Everybody follows the crowd? Effects of opinion polls and past election results on electoral preferences

Magdalena Obermaier, Thomas Koch, Christian Baden

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Opinion polls are a well-established part of political news coverage, especially during election campaigns. At the same time, there has been controversial debate over the possible influences of such polls on voters' electoral choices. The most prominent influence discussed is the bandwagon effect: It states that voters tend to support the expected winner of an upcoming election, and use polls to determine who the likely winner will be. This study investigated the mechanisms underlying the effect. In addition, we inquired into the role of past electoral performances of a candidate and analyzed how these (as well as polls) are used as heuristic cues for the assessment of a candidate's personal characteristics. Using an experimental design, we found that both polls and past election results influence participants' expectations regarding which candidate will succeed. Moreover, higher competence was attributed to a candidate, if recipients believe that the majority of voters favor that candidate. Through this attribution of competence, both information about prior elections and current polls shaped voters' electoral preferences.

Original languageAmerican English
Pages (from-to)69-80
Number of pages12
JournalJournal of Media Psychology
Issue number2
StatePublished - Apr 2017

Bibliographical note

Publisher Copyright:
© 2016 Hogrefe Publishing.


  • Bandwagon effect
  • Competence attribution
  • Electoral preferences
  • Incumbency bonus


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