Voter turnout has declined across established democracies, which has been accompanied by an increase in turnout disparities along class lines. In contrast to most advanced democracies, class voting has largely been neglected in Canada. Using the entire series of the Canadian Election Study (1965–2021), this article examines the turnout gap in Canada over time by class, education, and income, and whether the offerings of political parties impact these relationships. Results find major class-based participatory inequalities, which have worsened over time. The magnitude of the turnout gap between lower and higher socio-economic status (SES) individuals has mainly been driven by the demobilization of lower-SES individuals and a significant factor is the reduced saliency of economic issues in the party system. The findings contribute to our understanding of how economic inequalities translate into political inequalities and show that rising turnout inequality between politically relevant cleavages, represents a deterioration of democratic representation.