Political participation plays a critical role in establishment, preservation, and perpetuation of democracy. In this regard, a lot of research have been conducted to address factors contributing to the political participation in Iran. In this study, we present a critical meta-analysis of studies on the political participation in Iran. By using a purposive sampling method, 13 papers were selected from among papers published in the last 10 years in local journals. Analysis in three main areas (definition of dependent variable, theoretical foundations, and theoretical framework) showed that the studies suffer from epistemological weakness in all areas. Most of these studies had been conducted micro-level analysis; their Literature Review section had no logical coherence; had no coherent theoretical framework; and there were methodological problems in different parts. The idea of political openness and, consequently, effective participation, as well as the media and membership in associations and organizations were the most important factors in increasing the normal political participation of people (voting behavior), while fatalism and feeling of powerlessness were the factors reducing it.