In modern American politics, interest groups exert significant influence over the policymaking process. These groups often engage in various activities to sway legislators, including lobbying efforts, grassroots campaigns, and funding political candidates. However, the effectiveness of these strategies can vary based on several factors, including the resources at the disposal of the interest group and the political context within which they operate.
Which of the following statements best captures a fundamental reason why some interest groups may be more successful than others in achieving their policy goals?