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Hokkaido 5th district

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Japan House of Representatives constituency

Hokkaidō 5th District
Parliamentary constituency for theJapanese House of Representatives
Numbered map of Hokkaidō Prefecture single-member districts
Sapporo-area detail
Prefecture	Hokkaidō
Proportional District	Hokkaidō
Electorate	427,594(2026)^[1]
Current constituency
Created	1994
Seats	One
Party	CDP
Representative	Maki Ikeda
Created from	Hokkaido's 1st medium sized district [ja]
Municipalities	Sapporo'sAtsubetsu Ward andIshikari Subprefecture

Hokkaidō 5th district (Hokkaidō [dai-]go-ku (北海道[第]5区)) is a constituency of theHouse of Representatives in theDiet of Japan. It consists ofAtsubetsu ward and a portion ofShiroishi ward inHokkaido's city ofSapporo andIshikari Subprefecture excluding Sapporo andIshikari city. As of 2009, 453,752 eligible voters were registered in the district.^[2]

The district was created in the 1994 electoral reform from parts of the previous1st district where six representatives had been elected by single-non-transferable vote. Representatives from the old 1st district includedKingo Machimura and his sonNobutaka Machimura.

Nobutaka Machimura (LDP, Machimura faction) safely won the new 5th district in the 1996 election and defended it againstDemocratic challenger Chiyomi Kobayashi in subsequent elections. However, the Democratic Party won the general election of 2009 handily, and Kobayashi defeated Machimura by 30,000 votes. In response to a political funds scandal, she resigned in June 2010.^[3] Machimura resigned from his seat in theHokkaidō proportional block to run in the resulting by-election in October 2010 and defeated former construction ministry bureaucrat Shigeyuki Nakamae by a clear margin to regain his district seat.^[4]

In the24 April 2016 by-election, Machimura's son-in-law, Liberal Democrat Yoshiaki Wada (Kōmeitō, Kokoro, Daichi) defeated united opposition independent Maki Ikeda (DP, JCP, SDP, PLP).^[5]^[6] Wada held the seat until he lost to Ikeda in the2024 election. Wada was accused of receiving 'dark money' in the2023–2024 Japanese slush fund scandal. Subsequently, the LDP did not allow Wada to run in theHokkaidō PR block and he lost his seat in the Diet.^[7]

List of representatives

[edit]

Representative		Dates	Notes
Nobutaka Machimura	LDP	1996–2009	Reelected in the Hokkaidō PR block
Chiyomi Kobayashi	DPJ	2009–2010	Resigned on 17 June 2010
Vacant (June – October 2010)
Nobutaka Machimura	LDP	2010–2015	Died in office
Vacant (2015–2016)
Yoshiaki Wada	LDP	2016 – 2024
Maki Ikeda	CDP	2024 – 2026	Also lost in thePR block
Yoshiaki Wada	LDP	2026-

Election results

[edit]

2026^[8]
Party		Candidate	Votes	%	±%
	LDP	Yoshiaki Wada	143,229	57.5	15.9
	CDP	Maki Ikeda	105,844	42.5	9.2
Turnout			249,073	60.21	2.01
	LDPgain fromCDP

2024^[9]
Party		Candidate	Votes	%	±%
	CDP	Maki Ikeda	125,444	51.7	11.4
	LDP	Yoshiaki Wada	100,893	41.6	9.0
	JCP	Ryūji Suzuki	16,399	6.8	0.7
Turnout				58.20	2.02
	CDPgain fromLDP

2021^[10]
Party		Candidate	Votes	%	±%
	LDP	Yoshiaki Wada (endorsed byKōmeitō)	139,950	50.60	0.76
	CDP	Maki Ikeda	111,366	40.26	7.23
	JCP	Mika Hashimoto	16,758	6.06
	Independent	Shintarō Ōtsu	8,520	3.08
Majority				10.34	7.99
Turnout				60.22	2.23
	LDPhold		Swing	3.99

2017^[11]
Party		Candidate	Votes	%	±%
	LDP	Yoshiaki Wada (endorsed byKōmeitō andNPD)	142,687	49.84	2.54
	CDP	Maki Ikeda (elected byPR)	135,948	47.49	0.13
	Happiness Realization	Yoshinori Moriyama	7,632	2.67	N/A
Majority			6,739	2.35	2.39
Turnout				62.55	4.92
	LDPhold		Swing	1.21

House of Representatives:2016 Hokkaido 5th district by-election^[12]
Party		Candidate	Votes	%	±%
	LDP	Yoshiaki Wada (endorsed byKōmeitō,PFG,NPD)	135,842	52.38	1.43
	Independent	Maki Ikeda (endorsed byDP,JCP,SDP,TPJ)	123,517	47.62	N/A
Rejected ballots			3,015	1.15
Majority			12,325	4.74	9.39
Turnout			262,374	57.63	0.80
	LDPhold		Swing	N/A

2014^[13]
Party		Candidate	Votes	%
	LDP	Nobutaka Machimura (endorsed byKōmeitō)	131,394	50.95
	Democratic	Kenji Katsube	94,975	36.82
	JCP	Ryūji Suzuki	31,523	12.23
Turnout				58.43

2012^[14]^[15]
	Candidate	Votes	%
LDP	Nobutaka Machimura (endorsed byKōmeitō)	128,435	48.62
Democratic	Shigeyuki Nakamae	69,075	26.15
Your	Yūji Nishida (endorsed byJRP)	41,025	15.53
JCP	Ryūji Suzuki	21,422	8.11
Happiness Realization	Yoshinori Moriyama	4,200	1.59

2010 by-election^[16]
Party		Candidate	Votes	%
	LDP	Nobutaka Machimura	125,636	52.3
	Democratic	Shigeyuki Nakamae	94,135	39.2
	JCP	Satoshi Miyauchi	15,583	6.5
	Independent	Michiko Kawamura	2,697	1.1
	Happiness Realization	Yoshinori Moriyama	2,325	1.0
Turnout			242,932	53.48

2009^[17]
Party		Candidate	Votes	%
	Democratic	Chiyomi Kobayashi (endorsed byPNP)	182,952	53.8
	LDP	Nobutaka Machimura (endorsed byKōmeitō) (elected byPR)	151,448	44.6
	Happiness Realization	Yasunori Hatano	5,380	1.6
Turnout			345,458	76.32

2005^[18]
Party		Candidate	Votes	%
	LDP	Nobutaka Machimura (endorsed byKōmeitō)	173,947	54.2
	Democratic	Chiyomi Kobayashi	124,547	38.8
	JCP	Takahiro Yamazaki	22,521	7.0
Turnout			325,642	73.18

2003^[19]
Party		Candidate	Votes	%
	LDP	Nobutaka Machimura (endorsed byKōmeitō,NCP)	129,035	47.0
	Democratic	Chiyomi Kobayashi (endorsed bySDP) (elected byPR)	120,192	43.7
	JCP	Satoshi Miyauchi	25,603	9.3
Turnout			280,993	64.06

2000^[20]
	Candidate	Votes	%
LDP	Nobutaka Machimura (endorsed byKōmeitō,NCP)	123,680	46.0
Democratic	Chiyomi Kobayashi	84,631	31.4
JCP	Satoshi Miyauchi	35,006	13.0
Liberal	Kentarō Ono	25,845	9.6

1996^[21]
Party		Candidate	Votes	%
	LDP	Nobutaka Machimura	113,282	49.8
	New Frontier	Kentarō Ono	61,846	27.2
	JCP	Satoshi Miyauchi	44,885	19.7
	Liberal League	Marie Ikenaka	7,576	3.3
Turnout			240,442	60.53

References

[edit]

^"北海道5区".go2senkyo. initial.inc. Retrieved9 February 2026.
^Ministry of Internal Affairs and Communications (MIC):平成21年9月2日現在における選挙人名簿及び在外選挙人名簿登録者数(in Japanese)
^"2 indicted over alleged illegal donations to DPJ lawmaker".The Free Library. Kyodo News International, Inc. Retrieved12 November 2021.
^The Japan Times, Oct. 25, 2010: LDP vet clinches Hokkaido by-election
^NHK News, 25 April 2016:衆院補選北海道5区は自民和田義明氏が当選 Archived 24 April 2016 at theWayback Machine
^Hokkaidō Shimbun, 24 April 2016:北海道5区補選、自民新人の和田氏勝利池田氏、猛追及ばず Archived 25 April 2016 at theWayback Machine
^"衆議院選挙北海道5区自民・和田義明氏落選確実".NHK News Web (in Japanese). Retrieved18 November 2024.
^小選挙区北海道 (in Japanese).NHK. Retrieved9 February 2026.
^小選挙区北海道 (in Japanese).NHK. Retrieved18 November 2024.
^開票速報小選挙区：北海道 - 2021衆議 (in Japanese).NHK. Retrieved12 November 2021.
^2017総選挙＞小選挙区開票速報：北海道（定数12） (in Japanese).Asahi Shimbun. Retrieved3 December 2017.
^衆議院北海道第5区選出議員補欠選挙投・開票速報 [House of Representatives - Hokkaido 5th district by-election early returns.] (in Japanese). 24 April 2016. Retrieved27 April 2016.
^総選挙2014>開票結果小選挙区北海道.Yomiuri Shimbun (in Japanese). Archived fromthe original on 17 March 2018. Retrieved19 February 2015.
^第46回衆議院議員選挙 – 北海道5区.[ザ･選挙] (in Japanese). Heartbeats. Retrieved22 December 2012.
^第46回総選挙>小選挙区開票速報：北海道.ザ･選挙] (in Japanese). Asahi Shimbun. Retrieved22 December 2012.
^第45回衆議院議員補欠選挙 – 北海道5区.[ザ･選挙] (in Japanese). Heartbeats. Retrieved22 December 2012.
^衆議院>第45回衆議院議員選挙>北海道>北海道5区.[ザ･選挙] (in Japanese). Heartbeats. Retrieved22 December 2012.
^衆議院>第44回衆議院議員選挙>北海道>北海道5区.[ザ･選挙] (in Japanese). Heartbeats. Retrieved22 December 2012.
^衆議院>第43回衆議院議員選挙>北海道>北海道5区.[ザ･選挙] (in Japanese). Heartbeats. Retrieved22 December 2012.
^衆議院>第42回衆議院議員選挙>北海道>北海道5区.[ザ･選挙] (in Japanese). Heartbeats. Retrieved22 December 2012.
^衆議院>第41回衆議院議員選挙>北海道>北海道5区.[ザ･選挙] (in Japanese). Heartbeats. Retrieved22 December 2012.

v t e Hokkaidō'selectoral districts for theDiet of Japan
FPTP "small" districts (1996–present) 1 2 3 4 5 6 7 8 9 10 11 12 (13) PR Hokkaidō PR block House of Councillors At-large (13→12 Representatives (PR block: 9→8), 4→6 Councillors)
SNTV "medium-sized" districts (1947–1993) 1 2 3 4 5 (22→23 Representatives, 8→4 Councillors)
Limited voting "large" districts (1946) 1 2 (23 Representatives)
SNTV "medium-sized" districts (1928–1942) 1 2 3 4 5 (20 Representatives)
FPTP/SNTV "small" districts (1920–1924) 1 2 3 4 5 6 7 8 9 10 11 12 (16 Representatives)
SNTV "large" districts era (1902–1917), in Hokkaidō FPTP single-member districts Sapporo city (ku) Hakodate city (ku) Otaru city (ku) subprefectures 1 subprefectures 2 subprefectures 3 (3→6 Representatives)

v t e First-past-the-post (FPTP) districts andproportional representation (PR) "blocks" for the JapaneseHouse of Representatives of theNational Diet (1996–present)
Speaker of the House of Representatives of Japan:Fukushiro Nukaga,Ibaraki 2nd Vice Speaker of the House of Representatives of Japan:Kōichirō Genba,Fukushima 2nd
Hokkaidō	Block 8 seats Hokkaidō 1 2 3 4 5 6 7 8 9 10 11 12
Tōhoku	Block 12 seats Aomori 1 2 3 Iwate 1 2 3 Miyagi 1 2 3 4 5 Akita 1 2 3 Yamagata 1 2 3 Fukushima 1 2 3 4
Kita- (North)Kantō	Block 19 seats Ibaraki 1 2 3 4 5 6 7 Tochigi 1 2 3 4 5 Gunma 1 2 3 4 5 Saitama 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Minami- (South)Kantō	Block 23 seats Chiba 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Kanagawa 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Yamanashi 1 2
Tokyo	Block 19 seats Tokyo 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Hokuriku-Shin'etsu	Block 10 seats Niigata 1 2 3 4 5 Toyama 1 2 3 Ishikawa 1 2 3 Fukui 1 2 Nagano 1 2 3 4 5
Tōkai	Block 21 seats Gifu 1 2 3 4 5 Shizuoka 1 2 3 4 5 6 7 8 Aichi 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Mie 1 2 3 4
Kinki	Block 28 seats Shiga 1 2 3 Kyoto 1 2 3 4 5 6 Osaka 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Hyōgo 1 2 3 4 5 6 7 8 9 10 11 12 Nara 1 2 3 Wakayama 1 2
Chūgoku	Block 10 seats Tottori 1 2 Shimane 1 2 Okayama 1 2 3 4 Hiroshima 1 2 3 4 5 6 Yamaguchi 1 2 3
Shikoku	Block 6 seats Tokushima 1 2 Kagawa 1 2 3 Ehime 1 2 3 Kōchi 1 2
Kyūshū	Block 20 seats Fukuoka 1 2 3 4 5 6 7 8 9 10 11 Saga 1 2 Nagasaki 1 2 3 Kumamoto 1 2 3 4 Ōita 1 2 3 Miyazaki 1 2 3 Kagoshima 1 2 3 4 Okinawa 1 2 3 4
Former districts	Abolished in 2002 Hokkaido 13 Yamagata 4 Shizuoka 9 Shimane 3 Oita 4 Abolished in 2013 Fukui 3 Yamanashi 3 Tokushima 3 Kochi 3 Saga 3 Abolished in 2017 Aomori 4 Iwate 4 Mie 5 Nara 4 Kumamoto 5 Kagoshima 5 Abolished in 2022 Miyagi 6 Fukushima 5 Niigata 6 Shiga 4 Wakayama 3 Okayama 5 Hiroshima 7 Yamaguchi 4 Ehime 4 Nagasaki 4

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