Redone Japan house of representatives seats

[President Punxsutawney Phil]

Saitama-1: Misato city, Yashio city, Yoshikawa city, a small part of Sako city
Saitama-2: the bulk of Sako city and part of Koshigaya city
Saitama-3: the rest of Koshigaya city, and Matsubushi town
Saitama-4: southern half of Kawaguchi city
Saitama-5: northern half of Kawaguchi city
Saitama-6: Waraba city, Toda city, and most of Minami ward in Saitama
Saitama-7: the rest of Minami ward, and Midori and Urawa wards in Saitama
Saitama-8: a third of Omiya ward, Sakura, Chuo, and Nishi wards in Saitama
Saitama-9: the rest of Omiya ward, Minuma and Kita wards in Saitama
Saitama-10: Iwatsuki ward in Saitama, Kasukabe city
Saitama-11: Sugito town, Satte city, Miyashiro town, Shiraoka city, Hasuda city, Ina town, southern half of Kuki city
Saitama-12: the rest of Kuki city, Kazo city, Hanyu city, Gyoda city
Saitama-13: Okegawa city, Ageo city
Saitama-14: Kitamoto city, Kōnosu city, Yoshimi town, Kawashimi town, Higashimatsuyama city, Namegawa town
Saitama-15: Kumagaya city, part of Fukuya city
Saitama-16: Asaka city, Wako city, Shiki city
Saitama-17: Niiza city, Miyoshi town, Fujimi city
Saitama-18: Tokorozawa city
Saitama-19: Fujimino city, eastern Kawagoe city
Saitama-20: western Kawagoe city, Sayama city
Saitama-21: Iruma city, part of Hanno city, Hidaka city, Tsurugashima city, Moroyama town, Ogose town, Hatoyama town
Saitama-22: Honjo city, Kodama district, Chichibu district, Chichibu city
Saitama-23: the rest of Saitama prefecture

[President Punxsutawney Phil]

Tokyo-1: Nish**tama district, Ome city, Hamura city, Akiruno city
Tokyo-2: western parts of Hachioji city
Tokyo-3: eastern parts of Hachioji city, northern Machida city
Tokyo-4: the rest of Machida city
Tokyo-5: Musashimurayama city, Tachikawa city, Fussa city
Tokyo-6: Hino city, Akishima city
Tokyo-7: Tama city, Inaji city, southern parts of Fuchu city
Tokyo-8: the rest of Fuchu city, Kinitachi city, Kokubunji city
Tokyo-9: Higashimurayama city, Higashiyamato city, Kiyose city
Tokyo-10: Kodaira city, Higashikurume city
Tokyo-11: Nish**tokyo city, 75% of Musashino city
Tokyo-12: Koganei city, Mitaka city, the rest of Musashino city
Tokyo-13: Chofu city, Komae city
Tokyo-14: southern Setagaya city
Tokyo-15: northern Setagaya city
Tokyo-16: western Setagaya city
Tokyo-17: eastern Suginami city
Tokyo-18: western Suginami city, southwestern Nerima city
Tokyo-19: western Nerima city
Tokyo-20: eastern Nerima city
Tokyo-21: Nakano city
Tokyo-22: northern Itabashi city
Tokyo-23: southern Itabashi city
Tokyo-24: Kita city
Tokyo-25: Toshima city
Tokyo-26: Shinjuku city
Tokyo-27: Megura city
Tokyo-28: southern Ota city
Tokyo-29: northern Ota city
Tokyo-30: most of Shinagawa city
Tokyo-31: Sheboya city, part of Shinagawa city
Tokyo-32: Minato city, Chiyado city
Tokyo-33: Akarawa city, northern half of Taito city
Tokyo-34: Bunkyo city, southern half of Taito city
Tokyo-35: Chou, western parts of Koto city
Tokyo-36: eastern half of Koto city
Tokyo-37: Sumida city, some far southern parts of Adachi city
Tokyo-38: southern half of Adachi city
Tokyo-39: northern half of Adachi city
Tokyo-40: most of Katsushika city
Tokyo-41: southern areas in Katsushika city, northern Edogawa city
Tokyo-42: southern Edogawa city, and all of the offshore islands that are part of Tokyo Prefecture

Note: from Tokyo-14 and later, the so-called 'cities' are in fact special wards, perhaps best compared to London boroughs. They were referred to as 'cities' for convenience purposes.

[President Punxsutawney Phil]

Kanagawa-1: Kawasaki ward, most of Saiwai ward in Kawasaki city
Kanagawa-2: the rest of Saiwai ward, Nakahara ward in Kawasaki city
Kanagawa-3: Takatsu ward, part of Miyamae ward in Kawasaki city
Kanagawa-4: part of Miyamae ward, Tama ward in Kawasaki city
Kanagawa-5: the rest of Kawasaki city, and a tiny slice of Aoba ward in Yokohama in order to have continguity
Kanagawa-6: the vast bulk of Aoba ward in Yokohama city
Kanagawa-7: Kohuko ward in Yokohama city
Kanagawa-8: Tsurumi ward, 1/8th of Kanagawa ward in Yokohama city
Kanagawa-9: the rest of Kanagawa ward, Nishi ward in Yokohama city
Kanagawa-10: Seya and Izumi wards in Yokohama city
Kanagawa-11: Tsuzuki ward and the eastern 66% of Midori ward in Yokohama city
Kanagawa-12: Asahi ward and the western 34% of Midori ward in Yokohama city
Kanagawa-13: Hodogaya ward, northern Minami ward in Yokohama city
Kanagawa-14: Konan ward, southern Minami ward in Yokohama city
Kanagawa-15: Naka, Isago wards in Yokohama city
Kanagawa-16: Totsuka ward and the western 34% of Sakae ward in Yokohama city
Kanagawa-17: Kanazawa ward and the eastern 66% of Sakae ward in Yokohama city
Kanagawa-18: Miura city, the southern two-thirds of Yokosuka city
Kanagawa-19: the rest of Yokosuka city, Hayama town, Zushi city, a third of Kamakura
Kanagawa-20: most of the rest of Kamakura city, southern Fujisawa city
Kanagawa-21: the rest of Fujisawa city, Ebina city
Kanagawa-22: Ayase city, Yamato city
Kanagawa-23: Chigasaki city, Samukawa town, a small part of Yamakura
Kanagawa-24: Zama city, most of Atsugi city
Kanagawa-25: Minami ward and 20% of Chuo ward in Sagamihara
Kanagawa-26: the rest of Chuo ward and half of Midori ward in Sagamihara
Kanagawa-27: the rest of the cities of Sagamihara and Atsugi, Aiko district, Isehara city, Matsuda town, Yamakita town
Kanagawa-28: Hiratsuka city, part of Hadano city
Kanagawa-29: the rest of Kanagawa preferecture

[President Punxsutawney Phil]

Yamanashi-1: Hokuto city, Kai city, Nirasaki city, Minami-Alps city, Minamikoma district, Chuo city, Showa town, a tiny part Kifu city
Yamanashi-2: the bulk of Kifu city, Fuefeki city, Yamanashi city, Koshu city
Yamanashi-3: the rest of Yamanashi preferecture

[President Punxsutawney Phil]

190/395 seats so far

[Lachi]

I think the PR blocks should be
Hokkaido
Tohoku
Kitakanto
Tokyo
Minamikanto
Chubu
Kansai
Osaka
Chugoku
Shikoku
Kyushu

CHANGES: Hokuriku and Tokai are merged into Chubu, Kinki becomes Kansai, with Osaka a seperate block.

Yes, there are still 11, but it makes a lot more sense having Osaka seperate and keeping Kanto split as there are just so many people in that area.

[President Punxsutawney Phil]

Something like this?

Hokkaido (Hokkaido) - 5,383,579 (11)
Tohoku (Aomori, Iwate, Akita, Miyagi, Yamagata, Fukushima) - 8,982,080 (18)
Kita Kanto (Ibaraki, Tochigi, Gunma, Saitama) - 14,127,275 (28)
Tokyo (Tokyo) - 13,513,734 (27)
Minami Kanto (Chiba, Kanagawa) - 15,351,350 (31)
Chubu (Niigata, Toyama, Ishikawa, Fukui, Yamanashi, Nagano, Gifu, Shizuoka, Aichi)  - 21,466,155 (43)
Kansai (Mie, Shiga, Kyoto, Hyōgo, Nara, Wakayama) - 13,704,998 (27)
Osaka (Osaka) - 8,838,908 (18)
Chugoku (Tottori, Shimane, Okayama, Hiroshima, Yamaguchi) - 7,439,987 (15)
Shikoku (Tokushima, Kagawa, Ehime, Kōchi) - 3,847,120 (8)
Kyushu (Fukuoka, Saga, Nagasaki, Kumamoto, Ōita, Miyazaki, Kagoshima, Okinawa) - 14,454,861 (29)
total: 127,110,047
quota - 498,471

[President Punxsutawney Phil]

Shizuoka-1: Shimoda city, Kamo district, Izu city, Ito city, Izunokuni city, Atami city, Kannami town, the southern parts of Namazu city
Shizuoka-2: the rest of Namazu city, part of Fuji city
Shizuoka-3: Nagaizumi town, Susono city, Gotemba city, Oyama town, Mishima city
Shizuoka-4: Fujinomiya city, most of Fuji city, a fifth of Shimizu ward in Shizuoka city
Shizuoka-5: Suruga ward, half of Shimizu ward in Shizuoka city
Shizuoka-6: Aoi ward, a third of Shimizu ward in Shizuoka city
Shizuoka-7: Yaizu city, Fujieda city, Yoshida town
Shizuoka-8: Makinohara city, Omaezaki city, Kikugawa city, part of Kakegawa city, Shimada city
Shizuoka-9: the rest of Kakegawa city, Fukoroi city, Iwata city
Shizuoka-10: Kawanehon town, Mori town, Tenryū ward, 40% of Hamakita ward, and Kita ward in Hamamatsu city
Shizuoka-11: Minami ward, Higashi ward, 60% of Hamakita ward in Hamamatsu city
Shizuoka-12: the rest of Shizuoka preferecture

[Lachi]

Something like this?

Hokkaido (Hokkaido) - 5,383,579 (11)
Tohoku (Aomori, Iwate, Akita, Miyagi, Yamagata, Fukushima) - 8,982,080 (18)
Kita Kanto (Ibaraki, Tochigi, Gunma, Saitama) - 14,127,275 (28)
Tokyo (Tokyo) - 13,513,734 (27)
Minami Kanto (Chiba, Kanagawa) - 15,351,350 (31)
Chubu (Niigata, Toyama, Ishikawa, Fukui, Yamanashi, Nagano, Gifu, Shizuoka, Aichi)  - 21,466,155 (43)
Kansai (Mie, Shiga, Kyoto, Hyōgo, Nara, Wakayama) - 13,704,998 (27)
Osaka (Osaka) - 8,838,908 (18)
Chugoku (Tottori, Shimane, Okayama, Hiroshima, Yamaguchi) - 7,439,987 (15)
Shikoku (Tokushima, Kagawa, Ehime, Kōchi) - 3,847,120 (8)
Kyushu (Fukuoka, Saga, Nagasaki, Kumamoto, Ōita, Miyazaki, Kagoshima, Okinawa) - 14,454,861 (29)
total: 127,110,047
quota - 498,471

Yes, that's what I had in mind

[President Punxsutawney Phil]

Nagano-1: Shimoina district, Iida city, Kiso district, Iijima town, Nakagawa village, Komagane city, Ina city
Nagano-2: Minamiminowa village, Minowa town, Tatsuna town, Shiojiri city, Yamagata village, Asahi village, 60% of Matsumoto city
Nagano-3: 40% of Matsumoto city, Azumino city, Omachi city, Kitaazumi district, Omi village, Chikuhoku village, Aoki village, Chikuma city
Nagano-4: Nagano city
Nagano-5: Iizuna town, Shinano town, Iiyama city, Nakano city, Shimotaki district, Sakae village, Kamitakai district, Suzaka city, Sakaki town, 50% of Ueda city
Nagano-6: the rest of Ueda city, Tomi city, Komoro city, Kitasaku district, half of Suka city
Nagano-7: the rest of Nagano prefecture

[President Punxsutawney Phil]

Something like this?

Hokkaido (Hokkaido) - 5,383,579 (11)
Tohoku (Aomori, Iwate, Akita, Miyagi, Yamagata, Fukushima) - 8,982,080 (18)
Kita Kanto (Ibaraki, Tochigi, Gunma, Saitama) - 14,127,275 (28)
Tokyo (Tokyo) - 13,513,734 (27)
Minami Kanto (Chiba, Kanagawa) - 15,351,350 (31)
Chubu (Niigata, Toyama, Ishikawa, Fukui, Yamanashi, Nagano, Gifu, Shizuoka, Aichi)  - 21,466,155 (43)
Kansai (Mie, Shiga, Kyoto, Hyōgo, Nara, Wakayama) - 13,704,998 (27)
Osaka (Osaka) - 8,838,908 (18)
Chugoku (Tottori, Shimane, Okayama, Hiroshima, Yamaguchi) - 7,439,987 (15)
Shikoku (Tokushima, Kagawa, Ehime, Kōchi) - 3,847,120 (8)
Kyushu (Fukuoka, Saga, Nagasaki, Kumamoto, Ōita, Miyazaki, Kagoshima, Okinawa) - 14,454,861 (29)
total: 127,110,047
quota - 498,471

Yes, that's what I had in mind

I think I'll adopt it, with one difference - Chubu is split in two, to make its district size be more in line with other seats.
Hokkaido (Hokkaido) - 5,383,579 (11)
Tohoku (Aomori, Iwate, Akita, Miyagi, Yamagata, Fukushima) - 8,982,080 (18)
Kita Kanto (Ibaraki, Tochigi, Gunma, Saitama) - 14,127,275 (28)
Tokyo (Tokyo) - 13,513,734 (27)
Minami Kanto (Chiba, Kanagawa) - 15,351,350 (31)
Kita Chubu (Niigata, Toyama, Ishikawa, Fukui, Nagano, Gifu)  - 9,445,715 (19)
Minami Chubu (Aichi, Shizuoka, Yamanashi) - 12,020,440 (24)
Kansai (Mie, Shiga, Kyoto, Hyōgo, Nara, Wakayama) - 13,704,998 (27)
Osaka (Osaka) - 8,838,908 (18)
Chugoku (Tottori, Shimane, Okayama, Hiroshima, Yamaguchi) - 7,439,987 (15)
Shikoku (Tokushima, Kagawa, Ehime, Kōchi) - 3,847,120 (8)
Kyushu (Fukuoka, Saga, Nagasaki, Kumamoto, Ōita, Miyazaki, Kagoshima, Okin.) - 14,454,861 (29)
total: 127,110,047
quota - 498,471

[President Punxsutawney Phil]

Toyama-1: everything east of Toyama city, 40% of Toyama city
Toyama-2: 60% of Toyama city, Imizu city
Toyama-3: everything west of the cities of Imizu and Toyama

[President Punxsutawney Phil]

Gifu-1: Ogaki city, Kaizu city, Yoro town, Anpachi district, Fuwa district, Ikeda town
Gifu-2: Ono town, Ibigawa town, Motosu city, Mizuho city, 40% of Gifu city
Gifu-3: 60% of Gifu city, Hashima city, Hashima district
Gifu-4: Yamagata city, Seki city, Mino city, Gujo city, Gero city, Takayama city, Hida city, Shirakawa city
Gifu-5: Nakatsugawa city, Ena city, Kamo district, Minokamo city, Kakamigahara city
Gifu-6: the cities of Kani, Tajimi, Toki, Mizunami

[President Punxsutawney Phil]

Aichi-1: Tahara city, two-thirds of Toyohashi city
Aichi-2: the rest of Toyohashi city, Toyokawa city
Aichi-3: Shinshiro city, Kitash**tara district, part of Okazaki city, half of Toyota city
Aichi-4: most of Okazaki city
Aichi-5: the rest of Toyota city, Seto city, Miyoshi city, half of Toyota city
Aichi-6: Owariasahi city, Nagakute city, Nisshin city, Tōgō town, Toyoake city
Aichi-7: Gamagori city, Kota town, Nishio city, half of Henikan
Aichi-8: Anjo city, Takahama city, half of Henikan, Chiryu city
Aichi-9: Chita district, Tokoname city, Handa city
Aichi-10: Kariya city, Ōbu city, Chita city, parts of far southern Tokai city
Aichi-11: Midori ward in Nagoya city, the rest of Tokai city
Aichi-12: Minami and Minato wards in Nagoya city
Aichi-13: Meito and Tempaku wards in Nagoya city
Aichi-14: Naka, Showa, Mizuho, and Atsuta wards in Nagoya city
Aichi-15: Moriyama and Chikusa wards in Nagoya city
Aichi-16: Higashi and Kita wards, a third of Kita ward in Nagoya city
Aichi-17: Nakagawa ward, most of Nakamura ward in Nagoya city
Aichi-18: the rest of Nagoya city, Kiyosu city, Ama city, Ōharu town
Aichi-19: Tobishima village, Yatomi city, Aisai city, Tsushima city, Kanie town, Inazawa city
Aichi-20: 85% of Ichinomaya city
Aichi-21: the rest of Ichinomaya city, Iwakura city, Kitanagoya city, Kōnan city
Aichi-22: Niwa district, Toyoyama town, Komaki city, Inuyama city
Aichi-23: Kasugai city

[President Punxsutawney Phil]

Ishikawa-1: Hosu district, Suzu city, Wajima city, Nanao city, Kashima district, Hakui district, Hakui city, Kahoku city
Ishikawa-2: Kahoku district, almost half of Kanazawa city
Ishikawa-3: a slim majority of Kanazawa city, Nonoichi city
Ishikawa-4: the rest of Ishikawa preferecture

[President Punxsutawney Phil]

Fukui-1: Oi district, Obama city, Wakasa town, Mihama town, Tsuruga city, Nanjo district, both Echizens
Fukui-2: Fukui city, except for a tiny area in Fukui-3 for contiguity reasons
Fukui-3: the rest of Fukui preferecture

[President Punxsutawney Phil]

Shiga-1: Takashima city, Nagahama city, Maibara city, Hikone city
Shiga-2: most of Otsu city
Shiga-3: the rest of Otsu city, Kusatsu city, Ritto city
Shiga-4: Moriyama city, Yasu city, Ōmihachiman city, Ryuo town, Konan city, northern Higashiomi
Shiga-5: the rest of Shiga preferecture

[President Punxsutawney Phil]

Mie-1: Kuwana city and district, Mie district, Toin town, Inabe city
Mie-2: Yokkaichi city
Mie-3: Suzuka city, Kameyama city, some northern areas in Tsu city
Mie-4: Iga city, Nabari city, most of the remaining portion of Tsu city
Mie-5: the rest of Tsu City, Matsusaka city, Taki district
Mie-6: the rest of Mie preferecture

[President Punxsutawney Phil]

Nara-1: Yoshino district, Gojo city, Uda district, Uda city, Sakurai city, Takaichi district, Yamazoe village, parts of Nara city, Gose city, about 75% of Kashihara city
Nara-2: almost all of Nara city
Nara-3: Katsuragi city, Yamatotakada city, the rest of Kashihara city, Kashiba city, Kitakatsuragi district
Nara-4: the rest of Nara preferecture

[President Punxsutawney Phil]

Wakayama-1: most of the city of Wakayama
Wakayama-2: the rest of Wakayama city, Iwade city, Kinokawa city, Hashimoto city, Kainan city, Kimono town, Arida city
Wakayama-3: the rest of Wakayama preferecture

[President Punxsutawney Phil]

Kyoto-1: Soraku district, Kizugawa city, Tsuzuki district, Joyo city, three-quarters of Yawata city
Kyoto-2: the rest of Yawata city, Kumiyama town, Ōyamazaki town, Miko city, Nagaokakyō city, part of Fushimi ward in Kyoto
Kyoto-3: the rest of Fushimi ward in Kyoto, Uji city
Kyoto-4: Yamashina ward, Sakyo ward in Kyoto
Kyoto-5: Higashiyama ward, Shimogyō ward, Nakagyō ward, Minami ward in Kyoto
Kyoto-6: Kamigyō ward, Kita ward, the vast majority of the area of Ukyo ward in Kyoto, Kameoka city
Kyoto-7: Nishikyō ward, the vast majority of the population of Ukyo ward in Kyoto
Kyoto-8: the rest of Kyoto Prefecture

[President Punxsutawney Phil]

Osaka-1: Sennan district, Hannan city, Sennan city, Izumisano city, half of Kaizuka city
Osaka-2: half of Kaizuka city, Kishiwada city, Izumiōtsu city, Tadaoka town
Osaka-3: Takaishi city, Izumi city, Kawachinagano city
Osaka-4: Ōsakasayama city, Tondabayashi city, Minamikawachi district, Habikino city
Osaka-5: Matsubara city, Fujiidera city, Kashiwara city, far southern parts of Yao city
Osaka-6: the rest of Yao city, areas in southern Higashiosaka
Osaka-7: eastern parts of Higashiosaka
Osaka-8: western parts of Higashiosaka
Osaka-9: areas in northern Higashiosaka, Daito city, Kadoma city
Osaka-10: Moriguchi city, three-quarters of Neyagawa city
Osaka-11: part of Neyagawa city, Shijōnawate city, Katano city, parts of Hirakata city
Osaka-12: the rest of Hirakata city
Osaka-13: most Takatsui city, Shimamoto town
Osaka-14: southern Takatsui city, Ibaraki city
Osaka-15: Settsu city, most of Suita city
Osaka-16: Toyono district, Minoh city, Ikeda city, northern areas in Toyonaka city
Osaka-17: most of Toyonaka city
Osaka-18: Higashiyodogawa ward in Osaka city, and the rest of Suita city
Osaka-19: Yodogawa ward, Nishiyodogawa ward, Konohana ward in Osaka city
Osaka-20: Fukushima ward, Kita ward, Nishi ward, in Osaka city
Osaka-21: Tsurumi ward, Miyakojima ward, Asahi ward in Osaka city
Osaka-22: Joto ward, Chuo ward in Osaka city
Osaka-23: Higashinari ward, Ikuno ward, Tennoji ward, Naniwa ward in Osaka city
Osaka-24: Hirano ward, Higashisumiyoshi ward in Osaka city
Osaka-25: Abeno ward, Nishinari ward, Taisho ward, Minato ward in Osaka city
Osaka-26: Suminoe ward, Sumiyoshi ward in Osaka city; Higashi ward, Mihara ward in Sakai
Osaka-27: Sakai ward, Kita ward in Sakai
Osaka-28: Nishi ward, Naka ward, Minami ward in Sakai

[President Punxsutawney Phil]

304/395 seats done so far.

One of Nara's constituencies has over 80% of the land area.

[President Punxsutawney Phil]

Hyogo-1: eastern Amagasaki city
Hyogo-2: western Amagasaki city, eastern Nishinomiya city
Hyogo-3: western Nishinomiya city, Ashiya city
Hyogo-4: Higashinada ward, Nada ward in Kobe city
Hyogo-5: Chou ward, Hyogo ward, Nagata ward in Kobe city
Hyogo-6: Kita ward and parts of Nishi ward in Kobe city
Hyogo-7: Suma ward and parts of Nishi ward in Kobe city
Hyogo-8: Awaji Island, Tarumi ward of Kobe City
Hyogo-9: Itami city, southern Takarazuka city
Hyogo-10: northern Takarazuka city, Inagawa town, Kawanishi city
Hyogo-11: Sanda city, Miki city, Kato city, Ono city, Sasayama city
Hyogo-12: Akashi city, Harima town
Hyogo-13: Inami town, Kakogawa city
Hyogo-14: Takasago city, Taishi town, southern Hideki city
Hyogo-15: northern Hideki city
Hyogo-16: Tatsuno city, Aioi city, Ako city, Kamigori town, Sayo town, Shiso city, Kanzaki district
Hyogo-17: the rest of Hyogo preferecture

[President Punxsutawney Phil]

Tottori-1: Tottori city and all of towns bordering it
Tottori-2: the rest of Tottori prefecture

Okayama-1: Bizen city, Setouchi city, Wake town, Akaiwa city, Mimasaka city, Nishiawakura village, Katsuta district, Tsuyama city, Kagamino town
Okayama-2: Kita ward in Okayama city
Okayama-3: the rest of Okayama city bar half of Minami ward
Okayama-4: half of Minami ward in Okayama city, Tamano city, the south half of Kurashiki
Okayama-5: the rest of Kurashiki, Hayashima town
Okayama-6: the rest of Okayama preferecture