A Political Action Committee (PAC) is a type of special interest organization that raises and spends money to influence the outcome of political campaigns. An Association (ASSN) is another type of special interest organization that works to promote a particular cause or industry. Special interest organizations are typically formed by individuals or groups who have a shared goal or purpose, such as advocating for a certain policy or protecting the interests of a particular industry. These organizations often lobby government officials and use other tactics to influence public opinion and decision-making.