These theories are analytical models, not mutually exclusive constitutional systems. The United States is chiefly a representative republic: citizens elect officials who make most policy. The same system can show pluralist competition on one issue, elite concentration on another, and participatory activity during a social movement. Direct democracy describes voters themselves deciding a measure, such as through an initiative or referendum. Constitutional democracy combines popular decision making with higher-law limits. Evidence determines the best model: identify who participates, how access and influence are distributed, and which process connects preferences to outcomes.

A majoritarian account fits when a numerical majority's preference drives policy. Pluralism fits when multiple independent groups compete and influence varies across issues. Elite theory fits when the same small, advantaged circle repeatedly controls access and outcomes. Broad citizen action supports a participatory account; an inclusive citizen body that exchanges reasons and revises recommendations supports a deliberative account. Because one case may contain several features, choose the model most directly established by the facts.

The presence of interest groups alone does not prove pluralism; the stem must show competition and dispersed influence. Inequality alone does not prove elite control; look for concentrated, durable power. Participation alone does not establish deliberation, which requires reason exchange rather than merely high activity. "Majoritarian" does not mean constitutionally unlimited, and voting for representatives is not direct democracy.

Video lesson: Natural rights, social contract, democracy, republicanism and limited government