In 1974, Richard Simeon and David Elkins published an influential analysis of provincial political cultures. Nearly half a century later, their results still operate as the baseline against which new studies compare their own results. In this article, I re-examine their conclusions, combining five decades of Canadian public opinion survey data (1974–2019). The article replicates their analysis by focusing on three dimensions of political culture examined by Simeon and Elkins: political cynicism, internal political efficacy and external political efficacy. It also expands on their work by accounting for contextual factors that can potentially drive or hinder provincial differences in political culture. The results suggest that Simeon and Elkins’ interpretation of Canadian provincial political cultures needs to be updated, as the patterns they found differ markedly from those identified in this article.