This paper examines whether the phenomenon of religion can be a determining dynamic in the emergence of the dominant-party system. To explain this, I take hand Turkey and Russia, which have been governed by a dominant party for more than 20 years. Accordingly, I analyze the importance of religion from the standpoint of the electorate of these two countries since the dominant parties emerge based on voter preferences. The findings of this study reveal that religion can be very effective in creating a dominant party in non-secularised countries such as Turkey. However, when the case of Russia is considered, it demonstrates that religious phenomenon remains the emergence of the dominant-party system remains far from being a determinant and generalizable dynamic.