The Japanese party system, according to assumptions of Giovanni Sartori’s classification, should be considered as the predominant-party system. Liberal Democratic Party is occupying a dominant position in this system. The LDP has been in power since 1955, except for a brief period in 1993 and 2009, when the party was deprived of power because of electoral defeats. In remaining elections, the party has been achieving victories and thanks to that the LDP gained an absolute majority in the parliament and could self-govern. The LDP should be considered as a conservative political power, realizing the neoliberal program in the economy. Among the reasons for the dominance of the party, particular attention should be paid to the fact that it bases on the rural electorate and that the electoral system works to its advantage