The relationship between emotions and populism has attracted growing scholarly attention, yet a systematic synthesis of this literature remained lacking. This scoping review aimed at mapping and synthesizing the existing literature on how emotions influence attitudes and behaviors related to populism. Grounded in the ideational approach to populism (Mudde, 2004), this review focused on the demand side of populist phenomena, examining the emotional dimensions that drive populist attitudes and political behavior among citizens. Using the SPIDER framework to define eligibility criteria, peer-reviewed articles, conference papers, and theses published since 2004 were systematically searched across multiple scientific databases, with no geographic restrictions. Noted limitations included the lack of a unified theory of emotion in political psychology, variability in the operationalization of both emotion and populism across studies, and the contextual diversity of populist phenomena across national settings. This review adhered to the PRISMA-ScR guidelines and was pre-registered on the Open Science Framework. The most common emotions relating to populism identified in the literature were anger, fear/anxiety, sadness, joy, and hope, each showing distinct relationships with populist attitudes and behaviors, but with a clear highlight for the role of anger. By systematically mapping this emerging field, this scoping review provided a foundation for future empirical research on the emotional underpinnings of contemporary populism.