When voters in political elections intend to vote for a candidate who represents their political interests, they cannot avoid being influenced by the visual appearance of the candidates. In fact, many political campaigns are dominated by billboard advertising that mainly focuses on politicians' face portraits. While extant research already showed that a candidate's visual appearance has an impact on electoral outcomes, the present research goes a step further and investigates which specific facial features increase or decrease a politician's likelihood of winning an election. Evaluating 17 facial features, we identified mouth width, the ratio of eye height/width, and eyebrow height as relevant predictors of electoral success. In particular, we find across a correlative study, an experimental study, and an analysis of German Federal Elections that a wide mouth and large eyes that extend vertically have a robust and coherent influence on the likelihood of getting votes. Thin eyebrows increase the likelihood of getting votes in our hypothetical voting scenarios but not in the analysis of real election data. Furthermore, we show that the effects of the mouth and the eyes are statistically mediated by perceived trustworthiness and perceived dominance. In terms of real-life relevance, our analysis suggests that these three facial features can make the difference in close races.
