Supplementary materials to "'Warming up' to populist leaders: A comparative analysis of Argentina and Spain"

What makes populist leaders, responsible for many episodes of democratic backsliding, especially appealing to a significant part of the electorate? In the following pages we argue that the effect of perceptions regarding leaders’ ‘warmth’ causes them to be perceived as having good intentions toward and even being part of ‘the people,’ resulting in a more positive overall evaluation among citizens with more critical views of democratic representativeness (external political efficacy). We test this hypothesis in two very different political systems, Argentina and Spain, using data from original surveys that contain batteries of questions on warmth and competence trait dimensions for multiple leaders in both countries. The results show that while perceptions of traits along both warmth and competence dimensions are important for the evaluation of all leaders in democratic systems, the interactive effect between external political efficacy and perceptions of warmth is important for explaining more positive evaluations of populist leaders.