The study of the party and political system of any country from the standpoint ofelectoral geography is interesting due to the possibility to identify the spatial and temporaldifferentiation of voters ' preferences in elections. This gives the right to assess thecontribution of a particular region or group of regions to the distribution of seats amongparties in Parliament, and also helps to identify those problems of an ethnic, religious orsocio-economic nature that exist in the region or in the country as a whole and need tobe resolved as soon as possible. The Japanese electoral system is less studied than theEuropean or American ones, although it is the oldest in Asia. The current stage of itsformation and development can be counted from 1993, when a major electoral reform tookplace to change the rules for forming the country's Parliament and the system of electoraldistricts, which led to ambiguous consequences and the phenomenon of “small” partiessince the mid-2000s. The authors of this article attempt to study one of the componentsof the electoral system of Japan, the electoral landscape of this country, its features, thedegree ofsupport and dynamics over time of various political parties in the prefectures andregions of the country. On a base of the selected patterns, authors propose their zoning gridfor Japan, which reflects the state of the country's electoral landscape in the period from2000 to the 2020s for the lower house of Parliament under the proportional system.