About: Kay Lehman Schlozman, Sidney Verba, and Henry Brady, The Unheavenly Chorus, Unequal Political voice and the Broken Promise of American Democracy, 2012. Martin Gilens, in Affluence and Influence. Economic Inequality and Political Power in America, 2012. Jacob Hacker and Paul Pierson, Winner-Take-All Politics, How Washington Made the Rich Richer—and Turned Its Back on the Middle Class, 2011.