The published Stata syntax file (do-file) and Stata dataset can be used to replicate the results reported in the cited article. Abstract of the jorunal article: This study examines long-term patterns of political trust in Southern Europe through a comparison of Greece, Portugal, and Spain — countries that led the third wave of democratisation. Drawing on data from 45 Eurobarometer surveys (1997–2022), it tests four explanations of political trust: macroeconomic performance, corruption, ideological congruence, and party-system polarisation. The analysis highlights the varying importance of these factors across countries. Economic performance and political polarisation consistently influence trust, while corruption is a significant factor in Greece and Spain. Ideological congruence shows no substantial effect, except in Portugal. The study demonstrates that countries exposed to a common systemic shock may nonetheless develop divergent trajectories of political trust, shaped by the interaction of economic and political conditions. Further keywords: Political trust; congruence; economic performance; corruption

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