For recent data on voice inequality with respect to non-electoral political participation, see The Internet and Civic Engagement Sep 1, 2009 by Aaron Smith, Kay Lehman Schlozman, Sidney Verba, Henry Brady, a Pew research study.

Blog on Political Inequality since 2010
For recent data on voice inequality with respect to non-electoral political participation, see The Internet and Civic Engagement Sep 1, 2009 by Aaron Smith, Kay Lehman Schlozman, Sidney Verba, Henry Brady, a Pew research study.