Which levels of religiosity are most associated with terrorism threat perception amid conflict and why? Using three waves of the Israel National Election Study conducted around national elections (2015, 2019, 2022; pooled N = 1,848), we estimate cumulative link models with multi-point religiosity measures to examine nonlinear effects. Results reveal a robust inverted U-shaped relationship: threat perception peaks at intermediate religiosity and declines among both the very religious and the secular. The pattern holds across election cycles and after adjusting for political orientation, gender, education, and age. We interpret these findings through the concept of existential clarity, arguing that coherent religious and secular worldviews provide stable interpretive frameworks that buffer perceived threat, whereas intermediate positions may reflect lower belief-system coherence. By integrating nonlinear modeling with religion–politics theory, the study reconciles inconsistent findings in the literature and clarifies how religiosity structures threat perception in democracies facing sustained insecurity.
