Who Governs? Democracy and Power in an American City

Dahl argues that political power in American democracy is fragmented and dispersed among competing interest groups, each dominant in different policy areas, rather than concentrated in a unified elite. He explicitly rejects C. Wright Mills's 'power elite' thesis, which held that a cohesive alliance of corporate, military, and political leaders dominates all major decisions. Dahl's empirical study of New Haven found no single group controlling outcomes across nominations, redevelopment, and education—different actors prevailed in each domain.

Dahl pioneered the 'issue-area' or 'decision-making' approach, examining who actually influenced outcomes in three concrete policy domains: political nominations, urban redevelopment, and public education. He combined archival research, interviews, and participant observation to identify which individuals and groups successfully initiated or vetoed proposals. This method was innovative because it operationalized power as observable influence over specific decisions, moving beyond reputational or positional approaches. Critics later argued this narrow focus excluded 'nondecisions'—issues kept off the agenda by dominant groups.

A Preface to Democratic Theory (1956) is a work of theoretical construction, examining and rejecting the Madisonian and populist models before proposing polyarchal democracy as more accurate. Who Governs? (1961) is an empirical case study applying a pluralist framework to real decision-making in New Haven. The Preface introduces the concept of polyarchy as a regime type; Who Governs? demonstrates pluralist power distribution within one such polyarchy. The former is abstract and comparative; the latter is concrete and localized.

The debate pitted 'elitists' like C. Wright Mills, who argued power is controlled by a cohesive, entrenched elite, against 'pluralists' like Dahl, who argued power is dispersed among competing groups. Who Governs? became the definitive pluralist empirical statement, directly challenging Mills's thesis through detailed evidence. The debate shaped political science for decades, with critics later arguing that Dahl's focus on observable decisions missed structural power and agenda control, while defenders insisted he provided a more rigorous methodology than the elitists' reputational approach.

Critics argue that Dahl's rigorously empirical method, which focused on overt, measurable influence over decisions, rendered invisible the systematic racial hierarchy that structured New Haven politics. African Americans in the 1950s faced marginalization so entrenched it did not appear as active 'decision-making' in Dahl's framework. Peter Bachrach and Morton Baratz's concept of 'nondecisions,' and later Steven Lukes's 'third face of power,' emerged partly in response to this limitation. Dahl engaged more directly with racial inequality in his later work, notably How Democratic Is the American Constitution?.

Dahl's thinking shifted toward greater emphasis on participation and equality in the 1970s and 1980s, responding to critiques of pluralism and the political upheavals of the 1960s. His later work, including Democracy and Its Critics (1989), offered a more developed theory of polyarchal democracy, while books like How Democratic Is the American Constitution? (2003) adopted a distinctly more pessimistic tone about American democratic institutions. He increasingly acknowledged corporate capitalism's tension with political equality, though he never fully embraced the elitist position.