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Political economy in political science begins with a single, stubborn question: how do politics and economics shape each other? Different frameworks have answered that question by privileging different starting points—the market, the state, class, institutions, gender, or the global system. The history of the subfield is a series of competing analytical commitments, each offering a distinctive model of power, preferences, and causation, and each reacting to what earlier frameworks left out or took for granted.
Classical Political Economy (1776–1870) emerged from the work of Adam Smith, David Ricardo, and John Stuart Mill. Its core commitment was to treat the economy as a self-regulating sphere governed by natural laws—supply, demand, comparative advantage—that could be studied independently of political intervention. The state's proper role was limited: enforce contracts, provide public goods, and otherwise let market mechanisms allocate resources efficiently. Classical political economy assumed a fundamental harmony between individual self-interest and collective welfare, at least under competitive conditions. It modeled causation as flowing from economic activity to political outcomes, with politics largely reactive.
Marxist Political Economy (1848–Present) directly challenged that harmony. Karl Marx argued that the classical model mistook capitalism's surface appearance for its underlying reality. The real driver of economic life was class conflict between those who own the means of production (the bourgeoisie) and those who sell their labor (the proletariat). Surplus value—the difference between what workers produce and what they are paid—was extracted through exploitation, and the state was not a neutral arbiter but an instrument of class rule. Where classical political economy saw equilibrium, Marx saw crisis: falling rates of profit, immiseration, and revolutionary rupture. Later Marxist traditions, from Antonio Gramsci's concept of hegemony to dependency theory's focus on core-periphery relations, preserved the class lens while adding cultural and global dimensions. Marxist political economy remains a living tradition, especially in critical international political economy and in analyses of capitalist crisis, though its influence within mainstream political science narrowed after the 1970s.
By the mid-twentieth century, two new frameworks offered competing models of how politics and economics interact, each reacting against the class determinism of Marxism.
Pluralist Political Economy (1950–1980) treated power as dispersed among multiple interest groups—business, labor, farmers, consumers—rather than concentrated in a single ruling class. The state was not an instrument of capital but a neutral arena where groups competed for influence, and policy outcomes reflected the balance of organized pressures. Robert Dahl and Charles Lindblom provided the theoretical scaffolding: democracy worked because no single group dominated across all issues. Pluralism rejected Marxism's claim that economic structure determines political outcomes, insisting instead that political bargaining could reshape economic policy. But critics pointed out that business enjoyed structural advantages—investment decisions could discipline governments—and that pluralism underestimated how economic power translates into political power. By the 1980s, pluralism had largely faded as a distinct framework, though its emphasis on group competition survives in interest-group studies.
Rational Choice Theory (1960–Present) took a different path. Instead of studying groups or classes, it started with the individual as a utility-maximizing actor. Drawing on microeconomics, rational choice modeled political behavior—voting, lobbying, legislative bargaining, international conflict—as the product of strategic choices under constraints. Anthony Downs's An Economic Theory of Democracy (1957) and Mancur Olson's The Logic of Collective Action (1965) showed how rational self-interest could explain why people vote (or don't), why groups form (or fail to), and why public goods are underprovided. Rational choice's methodological individualism contrasted sharply with pluralist group-empiricism and Marxist class-holism: it did not assume that groups or classes act as unified agents, but derived collective outcomes from individual incentives. The framework became dominant in American political science from the 1980s onward, especially in formal modeling and empirical testing. Its critics argue that it assumes overly narrow motivations and ignores how preferences are shaped by culture, identity, and institutions.
The 1970s saw two simultaneous expansions that pushed political economy beyond its domestic, class-focused, and gender-blind assumptions.
Feminist Political Economy (1970–Present) argued that all prior frameworks—classical, Marxist, pluralist, rational choice—shared a hidden assumption: the public/private divide. By treating the household and unpaid care work as outside the economy, they rendered gender invisible. Feminist scholars like Lourdes Benería and Nancy Folbre showed that reproductive labor—childbearing, childrearing, housework—is essential to the economy but systematically devalued. The state, far from being neutral, enforces gendered divisions through family law, welfare policy, and labor regulation. Feminist political economy intersects with Marxist concepts of social reproduction but goes further: it treats gender as a constitutive axis of power, not a secondary effect of class. The framework remains active, especially in comparative welfare state research and development economics, and has pushed other frameworks to acknowledge care work and household dynamics.
International Political Economy (IPE) (1970–Present) shifted the unit of analysis from the nation-state to the global system. IPE asks how states and markets interact across borders—trade, finance, multinational corporations, international institutions. It is not a single framework but a field of competing analytical traditions. The liberal tradition (e.g., Robert Keohane) emphasizes cooperation through international institutions and the mutual gains from open markets. The realist tradition (e.g., Robert Gilpin) argues that states pursue power and security, and that economic interdependence can generate conflict. The structuralist tradition (drawing on Marxism) sees global capitalism as a system of core-periphery exploitation, with international organizations serving dominant interests. IPE's internal debates mirror the subfield's broader tensions: liberals assume harmony of interest, realists see zero-sum competition, structuralists see class domination. IPE remains a vibrant subarea, with hegemonic stability theory, global governance, and the politics of financial regulation as ongoing concerns.
New Institutionalism (1980–Present) emerged as a response to the limitations of both rational choice and older behavioral approaches. Its central claim is that institutions—formal rules, informal norms, organizational structures—shape political and economic outcomes in ways that cannot be reduced to individual preferences or class interests. But New Institutionalism is itself divided into three variants. Rational choice institutionalism (e.g., Kenneth Shepsle, Barry Weingast) treats institutions as constraints that rational actors design to solve collective action problems; preferences remain exogenous. Historical institutionalism (e.g., Kathleen Thelen, Paul Pierson) emphasizes path dependence, critical junctures, and how institutions shape preferences over time; it often draws on comparative historical analysis. Sociological institutionalism (e.g., John Meyer, Walter Powell) sees institutions as carriers of cultural scripts and legitimacy, not just efficiency-enhancing rules. New Institutionalism thus became a meeting ground: it absorbed rational choice's rigor while accommodating historical contingency and cultural meaning. It is now the dominant framework in comparative political economy, especially in studies of welfare states, labor markets, and economic governance.
Today, the leading frameworks in political economy are New Institutionalism (especially historical and rational choice variants) and Rational Choice Theory, with Feminist Political Economy and Marxist Political Economy occupying smaller but persistent niches. International Political Economy remains a distinct subarea with its own internal pluralism. There is broad agreement that institutions matter, that preferences are not simply given, and that any adequate explanation must attend to both political and economic forces. But deep disagreements remain. Rational choice theorists insist on deductive modeling and exogenous preferences; historical institutionalists argue that preferences are endogenous to institutional contexts and that causal mechanisms are best traced through process. Feminist and Marxist scholars continue to press the point that gender and class are not optional add-ons but constitutive of how political economies work. The subfield's vitality lies in this ongoing tension: no single framework has settled the question of how politics and economics shape each other, and each new approach has revealed something that earlier ones overlooked.