Religion can be a source of undemocratic attitudes but also a contributor to democratic norms. This article argues that different dimensions of religiosity generate contrasting effects on democratic attitudes through different mechanisms. The private aspect of religious belief is associated with traditional and survival values, which in turn decrease both overt and intrinsic support for democracy. The communal aspect of religious social behaviour increases political interest and trust in institutions, which in turn typically lead to more support for democracy. Results from multilevel path analyses using data from fifty-four countries from Waves 4 and 5 of the World Values Survey suggest there is some regularity in mechanisms responsible for the effect of religiosity on democratic support that extend beyond religious denomination.With the resurgence of religion as a political force shaping individual identities and political dynamics, as in the emergence of the Christian right in the United States, the return of British Red Toryism, Sarkozy's defence of France's Christian roots and Berlusconi's efforts to legislate a ban on abortion in Italy, the debate over whether religiosity may be a threat to democratic values has intensified. While some scholars argue that religion is related to prejudice and political intolerance that challenge democratic norms, 1 others stress the importance of religious social networks for the development of civic skills and norms that can have a positive effect on support for democracy. 2 Nonetheless, relatively little research has been dedicated to explaining the complex relationship between religiosity and democratic attitudes, which has been coined 'the