The Influence of Pre-Election Polls on Undecided and Decided Voters During Electoral Campaigns in Spain

Keywords: Pre-election polls, electoral behavior, undecided voters, political campaign, Spain

Abstract

Pre-election polls constitute a key tool for citizens to understand the electoral landscape and assess which party or candidate has the highest chances in each election. This article examines whether these surveys have a differential impact on undecided voters compared to those who have already made their choice. Using a quantitative methodology, the study analyzes the influence of awareness with polling data in two general elections held in Spain, based on post-election surveys conducted by the CIS in April and November 2019. The findings suggest that the effects vary depending on the opinion climate and the context of party competition during the electoral campaign. Overall, while polls tend to reinforce the decisions of voters who have already made up their minds, for undecided voters, they provide additional information that may help them decide their vote at the last moment.

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Published
2025-03-11
How to Cite
Ramírez-Dueñas J. M. y Vinuesa Tejero M. L. (2025). The Influence of Pre-Election Polls on Undecided and Decided Voters During Electoral Campaigns in Spain. Política y Sociedad, 62(1), e94050. https://doi.org/10.5209/poso.94050