The Center for the Evolution of Democracy (group advocates that lobbyists only present their views to our representatives in organized public forums)

Center for Governmental Studies

The Heritage Foundation

The Initiative and Referendum Institute

David S. Broder, Democracy Derailed : Initiative Campaigns and the Power of Money (New York, Harcourt Brace, 2000)

Thomas Cronin, Direct Democracy: the Politics of Initiative, Referenda and Recall (Cambridge, Mass. Harvard University Press, 1989)

Ken Silverstein, Washington on $10 Million a Day: How Lobbyists Plunder the Nation (Monroe, Maine, Common Courage Press, 1998).