Martin Gilens and Benjamin Page Extended Interview

In his interview with Jon Stewart, Professor Gilens explained that they are not saying the United States is an oligarchy. Here is what they are saying: 

Among people who are trying to influence the government, the more money you have the more influence you have. What our work shows is that as you get down to the middle class, you just don't see any influence left.

Martin Gilens and Benjamin Page Extended Interview: Political scientists and professors Martin Gilens and Benjamin Page describe the results of their study "Testing Theories of American Politics," which indicates that policy in the United States is corruptly influenced by wealth.