The document discusses different tactics used by interest groups to influence policymaking, including litigation, campaign contributions, and grassroots lobbying. Litigation is used by groups that lack popular support or legislative influence, or deal with issues of rights. Campaign contributions are used by groups with financial resources that need access to candidates. Grassroots lobbying is used by groups with popular support but lack of funds, as it requires fewer resources and encourages democratic participation. Examples of groups that use these techniques include the Sierra Club, NAACP, AMA, and NRA. The document also compares the goals of interest groups, which is to influence policy, versus political parties, which is to elect candidates to office. Interest groups support parties to gain access to policy