Tokyo 6th district is a constituency of the House of Representatives in the Diet of Japan. It is located in Tokyo, and consists of major parts of the City of Setagaya, one of Tokyo's 23 special wards. With 2.18 times as many voters as Tokushima's 1st district, it had the lowest electoral weight throughout Japan in the election of 2005. In 2007 the Supreme Court dismissed a claim that the election in this and other Tokyo districts was unconstitutional and thus invalid. As of September 2012, 486,353 eligible voters were registered in the district, giving them the third lowest electoral weight in the country.
Tokyo 18th District is a constituency of the House of Representatives in the Diet of Japan. It is located in Western Tokyo and consists of the cities of Musashino, Koganei and Fuchū. Until 2002, it included Mitaka instead of Fuchū. As of 2016, 436,338 eligible voters were registered in the district.
Tokyo 9th district was a constituency of the House of Representatives in the Imperial Diet of Japan between 1890 and 1898. It was located in Tokyo and consisted of Tokyo City's Koishikawa, Ushigome and Yotsuya wards.
Tokyo Tokyo city district was a constituency of the House of Representatives in the Imperial Diet of Japan. Between 1902 and 1917 it elected eleven representatives by single non-transferable vote (SNTV). It was located in Tokyo and consisted of Tokyo City. Tokyo city often elected (anti-mainstream) Kenseitō, Kokumintō, Dōshikai and independent politicians while few Seiyūkai politicians managed to be elected among the top five. Exceptions were Hatoyama Kazuo and his son Ichirō who in 1917 managed to achieve top tōsen, i.e. be elected with the highest vote. Other prominent representatives from the city of Tokyo include economist Taguchi Ukichi, Bukichi Miki, Kenseikai secretary-general in the 1920s and co-founder of Hatoyama's postwar Japan Democratic Party in 1954, and Tanomogi Keikichi, Minister of Communication in the 1930s and mayor of Tokyo.
Tokyo 2nd district was a constituency of the House of Representatives in the Imperial Diet of Japan. Between 1928 and 1942 it elected five representatives by single non-transferable vote (SNTV). It was located in Tokyo Prefecture and consisted of Tokyo City's Kanda, Koishikawa, Hongō and Shitaya wards. It was most notably represented by Christian socialist leader Isoo Abe, between 1926 and 1931 chairman of the Socialist Mass Party, and post-war prime minister Ichirō Hatoyama who founded the Liberal Party in 1945, the Japan Democratic Party in 1954 and chaired the Liberal Democratic Party after the "conservative merger" of the two parties in 1955.
Tokyo at-large district is an electoral district of the House of Councillors in the National Diet, the national legislature of Japan. The district was created in 1947 by the new Constitution of Japan and sent 8 members to the House from 1947 until 2007. From 2007 until 2016, this district sent 10 members to the House, and from 2016 onwards, the district has sent 12 councillors to the House, making it by far the largest constituency in the House of Councillors.
The Tokyo 3rd district is a constituency of the House of Representatives in the Diet of Japan. It is located in Tokyo and covers parts of the former city of Tokyo and Tokyo's outlying islands. The district consists of the wards of Shinagawa and parts of Ōta, the towns of Ōshima and Hachijō and the villages of Toshima, Niijima, Kōzushima, Miyake, Mikurajima, Aogashima and Ogasawara. As of 2012, 482,494 eligible voters were registered in the district.
Tokyo 10th district is a constituency of the House of Representatives in the Diet of Japan. As of 2012, 351,821 eligible voters were registered in the district. It covers northwestern parts of the former city of Tokyo. Originally it consisted of the ward of Toshima and parts of Nerima, but after redistricting in 2017 it comprises parts of four wards, Toshima, Nerima, Nakano and Shinjuku.
Tokyo 1st district is a constituency of the House of Representatives in the Diet of Japan. It is located in eastern mainland Tokyo and covers central parts of the former city of Tokyo. The district consists of the wards of Chiyoda, Minato and Shinjuku. As of 2016, 514,974 eligible voters were registered in the district. After redistricting in 2017, a part of Shinjuku was moved to the Tokyo 10th district and a part of Minato was moved to the Tokyo 2nd district.
Tokyo 8th district is a single-member constituency of the House of Representatives in the national Diet of Japan. It is located in western part of former Tokyo City and is almost coterminous with Suginami Ward. The district was created in 1994 as part of an electoral reform effort in the Japanese House of Representatives, and was first implemented in the 1996 general election.
Tokyo 2nd district is a constituency of the House of Representatives in the Diet of Japan. It is located in eastern mainland Tokyo and covers central parts of the former Tokyo City. The district consists of the wards of Chūō, Bunkyō and Taitō. As of 2012, 424,273 eligible voters were registered in the district.
Tokyo 2nd district was a constituency of the House of Representatives in the Diet of Japan. Between 1947 and 1993 it elected three, later five representatives by single non-transferable vote. It initially consisted of Shinagawa and Ōta in Eastern mainland Tokyo and, following their return from US military administration, Tokyo's Izu and Ogasawara islands. Since the election of 1996, the area forms the new single-member 3rd district.
Tokyo 7th district was a constituency of the House of Representatives in the Diet of Japan. Between 1947 and 1993 it elected five, later four representatives by single non-transferable vote. It initially consisted of mainland Western Tokyo as a whole, namely the cities of Hachiōji and Tachikawa and the Nishitama, Minamitama and Kitatama districts of Tokyo.
Tokyo 8th district was a constituency of the House of Representatives in the Diet of Japan. Between 1967 and 1993 it elected three, later two representatives by single non-transferable vote. It was created in a 1964 redistricting form areas that had previously formed part of the 1st district: It consisted of Eastern Tokyo's Chūō, Bunkyō and Taitō special wards, central parts of the former city of Tokyo. In a reapportionment for the 1993 election the number of representatives for Tokyo 8th district was reduced from three to two. Following the 1994 electoral reform, the area now forms the single-member Tokyo 2nd district.
Tōkyō 25th district is a constituency of the House of Representatives in the Diet of Japan. It is located in the westernmost part of Tokyo prefecture. In of 2012, 321,319 eligible voters were registered in the district giving it the highest vote weight in Tokyo – several districts in former Tokyo city in Eastern Tokyo have more than 450,000 voters – but still more than 1.5 times as many voters as the least populated electoral districts in Japan.
Tokyo 22nd District is an electoral district of the Japanese House of Representatives. The district was created in 1994 as part of the move to single-member constituencies, and it is currently represented by the Liberal Democratic Party's Tatsuya Ito.
Tokyo 19th District is an electoral district of the Japanese House of Representatives. the district was created in 1994 as part of the move towards single-member districts, and is currently represented by Constitutional Democratic Party's Yoshinori Suematsu.
Tokyo 16th District is an electoral district of the Japanese House of Representatives. the district was created in 1994 as a part of the move towards single-member districts, and it is currently represented by the Liberal Democratic member Hideo Ōnishi.
Tokyo 15th District is an electoral district of the Japanese House of Representatives. The district was established in 1994 as part of the change to single-member districts, and it is currently represented by independent politician Mito Kakizawa.
Niigata 4th District is an electoral district of the Japanese House of Representatives, the lower house of the National Diet. The district was created as part of the general move from multi-member districts to single-member districts in the House of Representatives.
