The National Democratic Party was a

political party A political party is an organization that coordinates candidates to compete in a particular country's elections. It is common for the members of a party to hold similar ideas about politics, and parties may promote specific political ideology ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

, led by Miyazaki Ryusuke. Miyazaki broke away from the

Social Democratic Party The name Social Democratic Party or Social Democrats has been used by many political parties in various countries around the world. Such parties are most commonly aligned to social democracy as their political ideology. Active parties Fo ...

in 1929, after having drifted towards conservative positions. The party contested the 1930 elections, with Miyzaki unsuccessfully running in the Fourth district. After the 1930 election the party merged with the

Japan Masses Party The Japan Masses Party (, ''Nihon Taishūtō'') was a proletarian political party in Japan. History The Japan Masses Party was established in December 1928 by a merger of the Japan Labour-Farmer Party The was a socialist political party i ...

, the

Tokyo Proletarian Party Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, with an estimated 37.468 ...

and ten local parties, forming the

National Masses Party National may refer to: Common uses * Nation or country ** Nationality – a ''national'' is a person who is subject to a nation, regardless of whether the person has full rights as a citizen Places in the United States * National, Maryland, c ...

.Beckmann, George M., and Genji Okubo.
The Japanese Communist Party 1922-1945
'. Stanford, Calif: Stanford University Press, 1969. p. 221

References

{{Japanese Empire political parties Defunct political parties in Japan Political parties established in 1929 Political parties disestablished in 1930