Tokyo 12th district

Japanese House of Representatives constituency
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Tokyo 12th District
Parliamentary constituency
for the Japanese House of Representatives
Numbered map of inner Tokyo single-member districts
PrefectureTokyo
Proportional DistrictTokyo
Current constituency
Created1994
SeatsOne
PartyKomeito
RepresentativeMitsunari Okamoto
WardsAdachi, Kita, parts of Itabashi and Toshima

Tokyo's 12th district is a single-member constituency of the House of Representatives, the lower house of the national Diet of Japan.[1]

It has been held by Mitsunari Okamoto of Komeito since 2021.[2]

List of Representatives

Election Representative Party Notes
1996[3] Eita Yashiro [ja] Liberal Democratic
2000[4]
2003[5] Akihiro Ota Komeito
2005[6]
2009[7] Ai Aoki Democratic
People's Life First
Tomorrow
2012[8] Akihiro Ota Komeito
2014[9]
2017[10]
2021[11] Mitsunari Okamoto Komeito

Election results

2021[11]
Party Candidate Votes % ±%
Komeito
(endorsed by LDP) 		Mitsunari Okamoto
(PR seat incumbent) 		101,020 39.88
Innovation Tsukasa Abe [ja]
(won PR seat) 		80,323 31.71 New
Communist Saori Ikeuchi 71,948 28.41
Majority 20,697 8.17
Registered electors 462,732
Turnout 57.45 Increase 4.98
Komeito hold
2017[10]
Party Candidate Votes % ±%
Komeito
(endorsed by LDP) 		Akihiro Ota
(incumbent) 		112,597 51.64
Communist Saori Ikeuchi
(PR seat incumbent) 		83,544 38.32
Assembly for Zero Parliamentary Compensation Masaru Nakamura 21,892 10.04 New
Majority 29,053 13.32
Registered electors 460,263
Turnout 52.47 Decrease 3.35
Komeito hold
2014[9]
Party Candidate Votes % ±%
Komeito
(endorsed by LDP) 		Akihiro Ota
(incumbent) 		88,499 41.64
Communist Saori Ikeuchi
(won PR seat) 		44,721 21.04
People's Life Ai Aoki
(PR seat incumbent) 		40,067 18.85 New
Future Generations Toshio Tamogami 39,233 18.46 New
Majority 43,778 20.60
Registered electors 398,205
Turnout 56.04 Decrease 6.94
Komeito hold
2012[8]
Party Candidate Votes % ±%
Komeito
(endorsed by LDP) 		Akihiro Ota 114,052 51.43
Tomorrow
(endorsed by Daichi) 		Ai Aoki
(incumbent)
(won PR seat) 		56,432 25.45 New
Communist Saori Ikeuchi 41,934 18.91
Happiness Realization Masami Hattori 9,359 4.22
Majority 57,620 25.98
Registered electors 394,907
Turnout 62.98 Decrease 6.08
Komeito gain from Tomorrow
2009[7]
Party Candidate Votes % ±%
Democratic
(endorsed by PNP) 		Ai Aoki 118,753 45.20
Komeito
(endorsed by LDP) 		Akihiro Ota
(incumbent) 		108,679 41.37
Communist Saori Ikeuchi 31,475 11.98
Happiness Realization Hideyuki Yokuni [ja] 3,813 1.45 New
Majority 10,074 3.83
Registered electors 393,158
Turnout 69.06 Increase 1.26
Democratic gain from Komeito
2005[6]
Party Candidate Votes % ±%
Komeito Akihiro Ota
(incumbent) 		109,636 43.18
Democratic Yukihisa Fujita
(PR seat incumbent) 		73,943 29.12
Independent Eita Yashiro [ja]
(PR seat incumbent) 		44,279 17.44 New
Communist Ken Nonoyama 26,068 10.27
Majority 35,693 14.06
Turnout 67.80
Komeito hold
2003[5]
Party Candidate Votes % ±%
Komeito Akihiro Ota
(PR seat incumbent) 		98,700 44.05 New
Democratic Yukihisa Fujita
(won PR seat) 		95,110 42.45
Communist Mitsuo Yamagishi 30,251 13.50
Majority 3,590 1.60
Turnout
Komeito gain from Liberal Democratic
2000[4]
Party Candidate Votes % ±%
Liberal Democratic Eita Yashiro [ja]
(incumbent) 		90,208 40.73
Democratic Yukihisa Fujita
(PR seat incumbent) 		64,913 29.31 New
Communist Mitsuo Yamagishi 45,482 20.53
Liberal League Shinichiro Kurimoto
(Tokyo 3rd incumbent) 		20,902 9.44 New
Majority 25,295 11.42
Turnout
Liberal Democratic hold
1996[3]
Party Candidate Votes % ±%
Liberal Democratic Eita Yashiro [ja] 61,461 28.41 New
New Frontier Tamaki Sawa [ja] 60,289 27.87 New
Communist Kohei Īda 45,858 21.20 New
Democratic Muneharu Wada [ja] 38,785 17.93 New
Independent Kennei Yasuda 5,501 2.54 New
New Socialist Eiko Tomiyama 4,456 2.06 New
Majority 1,172 0.54
Turnout
Liberal Democratic win (new seat)

References

  1. ^ "総務省｜平成28年9月2日現在選挙人名簿及び在外選挙人名簿登録者数". 総務省 (in Japanese). Retrieved 2021-12-15.
  2. ^ "岡田克也君_衆議院". www.shugiin.go.jp. Retrieved 2022-06-01.
  3. ^ a b "第41回衆議院議員選挙 - 東京12区". Senkyo.com (in Japanese). Retrieved 2023-10-29.
  4. ^ a b "第42回衆議院議員選挙 - 東京12区". Senkyo.com (in Japanese). Retrieved 2023-10-29.
  5. ^ a b "第43回衆議院議員選挙 - 東京12区". Senkyo.com (in Japanese). Retrieved 2023-10-29.
  6. ^ a b "第44回衆議院議員選挙 - 東京12区". the Asahi Shinbun (in Japanese). Retrieved 2023-10-29.
  7. ^ a b "第45回衆議院議員選挙 - 東京12区". the Asahi Shinbun (in Japanese). Retrieved 2023-10-29.
  8. ^ a b "開票結果 小選挙区 東京". Yomiuri Shimbun (in Japanese). Retrieved 2023-10-29.
  9. ^ a b "2014衆院選:衆議院選挙:選挙アーカイブス:NHK選挙WEB". NHK (in Japanese). Retrieved 2023-10-29.
  10. ^ a b "2017衆院選:衆議院選挙:選挙アーカイブス:NHK選挙WEB". Yomiuri Shimbun (in Japanese). Retrieved 2023-10-08.
  11. ^ a b "2021年衆議院総選挙　東京12区". NHK (in Japanese). Retrieved 2023-10-08.
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First-past-the-post (FPTP) districts and proportional representation (PR) "blocks" for the Japanese House of Representatives of the National Diet (1996–present)
Speaker of the House of Representatives of Japan: Fukushiro Nukaga, Ibaraki 2nd
Vice Speaker of the House of Representatives of Japan: Banri Kaieda, Tokyo PR
Hokkaidō
(8 block seats, 12 district seats)Tōhoku
(12 block seats, 23 district seats)Kita- (North) Kantō
(19 block seats, 32 district seats)Minami- (South) Kantō
(23 block seats, 33 district seats)Tokyo
(19 block seats, 25 district seats)Hokuriku-Shin'etsu
(10 block seats, 19 district seats)Tōkai
(21 block seats, 32 district seats)Kinki
(28 block seats, 47 district seats)Chūgoku
(10 block seats, 20 district seats)Shikoku
(6 block seats, 11 district seats)Kyūshū
(20 block seats, 35 district seats)Districts eliminated
in the 2002 reapportionments
Hokkaido 13
Yamagata 4
Shizuoka 9
Shimane 3
Oita 4
Districts eliminated
in the 2013 reapportionments
Fukui 3
Yamanashi 3
Tokushima 3
Kochi 3
Saga 3
Districts eliminated
in the 2017 reapportionments
Aomori 4
Iwate 4
Mie 5
Nara 4
Kumamoto 5
Kagoshima 5
Districts eliminated
in the 2022 reapportionments


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