The main inquiry of this article is to find out what factors have been influential in the stability or instability of political coalitions during the era of Islamic republic of Iran. In a general study of socio-political developments in the era of Islamic republic of Iran, a kind of instability isgenerally witnessed in the relations and interactions among the political elites, activists, groups and associations. Instabilities during the first decade after revolution can be analyzed based on conditions such as the fledgling revolutionary society as well as the imposed war. However during the second and third decade conditions changed. During these decades coalitions formed among the revolutionary and Islamist groups ruptures giving birth to new groupings and coalitions with new characteristics.
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