The Rise of Populism: Summary & Key Insights

To understand today's populism, one must begin in the dust of the late nineteenth century. The American People’s Party, born from rural frustration and agrarian inequality, introduced the idea of speaking for 'the people' against 'the elites.' Similar currents appeared in Russia’s Narodnik movement, in Latin America’s early caudillo regimes, and in Europe’s interwar charismatic leaders. Yet each of these historical forms carried a local accent—a regional way of defining who counted as 'the people.' The twentieth century reshaped populism through the force of mass communication and the trauma of global war. Postwar populists—whether embodied by Juan Perón in Argentina, Getúlio Vargas in Brazil, or later by European anti-system movements—channeled millions of marginalized voices into national projects. By the twenty-first century, the conditions had changed again: globalization, digital media, and disillusionment with technocratic governance laid the groundwork for a second populist wave, transnational in reach and emotional in tone. What remains constant across all eras is populism’s dual promise—to restore dignity to those who feel unseen, and to punish those believed to have betrayed the nation’s moral core. It is this tension that propels populism’s endurance: it feeds on democratic energy even as it threatens democratic norms.

Populism has no single ideology; it is less a doctrine than a language of mobilization. In our comparative chapters, we describe this as 'ideological thinness'—the ability of populism to attach itself to left-wing, right-wing, or even centrist programs. On the left, it may call for social equality and anti-corporate resistance; on the right, it speaks of sovereignty, tradition, and borders. This adaptability explains why similar populist logics can underpin figures as different as Hugo Chávez and Donald Trump. But adaptability comes with danger: when the populist narrative divides society into pure 'people' and corrupt 'elite,' it often rejects complexity, compromise, and pluralism—the very lifeblood of democracy. Still, to call populism purely anti-democratic would be misleading. Many populists arise from genuine democratic frustration—a cry for accountability, representation, and fairness. Here lies the paradox we explore: populism is both a product of democracy’s vitality and a potential source of its decay. It reinvigorates political passion even as it narrows political tolerance.