is a constituency of the

House of Representatives House of Representatives is the name of legislative bodies in many countries and sub-national entitles. In many countries, the House of Representatives is the lower house of a bicameral legislature, with the corresponding upper house often c ...

in the

Diet of Japan The is the national legislature of Japan. It is composed of a lower house, called the House of Representatives (, ''Shūgiin''), and an upper house, the House of Councillors (, '' Sangiin''). Both houses are directly elected under a paralle ...

. It is located in

Western Tokyo Western Tokyo, also known as the , or , in the Tokyo Metropolis consists of 30 ordinary municipalities (Cities of Japan, cities (市 shi), Towns of Japan, towns (町 machi) and one Villages of Japan, village (村 mura)), unlike the eastern part ...

and consists of the cities of Musashino,

Koganei is a city located in the western portion of Tokyo, Japan. , the city had an estimated population of 123,698 in 61,832 households. The total area of the city is so the population density is about 11,000 persons per km². Geography Koganei appro ...

and Fuchū. Until 2002, it included Mitaka (now part of Tokyo 22nd district) instead of Fuchū. As of 2016, 436,338 eligible voters were registered in the district. Before the electoral reform of 1994, the area had been part of

Tokyo 7th district Tokyo 7th district is a constituency of the House of Representatives in the Diet of Japan. The district is in central Tokyo City and encompasses the entire Shibuya ward, parts of Nakano, Shinagawa and Meguro wards as well as a small part of Su ...

, where four representatives were elected by

Single non-transferable vote Single non-transferable vote or SNTV is an electoral system used to elect multiple winners. It is a generalization of first-past-the-post, applied to multi-member districts with each voter casting just one vote. Unlike FPTP, which is a single-winn ...

(SNTV). From its creation to 2012, the district was represented by former

Prime Minister A prime minister, premier or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister is not ...

and popular

Democratic Party Democratic Party most often refers to: *Democratic Party (United States) Democratic Party and similar terms may also refer to: Active parties Africa *Botswana Democratic Party *Democratic Party of Equatorial Guinea *Gabonese Democratic Party *Demo ...

co-founder

Naoto Kan is a Japanese politician who was Prime Minister of Japan and President of the Democratic Party of Japan (DPJ) from June 2010 to September 2011. Kan was the first Prime Minister since the resignation of Junichiro Koizumi in 2006 to serve for m ...

. In the election of 2005 it was the only constituency the opposition could defend in Tokyo against the landslide for

Junichiro Koizumi Junichiro Koizumi (; , ''Koizumi Jun'ichirō'' ; born 8 January 1942) is a former Japanese politician who was Prime Minister of Japan and President of the Liberal Democratic Party (LDP) from 2001 to 2006. He retired from politics in 2009. He is ...

's ruling coalition. In 2003, then party chairman Kan beat former Minister of Labour

Kunio Hatoyama was a Japanese politician who served as Minister of Internal Affairs and Communications under Prime Ministers Shinzō Abe and Yasuo Fukuda until 12 June 2009. Biography Kunio Hatoyama was born in Tokyo in 1948. He was a son of Yasuko Hatoyam ...

, the younger brother of Democratic Party leader

Yukio Hatoyama is a former Japanese politician who served as Prime Minister of Japan from 16 September 2009 to 8 June 2010. He was the first Prime Minister from the modern Democratic Party of Japan. First elected to the House of Representatives in 1986, Hatoy ...

by a margin of more than 50,000 votes. In the election of 2009,

Masatada Tsuchiya is a former Japanese lawmaker from the Liberal Democratic Party who lost his single member district seat in the House of Representatives to Constitutional Democratic Party of Japan member Kan Naoto in the October 2017 general election by 1,0 ...

was the candidate for the ruling LDP. Tsuchiya who failed to unseat Kan in 2005 was a representative for the Tokyo proportional representation block where he ranked second on the LDP's list 2005. In 2009 he failed to secure reelection in the Tokyo block. Kan was elected president of the then ruling Democratic Party again in 2010 shortly before the 2010 House of Councillors election; but his cabinet resigned after only 15 months. In the 2012 House of Representatives election, Kan lost Tokyo 18th district to Masatada Tsuchiya by more than 10,000 votes; ranking third on the Democratic proportional list in Tokyo (''

sekihairitsu The is a method used in the proportional representation (PR) constituencies ("blocks") for the Japanese House of Representatives of Japan, House of Representatives to determine the order of candidates placed on the same list position by their party ...

'' 87.9%), he gained the last of the three Democratic seats in the Tokyo proportional block behind

Banri Kaieda is a Japanese politician who has served as the Vice Speaker of the House of Representatives of Japan since 2021. A member of the House of Representatives of Japan, he also served as the President of the Democratic Party of Japan between 2012 ...

and

Jin Matsubara is a Japanese politician. He is a member of the House of Representatives in the Diet (national legislature). He was appointed Chairman of the National Public Safety Commission, Minister of State for Consumer Affairs and Food Safety and Minis ...

. Kan joined the Constitutional Democratic Party of Japan before the 2017 general election and regained the seat. Tsuchiya lost his seat even with his high ''sekihairitsu'' as he did not run for the proportional block. In 2021 Kan was challenged by a former DPJ lawmaker,

Akihisa Nagashima is a member of the House of Representatives of Japan as well as a visiting professor at Chuo University's Graduate School of Public Studies. He served as the Parliamentary Vice Minister of Defense in the Kan Cabinet. From 1993 to 1995, he was ...

, who had joined the LDP. Kan managed to hold his seat in a tight race that received national attention.

List of representatives

Election results

References

{{coord missing, Tokyo Districts of the House of Representatives (Japan) Politics of Tokyo