Among the many consequences of globalisation is the creation of new political spaces. As these emerge, new or redefined power relationships accompany the process. In the course of creating transnational relationships, citizenship, representation and the role of the stakeholders may be redefined. This article focuses on the case of Argentina and on the role of civil society orgnisations (CSOs) in the process of political integration. The relationship between the state and civil society has sparked a debate about the core status of the political system as the third sector assumes roles traditionally belonging exclusively to the state. This raises issues regarding the difference between rights and services, the sources of legitimacy and efforts to enhance accountability, among others. The existing and potential channels of regional cooperation in the context of Mercosur illustrate the interplay between domestic, regional and global norms and institutions. This article emphasises the role of organised civil society in providing sense and meaning in the formation and awareness of supranational concerns, but is sceptical about its possibilities of providing and guaranteeing rights, tasks that still remain in the sphere of the state.