List of political parties in Japan - AbsoluteAstronomy.com

Major parties

Party	Diet Representation		Party Chairman	Comments
Party	Representatives House of Representatives of Japan The is the lower house of the Diet of Japan. The House of Councillors of Japan is the upper house.The House of Representatives has 480 members, elected for a four-year term. Of these, 180 members are elected from 11 multi-member constituencies by a party-list system of proportional representation,...	Councillors House of Councillors The is the upper house of the Diet of Japan. The House of Representatives is the lower house. The House of Councillors is the successor to the pre-war House of Peers. If the two houses disagree on matters of the budget, treaties, or designation of the prime minister, the House of Representatives...	Party Chairman	Comments
Democratic Party Democratic Party of Japan The is a political party in Japan founded in 1998 by the merger of several opposition parties. Its socially liberal platform is generally considered center-left in the Japanese political spectrum... (DPJ) Minshu-tō 民主党	306	106	Yoshihiko Noda Yoshihiko Noda is the current Prime Minister of Japan, a member of the Democratic Party of Japan , and a member of the House of Representatives in the Diet... PM Prime Minister of Japan The is the head of government of Japan. He is appointed by the Emperor of Japan after being designated by the Diet from among its members, and must enjoy the confidence of the House of Representatives to remain in office... Reps.	The DPJ is Japan's largest party. It was formed in the late 1990s as a result of the merger of several anti-LDP parties. Its membership covers a broad spectrum of political beliefs, but it is generally perceived as a center-left party.
Liberal Democratic Party Liberal Democratic Party (Japan) The , frequently abbreviated to LDP or , is a centre-right political party in Japan. It is one of the most consistently successful political parties in the democratic world. The LDP ruled almost continuously for nearly 54 years from its founding in 1955 until its defeat in the 2009 election... (LDP) Jiyū Minshu-tō 自由民主党, or Jimin-tō 自民党	116	84	Sadakazu Tanigaki Sadakazu Tanigaki is a conservative Japanese politician who served as Minister of Finance from 2003 to 2006, in the cabinet of Jun'ichirō Koizumi. He also served as Minister of Construction and Transport in the cabinet of Yasuo Fukuda and is serving his ninth term as a member of the House of Representatives,... Reps.	The LDP is Japan's second largest political party. It is a conservative Conservatism Conservatism is a political and social philosophy that promotes the maintenance of traditional institutions and supports, at the most, minimal and gradual change in society. Some conservatives seek to preserve things as they are, emphasizing stability and continuity, while others oppose modernism... party and is made up of various conservative and centrist factions. Before 2009, the LDP had been in power almost continuously since 1955, when it was formed as a merger of early postwar Japan's two conservative parties, the Liberal Party of Japan, Occupation Liberal Party (1945) was a right-wing party in Japan, founded on November 9, 1945, mainly by former members of Seiyukai Party. Its first leader was Ichirō Hatoyama. In 1946-1947 and 1948-1954, the next party leader Shigeru Yoshida was the Prime Minister.... , and the Democrat Party of Japan, Occupation Japan Democratic Party (1954) Japan Democratic Party was a short-living right-wing political party in Japan 1954–1955, led by Ichirō Hatoyama. Its leaders included former foreign minister Mamoru Shigemitsu and future Prime Minister Nobusuke Kishi. The party was formed on November 24, 1954, by merging Ichiro Hatoyama's group... .

Third parties

Party	Diet Representation		Party Chairman	Comments
Party	Representatives House of Representatives of Japan The is the lower house of the Diet of Japan. The House of Councillors of Japan is the upper house.The House of Representatives has 480 members, elected for a four-year term. Of these, 180 members are elected from 11 multi-member constituencies by a party-list system of proportional representation,...	Councillors House of Councillors The is the upper house of the Diet of Japan. The House of Representatives is the lower house. The House of Councillors is the successor to the pre-war House of Peers. If the two houses disagree on matters of the budget, treaties, or designation of the prime minister, the House of Representatives...	Party Chairman	Comments
New Komeito (NKP) Kōmeitō 公明党	21	19	Natsuo Yamaguchi Natsuo Yamaguchi is a Japanese politician of the New Komeito Party, a member of the House of Councillors in the Diet . A native of Nakaminato, Ibaraki and graduate of the University of Tokyo, he was elected to the House of Representatives for the first time in 1990. After losing his seat in 1996, he ran... Coun.	The Shin Komeito Party is Japan's third largest party. It was formerly known as the Clean Government Political Assembly Clean Government Political Assembly The Clean Government Political Assembly ' - otherwise known as the Komei Political Assembly, was a political organization in Japan from 1961 to 1964. It was the forerunner of the Komeitō , which in 1998 merged into the New Komeito Party.... and the Komeito Komeito (Former) The Kōmeitō , also known as Clean Government Party or CGP, was a political party in Japan. It was centrist, sometimes also classified as centre-left.- History :... . At its foundation, the party was center-left, but it has trended rightwards as a participant in the LDP's governing coalitions. It is supported by the Buddhist new religious movement New religious movement A new religious movement is a religious community or ethical, spiritual, or philosophical group of modern origin, which has a peripheral place within the dominant religious culture. NRMs may be novel in origin or they may be part of a wider religion, such as Christianity, Hinduism or Buddhism, in... Sōka Gakkai.
Your Party Your Party is a center-right Japanese political party. Led by Yoshimi Watanabe, who split from the Liberal Democratic Party , the party was founded on August 8, 2009 after then-Prime Minister Aso dissolved the lower house. A concept behind the party is to make the government more democratic, and to eliminate... (YP) Minna no Tō みんなの党	5	11	Yoshimi Watanabe Yoshimi Watanabe is a Japanese politician, formerly of the Liberal Democratic Party and currently of the President of Your Party, a member of the House of Representatives in the Diet... Reps.	Centrism Centrism In politics, centrism is the ideal or the practice of promoting policies that lie different from the standard political left and political right. Most commonly, this is visualized as part of the one-dimensional political spectrum of left-right politics, with centrism landing in the middle between... , Conservative liberalism Conservative liberalism Conservative liberalism is a variant of liberalism, combining liberal values and policies with conservative stances, or, more simply, representing the right-wing of the liberal movement.... , Economic liberalism Economic liberalism Economic liberalism is the ideological belief in giving all people economic freedom, and as such granting people with more basis to control their own lives and make their own mistakes. It is an economic philosophy that supports and promotes individual liberty and choice in economic matters and...
Communist Party Japanese Communist Party The Japanese Communist Party is a left-wing political party in Japan.The JCP advocates the establishment of a society based on socialism, democracy and peace, and opposition to militarism... (JCP) Nihon Kyōsan-tō 日本共産党, or Kyōsan-tō 共産党	9	6	Kazuo Shii Kazuo Shii is a Japanese politician and chairman of the Japanese Communist Party .- Early life :Shii was born in Yotsukaido, Chiba Prefecture. He graduated from the Department of Physical Engineering at Tokyo University... Reps.	The Japanese Communist Party is Japan's fourth largest party. It is a communist party of the left-wing.
Social Democratic Party Social Democratic Party (Japan) The Social Democratic Party The Social Democratic Party The Social Democratic Party (社会民主党 Shakai Minshu-tō, often abbreviated to 社民党 Shamin-tō; also known as the Social Democratic Party of Japan (abbreviated to SDPJ or SDP in English) is a political party that advocates for the establishment of a... (SDP) Shakai Minshu-tō 社会民主党, or Shamin-tō 社民党	6	4	Mizuho Fukushima Mizuho Fukushima is a Japanese politician. She has been a member of the House of Councillors since 1998, was re-elected in 2004 and 2010,and is the current chair of the Social Democratic Party of Japan, a position she has held since 2003.... Coun.	SDP is a leftist political party. It is a successor of Japan Socialist Party, which had been Japan's largest opposition party in the 1955 System 1955 System The was the political system that arose in Japan from 1955 to 1993.-History:After World War II, in November 1945, the major prewar conservative, moderate, and progressives had reorganized and the Japanese Communist Party had been legalized. A cabinet under the parliamentary form of government was... .
People's New Party People's New Party The People's New Party is a centre-right, Conservative, Japanese political party formed on 17 August 2005 in the aftermath of the defeat of Prime Minister Junichiro Koizumi's Japan Post privatisation bills which led to a snap election.-History:The Kokumin Shinto, headed by Shizuka Kamei, includes... (PNP) Kokumin Shintō 国民新党, or Kokumin-tō 国民党	3	3	Shizuka Kamei Shizuka Kamei is a Japanese politician.-Early life:He was born in the city of Shōbara in Hiroshima Prefecture into a poor family. He studied at the department of economics at University of Tokyo and worked his way through school through various jobs, including singing at a cabaret.Upon graduation in 1960, he... Reps.	Conservatism Conservatism Conservatism is a political and social philosophy that promotes the maintenance of traditional institutions and supports, at the most, minimal and gradual change in society. Some conservatives seek to preserve things as they are, emphasizing stability and continuity, while others oppose modernism... , Anti-Postal Privatization Japan Post was a government-owned corporation in Japan, that existed from 2003–2007, offering postal and package delivery services, banking services, and life insurance. It had over 400,000 employees and ran 24,700 post offices throughout Japan and was the nation's largest employer. One third of all Japanese...
Sunrise Party Sunrise Party of Japan The is a Japanese political party. The political party is formed by five Japanese lawmakers and parliamentarians, four former members of the Liberal Democratic Party and an independent politician. It was named by the veteran Tokyo Metropolitan Governor Shintarō Ishihara who supported the... (SPJ) Tachiagare Nippon たちあがれ日本	3	3	Takeo Hiranuma Takeo Hiranuma Takeo Hiranuma is a Japanese politician. He advocates historical revisionism regarding the Nanking Massacre.- Basic biography :... Reps.	National conservatism National conservatism National conservatism is a political term used primarily in Europe to describe a variant of conservatism which concentrates more on national interests than standard conservatism as well as upholding cultural and ethnic identity, while not being outspokenly nationalist or supporting a far-right... , Social conservatism Social conservatism Social Conservatism is primarily a political, and usually morally influenced, ideology that focuses on the preservation of what are seen as traditional values. Social conservatism is a form of authoritarianism often associated with the position that the federal government should have a greater role... , Japanese nationalism Japanese nationalism encompasses a broad range of ideas and sentiments harbored by the Japanese people over the last two centuries regarding their native country, its cultural nature, political form and historical destiny... , Right wing
New Renaissance Party New Renaissance Party The is a minor political party in Japan founded in 2010. Its leader is Yōichi Masuzoe a former Minister of Health, Labour and Welfare and former member of Liberal Democratic Party.-External links:... (NRP) Shintō Kaikaku* 新党改革	0	2	Yōichi Masuzoe Yoichi Masuzoe is a Japanese politician and a member of the House of Councillors who was Minister of Health, Labour and Welfare from 2007 to 2009. He is also a well-known face on Japanese TV shows.- Career :... Coun.	Conservatism Conservatism Conservatism is a political and social philosophy that promotes the maintenance of traditional institutions and supports, at the most, minimal and gradual change in society. Some conservatives seek to preserve things as they are, emphasizing stability and continuity, while others oppose modernism... , Neoliberalism Neoliberalism Neoliberalism is a market-driven approach to economic and social policy based on neoclassical theories of economics that emphasizes the efficiency of private enterprise, liberalized trade and relatively open markets, and therefore seeks to maximize the role of the private sector in determining the...

Existing national parties currently represented in the Diet

Dissidents from the LDP formed the following parties in 2005:
- New Party Nippon
  New Party Nippon
  The New Party Nippon is a Japanese political party formed on August 21, 2005. The party is headed by the former Nagano governor Yasuo Tanaka, and includes Diet members Kōki Kobayashi , Takashi Aoyama, Makoto Taki, and Hiroyuki Arai, who left the Liberal Democratic Party in opposition to Prime...
  
  (NPN) Shintō Nippon (centrist, 2005–)
- New Party Daichi
  New Party Daichi
  New Party Daichi is a political party formed on August 18, 2005. The party is headed by former Liberal Democratic Party member Muneo Suzuki. Suzuki resigned from the LDP in June 2002 after being arrested on suspicion of accepting bribes...
  
  (NPD) Shintō Daichi (Hokkaidō
  Hokkaido
  , formerly known as Ezo, Yezo, Yeso, or Yesso, is Japan's second largest island; it is also the largest and northernmost of Japan's 47 prefectural-level subdivisions. The Tsugaru Strait separates Hokkaido from Honshu, although the two islands are connected by the underwater railway Seikan Tunnel...
  
  , conservative, 2005–)
- Political Group of Okinawa Revolution
  Political Group of Okinawa Revolution
  The is a local political party in Okinawa, Japan. Seitō means "political party", while sōzō may mean or . Contrary to what its official English name might suggest, the party is considered as largely conservative....
  
  Seitō Sōzō (Okinawa
  Okinawa Prefecture
  is one of Japan's southern prefectures. It consists of hundreds of the Ryukyu Islands in a chain over long, which extends southwest from Kyūshū to Taiwan. Okinawa's capital, Naha, is located in the southern part of Okinawa Island...
  
  , conservative, 2005–)
Japan Renaissance Party Kaikaku Club 改革クラブ (conservative
Conservatism
Conservatism is a political and social philosophy that promotes the maintenance of traditional institutions and supports, at the most, minimal and gradual change in society. Some conservatives seek to preserve things as they are, emphasizing stability and continuity, while others oppose modernism...

, 2008–)
Sunrise Party of Japan
Sunrise Party of Japan
The is a Japanese political party. The political party is formed by five Japanese lawmakers and parliamentarians, four former members of the Liberal Democratic Party and an independent politician. It was named by the veteran Tokyo Metropolitan Governor Shintarō Ishihara who supported the...

(National conservatism
National conservatism
National conservatism is a political term used primarily in Europe to describe a variant of conservatism which concentrates more on national interests than standard conservatism as well as upholding cultural and ethnic identity, while not being outspokenly nationalist or supporting a far-right...

, led by Takeo Hiranuma
Takeo Hiranuma
Takeo Hiranuma is a Japanese politician. He advocates historical revisionism regarding the Nanking Massacre.- Basic biography :...

, 2010-)
Okinawa Social Mass Party
Okinawa Socialist Masses Party
is a local political party in Okinawa, Japan. The party's name is abbreviated as or . The party primary adheres to social liberalism.-History:The party was founded on October 31, 1950 during the US occupation of the region...

Okinawa Shakai Taishū Tō (Okinawa, social liberalism, progressivism, 1950–)
- The party is largely regional, but has 1 seat in the National Diet as well.

Existing national parties represented in the Diet in the past

Current political parties that used to be in the Diet but are not currently represented:

Rikken Yōseikai (far right
Far right
Far-right, extreme right, hard right, radical right, and ultra-right are terms used to discuss the qualitative or quantitative position a group or person occupies within right-wing politics. Far-right politics may involve anti-immigration and anti-integration stances towards groups that are...

, 1923–1942, 1946–)
Dainiin Club
Dainiin Club
The Dainiin Club is a political party in the Upper House of Japan.The word "Dainiin" means the House of Councillors ....

Dainiin Kurabu (centrist, 1983–)
New Party for Salaried Men Sararīman Shintō (centrist, 1983–)
Liberal League Jiyū Rengō (libertarian, 1994–)
New Socialist Party
New Socialist Party (Japan)
The was a left-wing party created in Japan on March 3, 1996, by a group of left wingers who left the Social Democratic Party.The party has some similarities to the Japanese Communist Party. It is able to assert its left-wing views democratically, unlike other hard-line atheist-orientated,...

Shin Shakai Tō (socialist, 1996–)
Sports and Peace Party
Sports and Peace Party
The Sports and Peace Party was a political party run by Antonio Inoki, a pro wrestler and former member of the House of Councillors. He continued to wrestle and promote while serving as a legislator. The party fielded 10 candidates in the 1989 election. Inoki met with Saddam Hussein for the...

Supōtsu Heiwa Tō (centrist, 1989–)
Takeru (centrist, 2001–)

Other parties

Japan has other minor parties not represented in Parliament (which have never been represented before), some are new, others with communist and socialist ideologies, as well as a few nationalist, reformist, and far right-wing parties. Some of them include:

Happiness Realization Party
Happiness Realization Party
, abbreviated as 幸福, is a Japanese political party founded by Ryuho Okawa on 23 May 2009 "in order to offer the Japanese people a third option" for the upcoming elections in August 2009. The HRP is the political wing of the Happy Science religious movement....

(Founded in May 2009 Happy Science)
Ishin Seitō Shimpū
Ishin Seito Shimpu
The is a small right Japanese nationalist party. It is now represented by a new leader called Hisayoshi. The ideas they promote include using the armed forces to defend Japan and the promotion of the Japanese emperor as someone that is higher than any other authority.However it also invited to one...

(far right, 1995–)
Internet Breakthrough Party of Japan
Internet Breakthrough Party of Japan
The was a one-member party run by , an Iron Chef judge and former member of the House of Representatives.-External links:* *...

(led by Iron Chef Commentator and Judge and former LDP member Shinichirō Kurimoto)
Japan Greens
Japan Greens
The is a political organization which aims to form a Green Party in Japan. It has 592 members as of 25 August 2007, when it was called . After the electoral success of Green activist Ryuhei Kawada in the 2007 House of Councillors election, the local green political network Rainbow and Greens has...

(green)
Japan Nation Party
Japan Nation Party
The is a minor nationalist party in Japan that was founded in 1988. , it is not represented in either chamber of the Diet of Japan.-Political ideology:...

(nationalist 1988–)
Japan Revolutionary Communist League
Japan Revolutionary Communist League
The Japan Revolutionary Communist League is a Trotskyist group in Japan....

(Trotskyist, 1957–)
Japan Revolutionary Communist League, National Committee (Middle Core Faction)
Japan Revolutionary Communist League, National Committee (Middle Core Faction)
was the most powerful Japanese far-left revolutionary group, often referred to as Chūkaku-ha . However, in the most recent periods, the league has lost a significant amount of support due to a lack of interest and support in 'left-wing' policies across Japan as a whole.-Origin:Chūkaku-ha traces its...

(far left, 1963–)
Japan Revolutionary Communist League (Revolutionary Marxist Faction)
Japan Revolutionary Communist League (Revolutionary Marxist Faction)
The Japan Revolutionary Communist League is a Japanese Trotskyist revolutionary group, often referred to as Kakumaru-ha.The group's origins lie in splits from the Japanese Communist Party following the Hungarian Revolution of 1956...

(Trotskyist, 1963–)
Rainbow and Greens
Rainbow and Greens
Rainbow and Greens , was a Green political organization in Japan from 1998–2008. It was a nationwide network of prefectural assembly members, usually running on local platforms variously named as "living citizen network", "living club", "living cooperative" or the Rainbow and Greens 500-Member List...

Niji to Midori (green)
Women's Party (Japan) Josei Tō (Feminist, 1993–)

Regional parties

Some of the main regional parties represented in regional assemblies:

Kanagawa Network Movement Kanagawa Nettowāku Undō (Kanagawa
Kanagawa Prefecture
is a prefecture located in the southern Kantō region of Japan. The capital is Yokohama. Kanagawa is part of the Greater Tokyo Area.-History:The prefecture has some archaeological sites going back to the Jōmon period...

, socialist)
Tokyo Seikatsusha Network
Tokyo Seikatsusha Network
The Tokyo Seikatsusha Network is a local Japanese political party affiliated with Tokyo Seikatsu Club, a consumer's cooperative. It is generally moderate left, and tends to appeal to the same voters as the Social Democratic Party of Japan and Democratic Party of Japan.-External links:*...

Tōkyō Seikatsusha Nettowāku (Tokyo
Tokyo
, ; officially , is one of the 47 prefectures of Japan. Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area of Japan. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family...

, socialist)
Green Niigata, Midori Niigata (Niigata
Niigata Prefecture
is a prefecture of Japan located on the island of Honshū on the coast of the Sea of Japan. The capital is the city of Niigata. The name "Niigata" literally means "new lagoon".- History :...

, communist)
- formerly Niigata New Party for People, Shimin Shin-tō Niigata (Niigata, communist)
Kariyushi Club
Kariyushi Club
, formerly called , is the local party in Okinawa Prefecture, Japan, seeking an independent Ryukyu, the . The current party leader is . Kariyushi is Okinawan for "happy" or "harmony with nature".-History:...

Kariyushi Kurabu (Okinawa, independentist)
New Party Daichi
New Party Daichi
New Party Daichi is a political party formed on August 18, 2005. The party is headed by former Liberal Democratic Party member Muneo Suzuki. Suzuki resigned from the LDP in June 2002 after being arrested on suspicion of accepting bribes...

, Political Group of Okinawa Revolution
Political Group of Okinawa Revolution
The is a local political party in Okinawa, Japan. Seitō means "political party", while sōzō may mean or . Contrary to what its official English name might suggest, the party is considered as largely conservative....

, Osaka Restoration Association
Osaka Restoration Association
The is a Japanese political party in Osaka Prefecture founded in 2010 by former TV personality and then-Governor Tōru Hashmoto to materilize for "One Osaka" and reduce affiliated organizations of Osaka Prefecture and the city of Osaka....

and Okinawa Social Mass Party
Okinawa Socialist Masses Party
is a local political party in Okinawa, Japan. The party's name is abbreviated as or . The party primary adheres to social liberalism.-History:The party was founded on October 31, 1950 during the US occupation of the region...

are considered largely regional, although they have seats in the National Diet.

Defunct parties

Association of Independents Mushozoku no Kai (centrist, 1999–2004)
- formerly House of Representatives Club Sangiin Kurabu (centrist, 1998–1999)
New Conservative Party
New Conservative Party
The New Conservative Party is a now-defunct political party in Japan originally led by Hiroshi Kumagai. Kumagai and 3 other disgruntled Democratic Party of Japan members defected in December 2002 and merged with the Conservative Party of Japan , forming the New Conservative Party...

(conservative, 2002–2003)
- formerly Conservative Party of Japan (2000) (conservative, 2000–2002)
Liberal Party (1998) (liberal, 1998–2003)
Democratic Party of Japan (1996) (liberal, 1996–1998)
Good Governance Party
Good Governance Party
The was a Japanese political party which was in existence for a short period in early 1998. It was a centrist, reformist party that merged with other parties in April 1998 to form the Democratic Party of Japan....

(liberal, 1998)
New Fraternity Party
New Fraternity Party
The was a Japanese political party that existed in early 1998. It was founded by Diet members that broke away from the New Frontier Party in January 1998. It was a liberal party espousing various left of centre causes....

(liberal reformist, 1998)
Sun Party
Sun Party
The Sun Party was a Japanese political party which existed from 1996 to 1998. It was a liberal reformist party that was opposed to the ruling coalition led by the Liberal Democratic Party ....

(liberal reformist, 1996–1998)
Democratic Reform Party
Democratic Reform Party
Democratic Reform Party may mean:* Partido ng Demokratikong Reporma – Lapiang Manggagawa, a Philippines political party* A former Japanese political party, see Liberalism in Japan* Party for Democratic Reforms , an Azerbaijani political party...

(liberal reformist, 1993–1998)
Midori no Kaigi Environmental Green Political Assembly (ecologist conservative
Conservatism
Conservatism is a political and social philosophy that promotes the maintenance of traditional institutions and supports, at the most, minimal and gradual change in society. Some conservatives seek to preserve things as they are, emphasizing stability and continuity, while others oppose modernism...

reformist, 2002–2004)
- formerlyThe Sakigake Party (centrist reformist-ecologist, 1998–2002)
- formerly New Party Sakigake
  New Party Sakigake
  The New Party Sakigake was a Japanese political party that broke away from the Liberal Democratic Party on June 22, 1993. The party was created by Masayoshi Takemura. The party, was a centrist party, and it had many reformist and even moderate ecological elements. The theoretical reader was...
  
  (centrist reformist-ecologist, 1993–1998)
New Peace Party (conservative, 1997–1998)
Japan New Party
Japan New Party
The Japan New Party was a Japanese political party that existed briefly from 1992 to 1994. It should not be confused with the New Party Nippon founded in 2005....

(liberal, 1993–1996)
Japan Renewal Party
Japan Renewal Party
The Japan Renewal Party was a Japanese political party that existed in the early 1990s. It was founded in 1993 by 44 members of the Liberal Democratic Party led by Tsutomu Hata and Ichirō Ozawa...

(liberal, 1993–1994)
New Frontier Party
New Frontier Party
The was a Japanese political party that existed during the mid-1990s. As a merger of several small parties, the party was ideologically diverse, with its membership ranging from moderate socialists to neoliberals and conservatives...

(socialist/liberal, 1994–1997)
Democratic Socialist Party (Japan)
Democratic Socialist Party (Japan)
The was a social democratic party in Japan.- History :The Democratic Socialist Party was established in 1960 by a breakaway group of the Japan Socialist Party. It was made up of many members of the former Rightist Socialist Party of Japan, a moderate social-democratic faction that existed...

(social-democratic, 1960–1994—broke off from JSP)
Democratic Party
Democratic Party (1947)
Democratic Party was a right-wing political party in Japan. It was founded in spring 1947 by merging the Progressive Party of Inukai Takeru with a faction of Liberal Party led by Hitoshi Ashida and obtained 124 seats in 1947 elections. The party had held seven seats in Tetsu Katayama's government...

(agrarian conservative
Agrarianism
Agrarianism has two common meanings. The first meaning refers to a social philosophy or political philosophy which values rural society as superior to urban society, the independent farmer as superior to the paid worker, and sees farming as a way of life that can shape the ideal social values...

, 1947–1950)
Liberal Party
Liberal Party (1945)
was a right-wing party in Japan, founded on November 9, 1945, mainly by former members of Seiyukai Party. Its first leader was Ichirō Hatoyama. In 1946-1947 and 1948-1954, the next party leader Shigeru Yoshida was the Prime Minister....

(conservative, 1945–1955)
Great Achievement Association (conservative nationalist, 1889–1909)
- formerly Conservative Party of Japan (1880)
Constitutional Liberal Party (Japan) (liberal, 1882–1931)
Constitutional Progressive Party (moderate liberal, 1882–1934)
Liberal Party of Japan (1881)
Liberal Party of Japan (1881)
The is the name of several liberal political parties in the history of Japan, two of which existed in the Empire of Japan prior to 1945.-Liberal Party of 1881:...

(liberal, 1881)
- formerly Aikokusha
  Aikoku Koto
  The ' was a political party in Meiji period Japan.The Aikoku Kōtō was formed in January 1874 by Itagaki Taisuke, Etō Shimpei, Gotō Shōjirō and others as part of the Freedom and People's Rights Movement. Its purpose was to petition the Meiji government to establish a national assembly...
  
  (liberal, 1872–1881)