A collection of people or organizations that tries to influence public policy.
pluralist theory
The theory that political ppower is distributed among a wide array of diverse and competing interest groups.
disturbance theory
The theory that interest groups form as a result of changes in the political system.
public interest group
An organization that seeks a collective good that will not selectively and materially benefit group members.
economic interest groups
A group with the primary purpose of promoting the financial interests of its members.
earmark
Funds that an appropriations bill designates for specific projects within a state or congressional district.
lobbyist
Interest group representative who seeks to influence legislation that will benefit his or her organization or client through political and/or financial persuasion.
trade association
A group that represents a specific industry.
lobbying
The activities of a group or organization that seek to persuade political leaders to support the group's position.
free rider program
Potential members fail to join a group becuase they can get the benefit, or collective good, sought by the group without contributing the effort.