Why is right-wing populism successful? Who votes for right-wing populist parties (RWPPs)? Is there a programmatic winning formula for RWPPs? Why are some RWPPs more successful than others? Can social policies mitigate the success of RWPPs? And crucially, how should progressives respond to the right-wing populist parties? Find the answers to these and many more questions in this report. The report contains an extensive analysis across the European right-wing populist spectrum showing commonalities and regional differences as well as in-depth country case studies of right-wing populist parties in 17 European countries.