Interest groups significantly impact legislative processes by advocating for specific policies and influencing decisions through lobbying. These groups aim to persuade lawmakers by providing research, funding, and mobilizing public support. They can represent a diverse range of interests, from corporations to environmental activists. Their presence can shape legislative agendas and even determine the passage of bills by exerting pressure on legislators. However, their influence can also lead to concerns about inequality, as some groups may have more resources to advocate effectively than others.