on operation of party politics, the discussion will be centered on two points: 1. Two factors, i.e. the voting behavior and political participation, should be analyzed in discussing the social foundation of party system in the united Germany. 2. In discussing the effect of reunification on the structure and function of the German party system, one has to focus on analyzing its social foundation and the power structure of the Federal Parliament after the first election in the united Germany. After forty years of separation, the West and East Germany were reunified in 1990 passionately. In view of the outcome of the first whole German election, one can come to the conclusion that this “reunification-passion” renders a similar structure of social party-supporting in both parts of FRG. However, the German reunification itself is a historical accident, not a triumph of elaborately planned policy of integration. That the once separated Germany, starting with territorial and formal reunification, reaches substantial reunification of ideology and value-orientation will certainly take some time. It is also undeniable that the identification with political parties and the future power structure of political parties count on whether the policy of reunification can be achieved or not.