What drove the East Asian tide of democratization during the "Third Wave?" Instead of focusing on a single-factor explanation, we perform qualitative comparative analysis (QCA) on fourteen cases in the region of East Asia from 1980 to 2000 and find three parallel pathways: (1) overthrow model, which features the positive effects of mass mobilization against authoritarianism under a deinstitutionalized authoritarian regime; (2) urban pressure model that works under an institutionalized authoritarian regime; and (3) inside-out model, in which democratization is triggered by the joint forces of domestic and international conditions under both types of regimes. These results demonstrate that the authoritarian status quo ante is an important determinant of democratic transitions.Keywords democratization, East Asia, qualitative comparative analysis (QCA), the Third WaveEast Asia was also affected by the tide of democratization during the so-called "Third Wave" that began in Portugal and Spain in 1973-1974. At the end of the 1970s, Japan was the only country in the region that could be categorized as democratic. During the 1980s and 1990s, however, six former authoritarian regimes-South Korea, Mongolia, the Philippines, Taiwan, Indonesia, and Thailand-became democracies. 1 Why did this "great transformation" occur? What accounts for democratization in these East Asian states? In previous studies on the history of democracy (Dunn 1992;Tilly 2007) and the comparative politics of democratization (O'Donnell, Schmitter, and Whitehead 1986b;Shain and Linz 1995;Linz and Stepan 1996;Lijphart 1999; Coleman and Lawson-Remer 2013), the East Asian experiences are generally understudied. Instead, Latin American and post-communist Eastern European countries have received more sustained attention (O'Donnell, Schmitter, and Whitehead 1986a;Przeworski 1991; Walker and Armony 2000;Calhoun 2004;Rizman 2006; Ramet and Matic 2007;Petrovic 2013).Moreover, the existing but limited research on the democratization of East Asian states has not clarified the distinct models of democratic transition visible in the region. Most of these studies treat the region as a whole and then try to explore a single "East Asian