How Democracies Die

In 2018, two Harvard political scientists published a short book arguing that the greater danger to American democracy was not a military coup but a slow institutional suffocation — the erosion of unwritten norms by elected leaders who had learned to turn democratic procedures against democratic outcomes. The book became a bestseller and a handbook for a certain kind of liberal alarm. Both the bestseller status and the alarm were justified, though not always for the reasons the book’s admirers cited. How Democracies Die is most valuable as a work of comparative politics and least valuable as a work of political prescription, and the gap between the two is where its real limitations live.

The Core Claim

Levitsky and Ziblatt’s central argument is that contemporary democracies rarely end through dramatic rupture — the tank in the street, the emergency decree, the explicit suspension of the constitution. They end through gradual subversion by elected leaders who dismantle the institutional constraints on executive power from the inside. The mechanism is identifiable and has a comparative record: it played out in Weimar Germany, in Fujimori’s Peru, in Chávez’s Venezuela, in Orbán’s Hungary.

The analytical framework rests on two key democratic norms: mutual toleration, the acceptance of political opponents as legitimate competitors rather than existential enemies; and institutional forbearance, the restraint of elected officials who choose not to exploit every legal power available to them even when doing so would be advantageous. Constitutional rules define what is permissible; norms define what is done. When leaders begin treating the opposing party as illegitimate and wielding every legal instrument available regardless of democratic convention, the guardrails of democratic governance are already failing — regardless of whether any law has been broken.

The book adds a historical argument about the gatekeeper function of political parties. Historically, Levitsky and Ziblatt argue, mainstream parties have served as filters preventing demagogic outsiders from capturing nominations — Republican and Democratic establishments alike closed ranks against candidates they judged unfit for democratic governance. The breakdown of this function, visible in the primary reforms of the 1970s and the collapse of party establishments thereafter, left the gatekeeper role vacant.

Where the Argument Is Strongest

The comparative politics sections are the book’s most durable contribution. Both authors are specialists in exactly the regions whose historical experience illuminates the American case — Levitsky in Latin America, Ziblatt in Europe — and the facility with which they move between Fujimori and Mussolini, between Hungary and interwar Germany, reflects genuine expertise rather than casual analogy. The Latin American cases in particular are under-used in American democratic theory: what happened to Peruvian democracy in the early 1990s and Venezuelan democracy in the early 2000s is more structurally relevant to contemporary American conditions than the European fascism more commonly invoked, and the book makes that case effectively.

The four-item checklist for identifying authoritarian behavior — rejection of democratic rules of the game, denial of opponents’ legitimacy, tolerance or encouragement of political violence, readiness to curtail civil liberties of opponents — is analytically useful precisely because it is specific and observable. It converts a diffuse anxiety into a set of concrete indicators, which is what political science at its best does.

The gatekeeper argument is historically well-grounded and underappreciated. The role of mainstream party elites in excluding extremists from nomination is documented for multiple cases, and the mechanism by which those elites failed — the Hindenburg problem, as the authors call it, of establishment figures who believed they could manage and contain a demagogue they had admitted to power — is one of the book’s most instructive historical contributions.

Where It Strains

The norms framework, for all its analytical precision, is socially thin. Levitsky and Ziblatt treat mutual toleration and institutional forbearance as norms that elites choose to observe or violate, but say relatively little about the material conditions that make norm-maintenance possible or norm-erosion likely. The relationship between economic dislocation, political grievance, and the delegitimation of opponents is gestured at but not integrated into the framework. The comparison with Rorty is instructive: where Rorty asked what political economy had done to produce the constituency for strongman politics, How Democracies Die focuses on what political elites did when that constituency arrived.

The American historical narrative is notably selective. The book describes the long post-war period as one in which American democratic norms functioned — cautiously crediting the stability of the two-party system and the restraint of postwar elites. But the stability of that period rested partly on a racialized political compact: the exclusion of Black southerners from effective political participation, enforced through violence and law, was one of the conditions under which white political elites maintained mutual toleration. The guardrails the book celebrates were, for a significant portion of the population, guardrails against inclusion. This history is not ignored entirely, but it is insufficiently integrated into the theoretical account of what norms actually protected and for whom.

The prescriptive sections are the weakest. Having diagnosed the problem with comparative precision, Levitsky and Ziblatt offer conclusions that amount to: parties should restore their gatekeeping function, elites should rebuild norms of mutual toleration, and democratic coalitions should be broad. These are not wrong, but they are underspecified to the point of being unhelpful — the book does not account for why the conditions that produced norm erosion would be responsive to elite decisions to rebuild norms, or what leverage democratic actors actually have over the structural forces driving polarisation.

Verdict

How Democracies Die is a genuinely useful work of comparative politics that is somewhat oversold as a guide to democratic restoration. Its framework for identifying authoritarian behavior is precise and has proved descriptively accurate; its comparative history is the most instructive available for anglophone readers trying to understand the current American moment; its account of the gatekeeper function is historically serious. What it cannot do is explain, at sufficient depth, why democratic norms eroded when they did, what material and structural conditions produced the political forces that overwhelmed institutional gatekeepers, or what a viable programme of democratic renewal would actually require. For that, Rorty’s diagnosis of the left’s abdication and Honneth’s account of labour’s relationship to democratic formation are more illuminating — not because they are more rigorous political scientists, but because they are asking different and necessary questions that this book, by design, does not.