New Socialist Party - Japan - was created on 1996-03-03.
Japan Farmers Party was created in 1926.
Japan Nation Party was created in 1988.
Japan Proletarian Party was created in 1937.
Japan Innovation Party was created in 2010.
Democratic Socialist Party - Japan - was created in 1960.
Democratic Party of Japan was created on 1998-01-08.
Rightist Socialist Party of Japan was created in 1948.
Sunrise Party of Japan was created on 2010-04-10.
Leftist Socialist Party of Japan was created in 1948.
Social Democratic Party - Japan - was created in 1945.
Japan New Party ended in 1994.