Why is the decline in rates of voting and the correlation of income with voting and other forms of political participation a matter of concern according to Voos? Think about Hudson's review of "models of democracy" (Protective Democracy, Developmental Democracy, Pluralist Democracy, and Participatory Democracy). Under which models would these facts be of little concern; under which models would they be of great concern? Which of these theories does Voos use in her essay and which does she ignore?