Across Western European democracies, the last 20 years have seen a growth of precarious employment and the rise of challenger parties. Both trends are especially marked in Italy, where occupational insecurity has become the norm and over half of the electorate has turned to a challenger party. In this article, I investigate the relationship between these two phenomena, addressing the question of whether and how precarity in the labor market influenced vote choice in the 2018 general election. First, I provide descriptive evidence that the Italian labor market shifted from dualism to generalized precarization. Second, I empirically investigate the relationship between precarity and voting in this context. The results show that the perception of precarity, not formal employment status, influenced voting behavior: it fostered participation, increased support for the Five Star Movement, and decreased support for the Democratic Party. These findings challenge core assumptions in the literature, first and foremost about precarious workers' low turnout rate, difficult mobilization, and consequent political irrelevance. They indicate that the electoral weight of precarious workers has increased, and their representation can be electorally beneficial.