Interest groups a profound impact on politics in the United States

Explain why interest groups have had a profound impact on politics in the United States. Provide examples of the various interest groups and provide data
to support their impact in supporting either Republican or Democratic candidates. Discuss the strategies (both inside and outside) that interest groups use in
attempting to influence law makers in creating public policy. (Chapter 10)
Remember, you need to demonstrate you read the chapters in the book. Please provide in-text citation of the specific pages you used to get your information.
You are also welcome (in addition to) use outside sources, but you will be graded on the evidence of your reading of the textbook and your overall analysis.