This volume aims to provide consolidated analyses of the 2019 European elections and explanations about the future of the European party system, in a context in which the EU has to face many challenges, including the erosion of electoral support for mainstream parties and the increasing success of populist parties. The structure of the book is designed to combine the overall view on the role of elections in shaping the future European project with relevant case studies. The reader is given a perspective not only on the results of the European Parliament elections as such, but also on how these results are related to national trends which pre-exist and what kind of collateral effects on the quality of democracy they could have. Contributors include: Jan Bíba, Sorin Bocancea, Dóra Bókay, Radu Carp, József Dúró, Tomáš Dvořák, Alexandra Alina Iancu, Ruxandra Ivan, Petra Jankovská, Małgorzata Madej, Cristina Matiuța, Sergiu Mișcoiu, Valentin Naumescu, Gianluca Piccolino, Leonardo Puleo, Alexandru Radu, Mihai Sebe, Sorina Soare, Tobias Spöri, Jeremias Stadlmair, Martin Štefek, Piotr Sula, and Jaroslav Ušiak.