An organization of people with shared policy goals entering the policy process at several points to try to achieve those goals. Interest groups pursue their goals in many arenas.
A theory of government and politics emphasizing that politics is mainly a competition among groups, each one pressing for its own preferred policies.
A theory of government and politics contending that societies are divided along class lines and that an upper-class elite will rule, regardless of the formal niceties of governmental organization.
A theory of government and politics contending that groups are so strong that government is weakened. Hyperpluralism is an extreme, exaggerated, or perverted form of pluralism.
A network of groups within the American political system that exercise a great deal of control over specific policy areas. Also known as iron triangles, subgovernments are composed of interest group leaders interested in a particular policy, the government agency in charge of administering that policy, and the members of congressional committees and subcommittees handling that policy.
All the people who might be interest group members because they share some common interest. A potential group is almost always larger than an actual group.