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Master's Dissertation
DOI
https://doi.org/10.11606/D.12.2018.tde-11072018-150455
Document
Author
Full name
Felipe Ricardo Durazzo
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2018
Supervisor
Committee
Rubin, David Daniel Turchick (President)
Campante, Filipe Robin
Monte, Daniel
Nakaguma, Marcos Yamada
Title in English
Welfare-improving misreported polls
Keywords in English
Costly voting
Misreporting
Pivotal voting
Polls
Voter turnout
Abstract in English
We introduce an electoral pollster in a two-candidate costly voting model to study the incentives that pollsters have regarding the release of poll results. In our model, the pollster has private knowledge about the distribution of citizens' preferences, but it may report false information to the public. If this happens, we say the pollster is misreporting the poll. An often heard criticism about pollsters is that they might manipulate in order to benefit some candidate. We show that they have incentives to misreport even in the absence of ideological motives. Moreover, misreported polls are welfare-improving relative to truthful polls.
Title in Portuguese
Ganhos de bem-estar via manipulação de pesquisas eleitorais
Keywords in Portuguese
Pesquisa eleitoral
Voto custoso
Voto pivotal
Abstract in Portuguese
Introduz-se um instituto de pesquisa eleitoral em um modelo de voto custoso a fim de estudar quais incentivos os institutos possuem ao divulgarem suas pesquisas. No nosso modelo, o instituto possui informação privada a respeito da distribuição de preferências da sociedade sobre os candidatos, mas pode escolher reportar incorretamente essa informação ao público. Se isso acontece, diremos que o instituto manipulou a pesquisa eleitoral. Uma preocupação comum das pessoas em relação aos institutos de pesquisa é a possibilidade de eles manipularem uma pesquisa eleitoral com o objetivo direto de beneficiar um determinado candidato. Nós mostramos que eles possuem incentivos para manipular a pesquisa mesmo na ausência de motivações partidárias. Ainda, essa manipulação aumenta o bem-estar da sociedade, em comparação com pesquisas verdadeiras.
 
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Publishing Date
2018-07-16
 
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