What Is Democratic Socialism?

Zohran Mamdani, the current mayor of New York City, describes himself as a democratic socialist. So did Michael Harrington, an American writer and activist working in the 1960s who never held elected office. Both used the same label across a sixty-year span, and the gap between what each of them meant by it is a useful way into a term that causes more confusion in American political discourse than almost any other.

Three Terms, Frequently Conflated

Democratic socialism is routinely confused with two adjacent terms — socialism and social democracy — and the confusion has real substance behind it, since all three overlap on the surface even as they diverge underneath.

Socialism, in its classical sense, holds that the working class or the state should own and control the means of production — factories, land, major industry — outright. Social democracy takes a different approach: it does not reject capitalism but manages it aggressively, combining high taxation, strong labor unions, and an extensive welfare state layered on top of a private market economy. This is closer to what the Nordic countries actually practice, despite frequently being described as "socialist" in American political debate; private companies remain privately owned throughout Scandinavia, and what distinguishes the Nordic model is the scale of taxation and redistribution, not state ownership of industry.

Democratic socialism sits nearer the first camp than the second. Most self-described democratic socialists, particularly within the American tradition associated with the Democratic Socialists of America (DSA), regard capitalism itself as the underlying problem rather than something to be managed — while explicitly rejecting the one-party, revolutionary route that socialist movements took through much of the twentieth century. The goal is a different economic system, reached through elections rather than imposed by a vanguard party.

Defining the Term

The clearest working definition: democratic socialism supports a socialist economy — one organized more around collective and worker ownership than private capital — but insists that economy must be built and sustained through democratic institutions rather than one-party control. That is the core distinction from twentieth-century communism, which promised a similarly classless economic outcome but delivered it through single-party rule and, in practice, suppressed the democratic institutions democratic socialists treat as essential.

In current practice, most American democratic socialists do not campaign on abolishing private property broadly. Their platforms center on public options and expanded regulation — universal healthcare, public housing, higher taxes on capital, stronger labor rights — proposals that closely resemble the social democratic model described above. The meaningful difference lies less in the current platform than in the stated destination: social democrats generally treat a well-regulated capitalism as the end point, while democratic socialists treat it as a step toward something beyond capitalism altogether.

From the Margins to the Mainstream

The American democratic socialist tradition traces largely to Michael Harrington and the 1982 merger of two small socialist organizations into the Democratic Socialists of America, which remained a marginal political force for most of the following three decades. Interest declined further through the 1980s and 1990s as market-oriented politics dominated both major parties. The 2007–2009 financial crisis reversed that trajectory. Bernie Sanders' 2016 and 2020 presidential campaigns brought the label into mainstream political conversation for the first time in decades, and DSA-endorsed candidates began winning competitive elections — Alexandria Ocasio-Cortez and Rashida Tlaib to Congress in 2018, and, most recently, Zohran Mamdani's election as mayor of New York City in November 2025. DSA's membership has grown from a few thousand to more than 100,000 over that same period.

Where It Actually Governs

Democratic socialism as a governing platform, rather than a protest or advocacy movement, remains largely untested at national scale. No national government currently governs on an explicitly democratic-socialist program in the classical sense. Its clearest governing footprint today is local: New York City's mayoralty under Mamdani, alongside a small but expanding number of DSA-endorsed state legislators and city council members across the country.

This distinction matters for evaluating the ideology on its own terms. Much of what is currently being debated as "democratic socialism in practice" is, more precisely, democratic socialists governing within existing capitalist economies at the municipal level — an approach considerably closer, in its current form, to an ambitious social democratic policy agenda than to the full economic transformation the ideology's theorists describe as its ultimate goal.

A Generational Divide

The word "socialist" itself carries a distinct political history in the United States. For most of the twentieth century, Cold War associations with the Soviet Union made the term politically radioactive, functioning closer to an epithet than a self-description across most of the electorate. That has shifted generationally: polling consistently shows younger American voters regard the term far more neutrally, and often favorably, compared with older generations — a gap wide enough that the same label can function as a political asset in one district and a liability in the next.

That generational split may be the single most consequential fact about the term's current political standing — not simply a description of an economic position, but a marker of a broader generational divide in how the word itself is understood.