This article examines the dimensions of party system in the Republic of Moldova, particularly the criteria of analysis of the party system – quantitative criteria, electoral, criteria of relevance, and of polarization. According to these criteria are examined the specific features of consolidation and formation of moldovan party system. A special stress is put on the defining of system as a system of extreme Pluralism, as well as on the instability of party sphere which is polarized according to ideological format and its electoral impact, the stress is also put on the relations of multipolarized assymetry etc.