Explains why some contemporary Latin American labor-based parties adapted successfully to the challenges of neoliberalism.

1. Labor-based party adaptation in the neo-liberal era: rethinking the role of party organization; 2. Origins and evolution of a mass populist party; 3. An 'organized disorganization': the Peronist party organization in the 1990s; 4. Populism in crisis: environmental change and party failure, 1983¿5; 5. From labor politics to machine politics: the transformation of the party-union linkage; 6. Menemism and neoliberalism: programmatic adaptation in the 1990s; 7. A view from below: party activists and the transformation of base-level Peronism; 8. The paradox of menemism: party adaptation and regime stability in the 1990s; 9. Crisis, party adaptation and democracy: Argentina in comparative perspective.