Does the prospect of further sovereignty loss fuel Euroscepticism? A population-based survey experiment

Whether further European integration is desirable is an ongoing question in public opinion research: both extant research and the outcome of various EU-related referendums show that many citizens hold negative views on proposals that lead to further loss of national sovereignty. An important issue thus arises: does the prospect of such additional sovereignty loss increase negativity towards the EU? This study attempts to answer this question using a pre-registered original survey experiment conducted among members of a nationally-representative high-quality Dutch panel. Our focus is on how exposure to proposed abolishment of EU member states’ right of veto affects EU attitudes. In addition, we analyse whether the exposure effect is shaped by 1) citizens’ prior populist attitudes and 2) the Eurosceptic character of the medium. Concerning the former, informed by recent in-depth qualitative research, we hypothesise that populist attitudes aggravate the extent to which exposure to potential loss of national sovereignty leads to more negative EU attitudes. Concerning the latter, we hypothesise that exposure via a Eurosceptic medium might either aggravate or abate the extent to which the newspaper message leads to more negative EU attitudes. We discuss our findings and provide suggestions for further research.