The second edition of the EPAC expert survey on ethnonationalism in party competition : testing for validity and reliability

Abstract

This research note presents EPAC 2017, a dataset resulting from the second round of an expert survey on ethnonationalism in party competition. EPAC provides cross-sectional data on the positions of (ethno-) national and mainstream parties on an ethnonational (also often referred to as ‘territorial’ or ‘centre-periphery’) dimension, as well as other important dimensions of political competition. The 2017 edition covers 222 political parties in 22 multinational European countries. The research note presents the main survey items and performs a series of validity and reliability tests on the data. Results show that EPAC 2017 provides valid and reliable measures of party positions on an ethnonational dimension. A short analysis of party system changes in Spain and Bosnia and Herzegovina illustrates the opportunities of combining the 2011 and 2017 editions. The combined dataset allows studying the mobilization of the centre-periphery cleavage in party competition across Eastern and Western Europe and over time.