This study attempts to analyse the political and economic changes in late industrializing countries of Southeast Asia. They followed the strategy of ‘developmental state’ model for its economic development, but are now facing the force of globalization. Under an assumption that the democratization and liberalization in those Southeast Asian countries are the consequence of globalization, this article explained the patterns of political and economic changes, focusing on the burgeoning electoral democracy. As a consequence of globalization, Southeast Asian countries found it difficult to maintain state-led development and authoritarian control of society. Subsequently, the states allowed electoral democracy in an attempt to sustain its economic development. Today, the emerging electoral democracy in Southeast Asia is a vivid example of political and economic transition from developmental state which was weakened by globalization, as well as is a major element of the dynamics of political change in Southeast Asia. In fact, the widespread impacts of globalization, and the following democratization and liberalization does not mean a disintegration of developmental state. It only induces a reshaping of political structure to a degree that the developmental state would acquire procedural legitimacy and political power. Such changes do not guarantee installment of sound democracy. Still the Southeast Asian states have the possibilities to go back to the old authoritarian developmental states. Therefore, for a stable democracy in Southeast Asia, following the transition from developmental state and the onset of electoral democracy, not only institutional changes and reform, but also incessant effort to deep-root democracy is required.