Abstract: | Turnout among registered voters remains high in post-authoritarian Chile, but valid votes as a percentage of the voting-age population have fallen significantly in the post-authoritarian period and blank/null voting, non-registration, and abstention are on the rise. Why? This article tests three rival explanations: (1) lack of political support; (2) depoliticization; and (3) a generational shift in political culture. These theories are not mutually exclusive, but rather explain distinct contours of this electoral phenomenon. Compared to valid voters, blank/null voters exhibit less support for the political system, are less politicized, and more likely to have reached legal voting age during the democratic transition. Although non-registrants also exhibit less political support and are more depoliticized than valid voters, their behaviour is largely explained by a new political culture that stresses individual as opposed to collective participation. In addition to shedding light on this Chilean puzzle, the findings enhance the debates over electoral participation, mandatory voting, and quality of democracy in Latin America and other nascent democracies. |