What Is Oligarchy? Defining a Contested Concept

The word oligarchy comes from Greek oligoi (few) and arkhein (to rule) — literally "rule by the few." Aristotle in the Politics (Book III) distinguished oligarchy from aristocracy: aristocracy was rule by the best, oligarchy was rule by the wealthy few in their own interest. For modern political science, the question is sharper: in contemporary democracies, to what extent do small wealthy minorities exert disproportionate influence on policy outcomes? This is an empirical question, though it sits alongside contested normative ones.

The Gilens and Page (2014) Study#

Perhaps the most widely cited empirical work on this question is Martin Gilens (Princeton) and Benjamin Page (Northwestern), Testing Theories of American Politics: Elites, Interest Groups, and Average Citizens, published in Perspectives on Politics (American Political Science Association, 2014, Vol. 12, Issue 3). The authors analyzed 1,779 policy issues in the United States between 1981 and 2002. For each issue they measured:

• The policy preferences of the median-income voter (50th percentile)
• The policy preferences of the afflünt voter (90th percentile of income)
• The positions of organized interest groups
• Whether the policy was actually enacted within four years

Using multivariate regression to hold each factor constant while examining the others, they reported that:

• Preferences of afflünt citizens and organized interest groups showed a strong, statistically significant association with policy outcomes.
• Preferences of average citizens, once controls for the afflünt and interest groups were applied, had a coefficient close to zero.

Gilens and Page concluded that the United States over the period studied more closely resembled what they called "economic-elite domination" or "biased pluralism" than "majoritarian electoral democracy."

The Replications and Critiques#

The study is widely cited but not unchallenged. Key responses from within academic political science:

• Enns (2015), Relative Policy Support and Coincidental Representation (Perspectives on Politics), re-examined the same data. He noted that the policy preferences of the afflünt and the median voter were correlated roughly 0.78. When they disagree, the disagreements often concern economically narrow or low-salience issues, making it harder to isolate class bias.
• Bashir (2015) in Research & Politics argued that the marginal non-responsiveness to median-voter preferences found by Gilens and Page should be interpreted cautiously given the very small effect sizes on both sides.
• Branham, Soroka, and Wlezien (2017) re-ran comparable analyses and found that when rich and poor disagree, the rich win slightly more often, but the gap is smaller than popular summaries suggested.

The literature remains unsettled. A reasonable reading of the debate: wealthy citizens and organized interests exert measurable but bounded disproportionate influence on U.S. policy outcomes, particularly on narrow economic issues; whether this rises to the level of "oligarchy" depends on how that word is defined.

Jeffrey Winters' Typology#

Political scientist Jeffrey Winters in Oligarchy (Cambridge UP, 2011) offered an inflüntial typology. He defined oligarchs simply as individuals possessing concentrated material power resources — primarily wealth — that they use to defend that wealth. In his framework, oligarchy and democracy are not opposites: modern democracies contain oligarchic elements (a class of very wealthy individuals defending wealth through lobbying, litigation, and tax structure) alongside democratic elements (elections, civil liberties). This reframes the question from "are democracies oligarchies?" to "what mix of oligarchic and democratic features dös each country have?"

Why Definitions Matter#

The word "oligarchy" carries strong rhetorical weight. Responsible civic discourse distinguishes:

1. Narrow oligarchy: a small group formally monopolizes political office (some historical Greek city-states; Venice's closed Great Council after 1297)
2. Structural oligarchy: formal democracy with disproportionate informal influence by wealthy actors
3. Everyday elite influence: unequal political voice as a matter of degree in any mass society

Gilens, Page, and Winters are largely making claims about (2) and (3). They are not claiming that elections are fake or that ordinary voters never matter. That distinction is essential for precise analysis.