This article provides a new interpretation of the changes that occur in party-civil society relations when progressive parties of mass-based origin gain state power by looking at the experience of the Brazilian Workers’ Party (PT) during the Lula administration. The need to preserve what is defined here as ‘social governability’ changes the nature of party-movement relationships when political parties move from opposition to government. The article shows how the PT in national executive public office, to a large extent, managed to secure social governability through reward-based linkages, such as the distribution of jobs in the state apparatus and the allocation of massive state subsidies.