The Constitutionalist Party of Japan (リッケントウ; 立憲黨 Rikkentō) is a Japanese political party founded in 1920. The Constitutionalist Party is part of the National Front with the Nationalist Party of Japan since its formation. Although always gained a second highest number of seats in the elections of National Congress and State Council since 1947, the Constitutionalists considered by many is only a loyal and subordinate party for the stronger Nationalist Party rather than playing a part as an effective opposition party.