2021-01-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/697240台灣自有民選總統以來，多數選舉其實都有第三組候選人參選，但2020年選舉與前幾次相比，本質並不相同。以往的非國民兩黨候選人，多數都是由這兩個主要政黨脫黨參選，目的在挑戰黨內獲提名者，涉及黨內路線或政策歧見之爭。2020年選舉的第三勢力，則不是來自於舊政黨的分裂，而是來自於新的政治力量，代表台灣的政黨政治版圖可能來到一個關鍵點(critical juncture)；台灣的兩黨制可能因為新勢力的加入朝向多黨制發展，或是因新勢力取代某一舊有政黨，位移原有的社會與意識形態分歧，形成新的兩黨制。無論如何，新勢力與素人政治人物的興起都是值得關注的現象。據此，本研究旨在回答以下問題: 為何台灣會在此時出現不同以往的勢力以及具選舉實力的政治素人挑戰傳統政治人物? 這種現象的形成原因為何? 回答這些問題有助於我們了解素人政治興起的原因，以及對台灣民主政治發展的影響。 Since Taiwan has had a popularly elected president, most elections have more than two candidates vying for the post. However, the 2020 elections are essentially different from the previous ones. In the past, most of the non-KMT and non-DPP candidates were politicians split from the two main parties to challenge those party nominees. The third force in the 2020 election, however, is not from the division of the old parties, but from a new political force. The political landscape of the party representing Taiwan may come to a critical juncture. Taiwan ’s two-party system might be altered by the joining of these new forces and begins to develop a multi-party system, or one of the new forces might replace an old political party, shifting the long-prevailing social and ideological cleavages and forming a new two-party system. In any case, the rise of new forces and political outsiders is a phenomenon worthy of attention. Based on this, this research aims to answer the following questions: Why did Taiwan appear at this time to be different from the past in which new forces become viable challengers to traditional politicians? What are the reasons for this phenomenon? Answering these questions helps us understand the reasons for the rise of political outsiders and its impact on the development of democratic politics in Taiwan.社會分歧政治素人中間選民政治意識形態社群媒體Social CleavagePolitical OutsiderIndependent VotersPolitical IdeologySocial Media