Abstract: According to the specific political characteristics of each country in its development process in ten fields including the composition of the cabinet, the political party system, the electoral system, the conditions for constitutional amendments and the independence of the central bank, Western academia?has identified two camps of states with political systems: the “majority democracy model” and the “consensus democracy model”. The quantification shows that the calculation indicators for each political characteristic of Japan do not correspond to the the typical characteristics of majority democracy or consensus democracy, but lie at critical levels. In other words, Japan is neither a majority democracy nor a consensus democracy, and the impact of each political feature of a particular model on the type of cabinet cannot be directly transposed to analyse the current situation in Japan.However, even if there are deviations from the ideal, the impact of the characteristics of the classification criteria of the democratic model on a countrys political reality is universal, and the relevance of the characteristics is also universally applicable in both majority and consensus democracies. So how will these political characteristics and their correlations to each other influence the type of cabinet in Japan? This paper will first discuss theories related to the Western model of democracy and clarify the quantitative criteria for each political characteristic. On this basis, the correlation between political characteristics and cabinet types in Japan is specifically examined, as well as the ability of political characteristics as an independent variable to explain changes in cabinet types. Finally, the paper supplements other potential influencing factors of cabinet type in the economic and social spheres.

Key words: Japan, political characteristic, LDP-CGP coalition cabinet, correlation analysis, regression analysis