Interest groups have a profound impact on public policy by advocating for specific issues and influencing lawmakers. These groups mobilize resources, conduct research, and engage in lobbying efforts to promote their agendas, often seeking to affect legislation and regulations that align with their interests. By leveraging public campaigns and grassroots support, interest groups can raise awareness and shift public opinion, leading to legislative changes. Additionally, they often help to bridge gaps between citizens and policymakers, representing diverse perspectives. However, their influence can raise concerns regarding equity, as some groups may possess more resources and access, skewing policy outcomes.