Abstract
In this article we identify the factors that contribute to the formation and especially the durability/stability of governments in both Slovenia and Montenegro after they formally introduced multiparty systems and following their democratic transition, with a focus on the effect of cleavages and party system characteristics generally. Although these two polities share several important similarities (small size, common institutional setting during Yugoslav era, aspirations for membership in international organisations etc.), the nature of governments’ durability/stability in the democratic era entails distinct differences. While Montenegro stands out in post-socialist Europe as the only case where the ruling party has not been overthrown, Slovenia has been led by many governments composed of different political parties. While it seems that in neither country are the ideological characteristics of the governments able to explain their duration/stability to any important extent, it is obvious that the cleavage structure in the two countries has varied, as has the importance of particular cleavages.