Why Bolivia’s MAS Collapsed

Issue Date October 2025
Volume 36
Issue 4
Page Numbers 92–103
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This essay examines the rise and fall of the Movement Toward Socialism (MAS), once a transformative force in Bolivian politics. Rooted in indigenous mobilization, the MAS created unprecedented inclusion and a decade of dominance but succumbed to centralization of power, weakened pluralism, and leadership succession failures. Internal rivalries between Evo Morales and President Luis Arce fragmented the party, undermined governance, and eroded ties with social movements. By 2025, electoral losses and judicial intervention deepened the crisis, leaving the MAS fractured and marginalized. The essay concludes that while the MAS’s collapse signals democratic alternation, the party’s enduring social base may enable its future resurgence.

About the Author

Santiago Anria is associate professor in the department of Global Labor and Work at Cornell University’s School of Industrial and Labor Relations. He is the author of When Movements Become Parties: The Bolivian MAS in Comparative Perspective (2018) and coauthor (with Kenneth M. Roberts) of Polarization and Democracy in Latin America: Legacies of the Left Turn (2026).

View all work by Santiago Anria

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