At a general level of neoliberal repudiation or expansion of social policies, most post-neoliberal Latin American governments in the 2000s have exhibited similarities. However, coalitions with popular actors have displayed a lot of variation. In order to compare popular-sector coalitions the article constructs a framework with two central dimensions: electoral and organisational/interest; in post-import substitution industrialisation (ISI) Latin America the latter is composed of both unions and territorial social movements (TSMs). It contends that the region witnessed four types of popular coalitions: electoral (Ecuador and Chile), TSM-based (i.e. made up of informal sector-based organisations, Venezuela and Bolivia), dual (i.e. composed of both unions and TSMs, Argentina and Brazil) and union/party-based (Uruguay). The study argues that government–union coalitions are largely accounted for by the relative size of the formal economy, and by the institutional legacies of labour based-parties. Coalitions with informal sector-based organisations are rooted in the political activation of these TSMs during the anti-neoliberal struggles of the 1990s and early 2000s.