Hokkaido 5th district

Hokkaidō 5th district (Hokkaidō [dai-]go-ku (北海道[第]5区)) is a constituency of the House of Representatives in the Diet of Japan. It consists of Atsubetsu ward and a portion of Shiroishi ward in Hokkaido's city of Sapporo and Ishikari Subprefecture excluding Sapporo and Ishikari city. As of 2009, 453,752 eligible voters were registered in the district.^[2]

Hokkaidō 5th District
Parliamentary constituency for the Japanese House of Representatives
Numbered map of Hokkaidō Prefecture single-member districts
Sapporo-area detail
Prefecture	Hokkaidō
Proportional District	Hokkaidō
Electorate	467,864 (2021)[1]
Current constituency
Created	1994
Seats	One
Party	CDP
Representative	Maki Ikeda
Created from	Hokkaido's 1st medium sized district [ja]
Municipalities	Sapporo's Atsubetsu Ward and Ishikari Subprefecture

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

Nobutaka Machimura (LDP, Machimura faction) safely won the new 5th district in the 1996 election and defended it against Democratic 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 the Hokkaidō 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 the 24 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 the 2024 election. Wada was accused of receiving 'dark money' in the 2023–2024 Japanese slush fund scandal. Subsequently, the LDP did not allow Wada to run in the Hokkaidō PR block and he lost his seat in the Diet.^[7]

List of representatives

Representative	Party		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 –

Election results

2024^[8]

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
	CDP gain from LDP

2021^[9]

Party		Candidate	Votes	%	±%
	LDP	Yoshiaki Wada (endorsed by Kōmeitō)	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
	LDP hold		Swing	3.99

2017^[10]

Party		Candidate	Votes	%	±%
	LDP	Yoshiaki Wada (endorsed by Kōmeitō and NPD)	142,687	49.84	2.54
	CDP	Maki Ikeda (elected by PR)	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
	LDP hold		Swing	1.21

House of Representatives: 2016 Hokkaido 5th district by-election^[11]

Party		Candidate	Votes	%	±%
	LDP	Yoshiaki Wada (endorsed by Kōmeitō, PFG, NPD)	135,842	52.38	1.43
	Independent	Maki Ikeda (endorsed by DP, 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
	LDP hold		Swing	N/A

2014^[12]

Party		Candidate	Votes	%	±%
	LDP	Nobutaka Machimura (endorsed by Kōmeitō)	131,394	50.95
	Democratic	Kenji Katsube	94,975	36.82
	JCP	Ryūji Suzuki	31,523	12.23
Turnout				58.43

2012^[13][14]

Party		Candidate	Votes	%	±%
	LDP	Nobutaka Machimura (endorsed by Kōmeitō)	128,435	48.62
	Democratic	Shigeyuki Nakamae	69,075	26.15
	Your	Yūji Nishida (endorsed by JRP)	41,025	15.53
	JCP	Ryūji Suzuki	21,422	8.11
	Happiness Realization	Yoshinori Moriyama	4,200	1.59

2010 by-election^[15]

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^[16]

Party		Candidate	Votes	%	±%
	Democratic	Chiyomi Kobayashi (endorsed by PNP)	182,952	53.8
	LDP	Nobutaka Machimura (endorsed by Kōmeitō) (elected by PR)	151,448	44.6
	Happiness Realization	Yasunori Hatano	5,380	1.6
Turnout			345,458	76.32

2005^[17]

Party		Candidate	Votes	%	±%
	LDP	Nobutaka Machimura (endorsed by Kōmeitō)	173,947	54.2
	Democratic	Chiyomi Kobayashi	124,547	38.8
	JCP	Takahiro Yamazaki	22,521	7.0
Turnout			325,642	73.18

2003^[18]

Party		Candidate	Votes	%	±%
	LDP	Nobutaka Machimura (endorsed by Kōmeitō, NCP)	129,035	47.0
	Democratic	Chiyomi Kobayashi (endorsed by SDP) (elected by PR)	120,192	43.7
	JCP	Satoshi Miyauchi	25,603	9.3
Turnout			280,993	64.06

2000^[19]

Party		Candidate	Votes	%	±%
	LDP	Nobutaka Machimura (endorsed by Kōmeitō, 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^[20]

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