Parliamentarism can be implemented in a few versions: parliamentary-cabinet,cabinet-parliamentary, parliamentary-presidential and parliamentary-committee. It is, thus, an internally diversified system. It is influenced by a number of factors, among others, the type of party system, the way of granting the non-confidence vote and dissolving the parliament, as well as the scope of so called delegated legislation.In contemporary parliamentary democracies aspirations to strengthen executives can be observed.