The need to build a good working relationship between the executive and the legislature in both presidential and parliamentary system of government is germane to this study. The paper opines that the agenda of socio-economic and political development, growth and sustainability is contingent on the system of government in operation. The paper attempts to highlight the basic characteristics of both presidential and parliamentary system of government for better appreciation and understanding of the discourse under review. Of particular importance in this study is the fact that a contention about which system of government among the two is best is to beg the question. The centrality of the argument however tilts towards partiamentarism, which the author has practically refuted as being mundane and baseless. The argument here is that the workings of a system is not a function of the coloration of the system in operation; but the general behavioural repertoire of political actors in positions of authority. The political entity could therefore work well or marred depending on the parametres of rulership idiosyncrasies in place at any point in time. The paper ends up with concluding remarks and suggestions for effectice future governance in Nigeria.