1. Introduction - Robert A. Huber and Michael Jankowski 2. Populism Old and New: A Historical Trajectory - Luca Manucci 3. Conceptualizations of Populism - Daphne Halikiopoulou and Sofia Vasilopoulou 4. Populism and Democracy - Saskia P. Ruth-Lovell, Rosa Kindt, Joep van Lit and Marie-Isabel Theuwis 5. Populism and Ideology - Robert A. Huber and Michael Jankowski 6. Qualitative Approaches in Populism Research - Alexander Alekseev and Emilia Palonen 7. Measuring Populism using Expert Surveys - Nina Wiesehomeier and Maurits J. Meijers 8. Measuring Populism through Text Analysis - Lisa Zehnter 9. Measuring Populism among Citizens - Bruno Castanho Silva 10. Populism, Media and Political Communication - Edina Strikovic and Linda Bos 11. Support for Populist Parties - Patricia Rehus and Steven M. Van Hauwaert 12. Party Competition and Populist Parties - Sofia Marini and Markus Wagner 13. The Impact of Populist Parties in Government - Fred Paxton 14. Populism and Descriptive Representation - Christina-Marie Juen 15. Populism in the World - Robert A. Huber and Michael Jankowski