The article presents the clustering of Polish citizens based on the empirical dimension of support for European integration. The structure of the work is based on three key elements constituting the basis of the presented text. The first refers to the development of a scale to measure the extent of support for the integration of Poland with the EU. The second element covers an area of support scale modelling. After the substantial and statistical analysis of the adequacy of the probability distribution for the support scale, it was decided that a model in which the scale underwent mixing non-standard Beta distributions would be adopted. Applying the Maximal Likelihood Method (ML), the components for its fitted probability densities and estimators of prior (or mixing) probabilities were indicated. The procedure allowed us to define the clusters of which the population of voters was composed. The paper’s final section presents many practical and theoretical conclusions for political parties and scientists interested in the discussed area. The novelty of applying the ML method goes hand in hand with the findings that previously appeared in political science literature, although under different economic and geopolitical conditions.

This paper explores the economic and non-economic factors that could potentially lead to a Polish decision to remain within or leave the EU, following a future potential Polexit referendum. The study aims to determine the relative impact of Polish citizens’ values and attitudes on their support for their country’s continued EU membership and integration, at such a crucial time. The research is based on a survey conducted in December 2021, with a stratified sample of 1,517 respondents, and a statistical analysis of the findings. The results suggest that the relative importance of these factors could vary considerably, with economic factors potentially playing a less significant role than sociocultural and political elements. We argue that this projected outcome is likely to be influenced by citizens’ socio-demographic backgrounds, their perceived levels of economic security or insecurity, and differences in their economic and non-economic values, thereby creating potential opportunities for future populist Eurosceptic politicians in Poland to exploit, underlining the potential implications of these findings.