Influence of Opinion Polls on Electoral Behavior

Opinion polls exert a multifaceted influence on electoral behaviour by conveying collective sentiments that can shape individual voting decisions, turnout and campaign dynamics. Voters assimilate poll results through cognitive heuristics—some follow perceived frontrunners (the bandwagon effect), while others rally behind underdog contenders out of fairness concerns. Minority‐view holders may self‐censor under a spiral of silence, dampening the visibility of alternative positions. Beyond discrete psychological effects, polls function as evolving information streams: voters integrate sequential releases via belief‐updating processes that balance prior convictions against perceived poll precision. Media framing and graphical presentation further modulate the persuasive power of polls, with narrow chart scales exaggerating margins and partisan biases influencing credibility judgments. Such mechanisms have global significance, affecting campaign strategy, journalistic practice and regulatory efforts to preserve electoral integrity.

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Influence of Opinion Polls on Electoral Behavior publication trend

The graph below shows the total number of articles in influence of opinion polls on electoral behavior across all publications each year (not limited to Nature Index journals).

Technical terms

Bandwagon effect: Voter tendency to support a party or candidate shown as leading in opinion polls.

Spiral of silence: Reluctance to express minority opinions publicly due to perceived majority consensus.

Underdog effect: Voter inclination to back parties or candidates trailing in polls out of fairness or counter‐majoritarian sentiment.

Dynamic Bayesian learning: Process by which individuals update beliefs by integrating new poll data with prior convictions, weighted by perceived information precision.

References

1. Social conformity or attitude persistence? The bandwagon effect and the spiral of silence in a polarized context. Journal of Elections Public Opinion and Parties (2023).
2. Perceptions of opinion poll credibility: The role of partisan bias. Party Politics (2022).
3. Disentangling the Factors Behind Shifting Voting Intentions: The Bandwagon Effect Reflects Heuristic Processing, While the Underdog Effect Reflects Fairness Concerns. Journal of Social and Political Psychology (2022).
4. Learning from Polls During Electoral Campaigns. Political Behavior (2022).
5. Predicting a win by a small margin: The effect of graphic scaling in published polls on voters' predictions. Journal of Behavioral Decision Making (2023).