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Nongovernmental Campaign Communication Providing Ballot Secrecy Assurances Increases Turnout: Results From Two Large-Scale Experiments*


Doubts about the integrity of ballot secrecy persist and depress political participation among the American public. Prior experiments have shown that official communications directly addressing these doubts increase turnout among recently registered voters who had not previously voted, but evaluations of similar messages sent by nongovernmental campaigns have yielded only suggestive effects. We build on past research and analyze two large-scale field experiments where a private nonpartisan nonprofit group sought to increase turnout by emphasizing ballot secrecy assurances alongside a reminder to vote in a direct mail voter mobilization campaign during the 2014 midterm election. Our main finding is that a private group’s mailing increases turnout by about 1 percentage point among recently registered nonvoters. This finding is precisely estimated and robust across state political contexts, but is not statistically distinguishable from the effect of a standard voter mobilization appeal. Implications and directions for future research are discussed.

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Alan S. Gerber ( and Gregory A. Huber ( are Professors in the Department of Political Science, Institution for Social and Policy Studies, Yale University, 77 Prospect Street, PO Box 208209, New Haven, CT 06520-8209. Albert H. Fang ( and Andrew Gooch ( are Postdoctoral Associates in the Institution for Social and Policy Studies, Yale University, 77 Prospect Street, PO Box 208209, New Haven, CT 06520-8209. To view supplementary material for this article, please visit

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Bishop Cortlandt F. 1893. History of Elections in the American Colonies. New York: Columbia College.
Claassen Ryan L., Magleby David B., Monson J. Quin, and Patterson Kelly D.. 2008. ‘‘At Your Service’: Voter Evaluations of Poll Worker Performance’. American Politics Research 36:612634.
Druckman James N. 2001. ‘On the Limits of Framing Effects: Who Can Frame?’. Journal of Politics 63(4):10411066.
Evans Eldon C. 1917. A History of the Australian Ballot System in the United States. Chicago, IL: The University of Chicago Press.
Fredman Lionel E. 1968. The Australian Ballot: The Story of an American Reform. East Lansing, MI: Michigan State University Press.
Gerber Alan S., Huber Gregory A., Biggers Daniel R., and Hendry David J.. 2014. ‘Ballot Secrecy Concerns and Voter Mobilization: New Experimental Evidence About Message Source, Context, and the Duration of Mobilization Effects’. American Politics Research 42(5):896923.
Gerber Alan S., Huber Gregory A., Doherty David, and Dowling Conor M.. 2013a. ‘Is There a Secret Ballot? Ballot Secrecy Perceptions and Their Implications for Voting Behaviour’. British Journal of Political Science 41(1):77102.
Gerber Alan S., Huber Gregory A., Doherty David, Dowling Conor M., and Hill Seth J.. 2013b. ‘Do Perceptions of Ballot Secrecy Influence Turnout? Results from a Field Experiment’. American Journal of Political Science 57(3):537551.
Green Donald P., McGrath Mary C., and Aronow Peter M.. 2013. ‘Field Experiments and the Study of Voter Turnout’. Journal of Elections, Public Opinion, and Parties 23(1):2748.
Hovland Carl I., and Weiss Walter. 1951–1952. ‘The Influence of Source Credibility on Communication Effectiveness’. Public Opinion Quarterly 15:635650.
Lupia Arthur. 1994. ‘Shortcuts Versus Encyclopedias: Information and Voting Behavior in California Insurance Reform Elections’. American Political Science Review 88(1):6376.
Malhotra Neil, Michelson Melissa R., and Valenzuela Ali Adam. 2012. ‘Emails from Official Sources Can Increase Turnout’. Quarterly Journal of Political Science 7(3):321332.
Wigmore John H. 1889. The Australian Ballot System as Embodied in the Legislation of Various Countries. Boston, MA: C.C. Soule.
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Political Science Research and Methods
  • ISSN: 2049-8470
  • EISSN: 2049-8489
  • URL: /core/journals/political-science-research-and-methods
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