Replication Data for: Do Voters and Non-Voters Differ in Their Policy Preferences?

The declining voter turnout across democracies has raised concerns regarding its implications for democratic representation. Yet, the extent to which low turnout may undermine representation in Europe remains unclear. Do the policy preferences of voters and non-voters differ? This research addresses that question by providing the first large-scale, cross-national examination of policy preference differences between voters and non-voters in European democracies. Using data from the 2014 and 2019 waves of the European Election Study, covering 29 European democracies, I analyze differences across the left-right spectrum, economic attitudes (i.e., redistribution, regulation, spending), social attitudes (i.e., immigration, same-sex marriage, environment, and civil liberties) and views on European integration. The results reveal some disparities between voters and non-voters, but these are generally sporadic, even within individual countries, suggesting that such disparities are not the norm. Still, when differences do arise, they are not trivial. The analysis of how the electorate's preferences would change under a hypothetical full turnout scenario suggests that these disparities can introduce meaningful biases. Using data from the British Election Study Internet Panel, I further distinguish between regular voters, peripheral voters, and perpetual non-voters, and find notable heterogeneity in their policy preferences. These findings show that when turnout is low, the electorate's overall stance reflects that of regular voters, but higher turnout mitigates this bias. Overall, the results suggest that while voters and non-voters in Europe typically hold similar policy views, occasional disparities can introduce representation bias in policy preferences, with implications for democratic representation and party strategies.