Present at creation: Italian mass support for European integration in the formative years

Abstract This article analyzes a period usually neglected in empirical studies of public opinion and European integration: the formative years between the early 1950s and the late 1960s. The analysis is based on one country – Italy – in which the European process was a source of deep political cleavage in the formative phase. The study of the sources and dynamics of support in these years sheds a different light on the determinants of support. More specifically, a pooled multivariate logistic analysis of six surveys conducted between 1952 and 1970 shows two things. First, it shows that public support in Italy was driven mostly by considerations that were affective and political rather than economic and utilitarian. Second, it explains under which conditions the political factors behind support (and opposition) for European integration in the 1950s and 1960s changed over time, mostly in reactions to international events and to developments in European institutionalization. The article points to the bottom‐up nature of change in public support for European integration; changes in public opinion affected party positions, rather than vice versa.