Tokyo 16th District(東京都第16区, Tokyo-to dai-juroku-ku) 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. In 2024 the district was won by the Liberal Democratic member Yohei Onishi, son of Hideo Ōnishi. who was Representative 2012 – 2024.

Areas covered

Current district

As of 16 January 2023, the areas covered by this district are as follows:

  • Edogawa Chuo 1-3, Matsue 1-7, Osugi 1-5, Nishi-Ichinoe 1-4, Haruecho 4, Ichinoe 1-8, Nishimizue 4, Edogawa 4, Matsumoto 1-2 Kasai, Tobu and Shishibone

As part of the 2022 redistricting, the former town of Komatsugawa was transferred to the 14th district.

Areas 2017–2022

From the second redistricting in 2017 until the third redistricting in 2022, the areas covered by this district were as follows:

  • Edogawa (Koiwa, excluding Kamiishiki 1-3, Honisshiki 1-3, and Okinomiya) Chuo 1-4, Matsushima 1-4, Matsue 1-7, Higashikomatsugawa 1-4, Nishikomatsugawa, Osugi 1-5, Nishi Ichinoe 1-4, Haruecho 4, Ichinoe 1-8, Nishimizue 4, Edogawa 4, Matsumoto 1-2 Within the Komatsugawa, Kasai, Tobu and Shishibone areas

As part of the 2017 redistricting, the former towns of Kamiishiki, Motoishiki and Okinomiya were all moved to the 17th district.

Areas 2013–2017

From the first redistricting in 2013 until the second redistricting in 2017, the areas covered by this district were as follows:

  • Edogawa Central Office (excluding Kami-Ishiki 3) Chuo 1-4, Matsushima 1-4, Matsue 1-7, Higashikomatsugawa 1-4, Nishikomatsugawa, Osugi 1-5, Nishi Ichinoe 1-4, Haruecho 4, Ichinoe (1, 8), Nishimizue 4, Edogawa 4, Matsumoto 1-2, Kamiisshiki 1-2, Honisshiki 1-3, Okinomiyacho Komatsugawa, Kasai, Tobu and Shishibone areas

As part of the 2013 redistricting, the area of Kamiishiki 3 was transferred to the 17th district.

Areas from before 2013

From the creation of the district in 1994 until the first redistricting in 2013, the areas covered by this district were as follows:

  • Edogawa Central Office Komatsugawa, Kasai, Tobu and Shishibone areas

Elected representatives

RepresentativePartyYears servedNotes
Yoshinobu ShimamuraLDP1996 – 2000Failed to get re-elected in the 2000 general election, won back the seat in the 2003 general election.
Yoshio UdagawaIndependent2000 – 2003Failed to get re-elected in the 2003 general election.
Yoshinobu ShimamuraLDP2003 – 2009Not re-elected in the 2009 general election
Akihiro HatsushikaDPJ2009 – 2012Not re-elected in the 2012 general election. Elected to the Tokyo PR district in the 2014 and 2017 general elections.
Hideo ŌnishiLDP2012 – 2024
Yohei OnishiLDP2024 –

Election results

‡ - Also ran in the Tokyo PR district

‡‡ - Also ran and won in the Tokyo PR district

2026
PartyCandidateVotes%±%
LDPYohei Onishi92,85844.67.3
Centrist ReformKatsuyuki Shibata51,52724.86.8
DPPTomoko Takeuchi42,38020.4
SanseitōTakeshi Murakami21,32010.31.6
Registered electors391,523
Turnout54.483.10
LDP hold
2024
PartyCandidateVotes%±%
LDPYohei Onishi71,72837.31.4
CDPKatsuyuki Shibata‡‡60,71431.61.8
IshinHirosato Nakatsugawa[jp]‡28,53814.92.2
SanseitōMasatoshi Arita16,6368.7
JCPSakae Miyamoto14,4647.54.2
Registered electors390,804
Turnout51.380.20
LDP hold
2021
PartyCandidateVotes%±%
LDPHideo Ōnishi (incumbent) (endorsed by Komeito)88,75838.72.2
CDPMotoko Mizuno‡68,39729.84.8
IshinHirosato Nakatsugawa‡39,29017.1New
JCPOta Ayaka26,81911.7New
Anti-NHKKen Tanaka‡6,2642.7New
Registered electors465,115
Majority20,3618.92.6
Turnout239,90651.64.1
LDP holdSwing3.8
2017
PartyCandidateVotes%±%
LDPHideo Onishi‡ (incumbent) (endorsed by Komeito)84,45740.95.3
CDPAkihiro Hatsushika‡‡71,40534.6New
Kibō no TōKenji Tamura50,56824.5New
Registered electors462,216
Majority13,0526.313.4
Turnout219,50647.51.6
LDP holdSwing6.8
2014
PartyCandidateVotes%±%
LDPHideo Onishi‡ (incumbent) (endorsed by Komeito)98,53646.38.3
IshinAkihiro Hatsushika‡‡ (endorsed by the DPJ)56,70126.6New
JCPAsako Ota‡36,97617.411.3
Japanese KokoroYoshiaki Ishii‡11,4845.4New
IndependentTakashi Okamoto9,3344.4New
Registered electors455,218
Majority41,83519.70.3
Turnout223,33049.18.4
LDP holdSwing6.1
2012
PartyCandidateVotes%±%
LDPHideo Onishi‡ (incumbent)95,22238.03.9
RestorationHirosato Nakatsugawa‡ (incumbent - Tokyo PR)46,53718.6New
YourReiko Ueda‡43,71917.3New
TomorrowAkihiro Hatsushika‡ (incumbent) (endorsed by the NDP)27,52511.0New
DemocraticKatsuyoshi Konno‡ (endorsed by the PNP)22,7419.138.3
JCPKayoko Shimacho15,1456.12.5
Registered electors452,248
Majority48,68519.4New
Turnout260,13357.54.4
LDP gain from DemocraticSwing9.5
2009
PartyCandidateVotes%±%
DemocraticAkihiro Hatsushika‡128,40047.414.3
LDPYoshinobu Shimamura (incumbent)113,63441.915.1
JCPKyoichi Kawai23,3858.61.3
Happiness RealizationIchiro Kojima5,7632.1New
Registered electors450,445
Majority14,7665.5New
Turnout279,00661.91.5
Democratic gain from LDPSwing8.2
2005
PartyCandidateVotes%±%
LDPYoshinobu Shimamura145,43957.021.7
DemocraticHirosato Nakatsugawa‡ (incumbent - Tokyo PR)84,56433.12.1
JCPYasunori Abe25,3289.92.0
Registered electors439,858
Majority60,87523.919.4
Turnout265,49860.46.1
LDP holdSwing13.3
2003
PartyCandidateVotes%±%
LDPYoshinobu Shimamura80,01535.34.9
DemocraticHirosato Nakatsugawa‡‡ (incumbent - Tokyo PR)70,18931.06.3
Independent SocietyYoshi Udagawa58,25025.7New
JCPYasunori Abe‡17,9857.95.7
Registered electors432,954
Majority9,8264.3New
Turnout234,96454.32.1
LDP gain from IndependentSwing6.7
2000
PartyCandidateVotes%±%
IndependentYoshio Udagawa72,82532.1New
LDPYoshinobu Shimamura‡ (incumbent)69,54330.68.4
DemocraticHirosato Nakatsugawa‡‡53,89723.7New
JCPYasunori Abe30,77213.60.4
Registered electors417,198
Majority3,2821.5New
Turnout235,13356.44.8
Independent gain from LDPSwingN/A
1996
PartyCandidateVotes%±%
LDPYoshinobu Shimamura‡ (incumbent - former Tokyo 10th District)77,75339.0New
New FrontierNaoko Sato64,94232.6New
DemocraticKazuo Inoue28,80514.4New
JCPYasunori Abe27,92314.0New
Registered electors396,286
Majority12,8116.4New
Turnout204,44451.6New
LDP win (new seat)