…It’s important to note that the “mass based interest groups” include groups like the National Rifle Association and American Israel Public Affairs Committee which do not share the interests of average citizens. At the same time, one corporate lobbying organization, the American Hospital Association, is actually slightly correlated with the interests of average Americans. To parse out which groups are aligned with the preferences of Americans and which are positively malign, I used data from Gilens’s book Affluence and Influence. I stuck to groups which had at least one statistically significant correlation (either positive or negative) with one group of voters (10th percentile, 50th percentile and 90th percentile). This comparison yields some interesting results. First, we can see that most unions actually take positions that strongly correlate with the preferences of all Americans, although the correlation is stronger for the lower and middle class….
Second, we can see that corporate lobbying groups do not, with one exception.
…To illustrate these differences, I’ve put the organizations on a scatter plot, divided into four quadrants. The y-axis shows where an organization aligns with the the top 90th percentile. The x-axis shows an organization’s correlation with the bottom 10th percentile. An organization in the upper right quadrant shares the preferences of the wealthy and the poor. An organization in the lower left does is working against the interests of Americans. Here we see that unions are all in the top right quadrant. No corporations are in the right half of the chart, indicating that none share the preferences of the poor….
Testing Theories of American Politics: Elites, Interest Groups, and Average Citizens
Source: Martin Gilens and Benjamin I. Page, Perspectives on Politics (forthcoming), March 7, 2014