This chapter examines the dynamics of youth participation in the 2024 United States presidential election in comparison to previous elections alongside analysis other prominent recent elections in Europe and North America (including those Germany and Canada). Contrary to earlier Democratic “youthquakes,” (for Obama and Biden) youth turnout and support for Harris declined sharply, narrowing the generational divide. The analysis situates these shifts within broader trends of party dealignment, policy disillusionment, and economic insecurity following successive crises—from the 2008 financial crash to the post-pandemic cost-of-living crisis. While young Americans remain broadly socially liberal, many—particularly young men and less-educated voters—prioritized economic concerns and, so were more likely, to vote for Trump or not turn out. The chapter argues that Democratic incumbency, perceived policy failures, and ineffective communication eroded youth trust and mobilization.