This article seeks to associate the theoretical devices related to the center-periphery theme, multi-level governance, federalism and positive/negative integration to the very reality of subnational unities within Mercosur. Some field inquiries with economical agents and political actors are subsequently considered in order to favor primary sources of information. Finally this text proposes to scrutinize the impact of the Southern Common Market on the political economy of Pernambuco, Bahia, São Paulo, Rio Grande do Sul and their respective capitals.
Mercosur; Subnational Unities; Center-Periphery; Federalism; Multi-Level Governance; Constituent Diplomacy
