在美国两党制发展史上,除了共和党和民主党两大资产阶级政党争夺国家政权、轮流执政之外,还经常出现第三党运动。在两大政党之外,一些小党和第三党不断地出现,不断地消失,在美国历史上屡见不鲜。因此,这种第三党运动便成为美国政党史上的一个重要现象和重要内容。本文综合国内外学者的研究成果和笔者个人研究所得,就美国第三党运动有关问题作一概述。一、第三党的产生和类型 In the history of the development of the bipartisan system in the United States, apart from the two bourgeois parties, Republicans and Democrats, vying for state power and taking turns in power, the third party movement often appears. Beyond the two major political parties, some small parties and third parties have constantly emerged and disappeared constantly, which is not uncommon in the history of the United States. Therefore, this third-party movement has become an important phenomenon and an important part in the history of the U.S. political parties. Based on the research achievements of scholars both at home and abroad and the personal research results obtained by the author, this article gives an overview of the related issues of the Third United Front Movement in the United States. First, the emergence of third parties and types