Publication: Polling in a proportional representation systemen
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2018-08-01
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Springer
Abstract
We study the effects of opinion polls on election results in proportional
representation systems. Moderate voters have preferences over the vote shares received
by the parties so that an agent’s optimal voting decision might depend on the other
agents’ behavior. A voter’s information about other voters’ behavior can be improved
through a series of opinion polls.We show that the mass of undecided voters decreases
monotonically with the number of polls, but may not necessarily disappear. Voters
who remain undecided have centrist ideologies. On average a series of polls brings
the society closer to complete information even though specific polls may push the
election result away from the complete information case.
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Bibliographic citation
Mavridis, C., & Ortuño-Ortín, I. (2018). Polling in a proportional representation system. Social Choice and Welfare, 51 (2), pp. 297-312.