Yamaguchi 4th district

Yamaguchi 4th district (山口県第4区 Yamaguchi-ken dai-yon-ku) is a single-member electoral district for the House of Representatives, the lower house of the National Diet of Japan. It is located in Western Yamaguchi and consists of the cities of Shimonoseki and Nagato. The seat was held by former Prime Minister of Japan Shinzo Abe until his assassination in July 2022. As of September 2011, 266,456 voters were registered in the district, giving its voters well above average (347,878 voters per district) vote weight.^[2] Unlike many prefectures where the capital is also the most populous city, Yamaguchi's major city is Shimonoseki, located at the western tip of Honshū and adjacent to Kyushu island's Fukuoka-Kitakyūshū metropolitan area which lies just south across the Kanmon Straits.

Yamaguchi 4th District
Parliamentary constituency for the Japanese House of Representatives
Numbered map of Yamaguchi Prefecture single-member districts
Prefecture	Yamaguchi
Proportional District	Chūgoku
Electorate	256,464 (2017)[1]
Major settlements	Shimonoseki and Nagato
Current constituency
Created	1996
Party	LDP
Representative	Shinji Yoshida

Yamaguchi is home to the Kan Abe - Nobusuke Kishi-Shintarō Abe (non-prime minister, father of Shinzo Abe)-Eisaku Satō prime ministerial family whose members have represented the prefecture in the Diet for much of the postwar era and the Giichi Tanaka prime ministerial family that produced its first two elected governors. Western Yamaguchi formed the four-member 1st district until the electoral reform of the 1990s, its representatives included Shintarō Abe, Shinzō Abe (former Prime Minister of Japan) and Tatsuo Tanaka, but also other prominent conservatives such as finance minister Yoshirō Hayashi or Takeo Kawamura who went on to become Chief Cabinet Secretary in the 2000s.

The Liberal Democratic Party (LDP) usually won the district three seats to one. In the electoral reform, the 1st district was split up into the single-member 3rd and 4th districts. In the first post-reform election of 1996, the 4th district was contested by Shinzō Abe and Takaaki Koga, himself a former Liberal Democrat who in 1993 took the opposition seat in the 1st district from the Socialists for the Renewal Party. But Abe won, and easily held onto the seat from then on. He was elected LDP president and Prime Minister in 2006 against Tarō Asō and Sadakazu Tanigaki in succession to Junichiro Koizumi (Kanagawa 11th district), but resigned after one year.

In 2012, the party – in opposition since 2009 – once more elected Shinzo Abe as the third LDP president not to become prime minister immediately after his election. Abe then subsequently won the 2012 general election in a landslide victory against the DPJ of Yoshihiko Noda (Chiba 4th district), returning the LDP to power (with coalition partner New Komeito, the LDP have a two-thirds majority and can break a deadlock in the National Diet) and became prime minister again.

List of representatives

Member	Party	Dates	Electoral history	Notes
Shinzo Abe	Liberal Democratic	20 October 1996 – 8 July 2022	Elected in 1996. Re-elected in 2000. Re-elected in 2003. Re-elected in 2005. Re-elected in 2009. Re-elected in 2012. Re-elected in 2014. Re-elected in 2017. Re-elected in 2021. Assassinated.	Chief Cabinet Secretary (2005–2006) Prime Minister of Japan (2006–2007; 2012–2020)
Vacant		8 July 2022 – 24 April 2023
Shinji Yoshida	Liberal Democratic	25 April 2023 – present	Elected to finish Abe's term.

Election results

2023^[3]

Party		Candidate	Votes	%	±%
	LDP	Shinji Yoshida	51,961	63.5	6.2
	CDP	Yoshifu Arita	25,595	31.3
	Independent	Yoriko Ohno	2,381	2.9	10.8
	Seijika Joshi	Ai Watanabe	1,186	1.4
	Independent	Hideyuki Takemoto	734	0.9
Turnout			81857	34.71	13.93
	LDP hold

2021

Party		Candidate	Votes	%	±%
	LDP	Shinzō Abe	80,448	69.7	2.9
	Reiwa	Katsushi Takemura	19,096	16.6	New
	Independent	Yoriko Ohno	15,836	13.7	New
Margin of victory			61,352	53.17	5.23
Turnout			115,380	48.64	8.95
	LDP hold		Swing	2.9

2017^[4]

Party		Candidate	Votes	%	±%
	LDP	Shinzō Abe	104,825	72.6	3.7
	Kibo	Fujita Tokioo	18,567	12.9	New
	JCP	Hiroaki Nishioka	13,721	9.5	3.6
	Independent	Kurotawa Atsuhiko	6,687	4.6	New
	Independent	Akihiro County	645	0.4	New
Margin of victory			86,258	58.40	4.74
Turnout			147,702	57.59	5.03
	LDP hold		Swing	3.7

2014^[4]

Party		Candidate	Votes	%	±%
	LDP	Shinzō Abe	100,829	76.3	1.9
	JCP	Sadayoshi Yoshida	17,358	13.1	4.0
	Independent - PLP	Toshie Watanabe	14,018	10.6	New
Margin of victory			83,471	63.14	2.29
Turnout			132,205	52.56	6.89
	LDP hold		Swing	1.9

2012^[5]

Party		Candidate	Votes	%	±%
	LDP[6]	Shinzō Abe	118,696	78.2	13.9
	DPJ	Shintarō Zaima	19,336	12.7	18.4
	JCP	Norio Higaki	13,815	9.1	4.5
Margin of victory			99,360	65.43	31.7
Turnout			151,847	59.45	11.6
	LDP hold		Swing	13.9

2009^[7]

Party		Candidate	Votes	%	±%
	LDP	Shinzō Abe	121,365	64.3	9.3
	DPJ – PNP	Takako Tokura	58,795	31.1	11.4
	JCP	Daisuke Kisaki	8,725	4.6	2.1
Margin of victory			62,570	32.73	20.34
Turnout			191,199	71.05	2.11
	LDP hold		Swing	9.3

2005^[8]

Party		Candidate	Votes	%	±%
	LDP	Shinzō Abe	137,701	73.6	6.1
	DPJ	Takashi Katō	36,847	19.7	19.9
	JCP	Daisuke Kisaki	12,499	6.7	1.5
Margin of victory			100,854	53.07	13.11
Turnout			190,032	68.94	3.93
	LDP hold		Swing	6.1

2003^[9]

Party		Candidate	Votes	%	±%
	LDP	Shinzō Abe	140,347	79.7	8.0
	SDP	Jun'ichirō Kojima	21,202	12.0	12.0
	JCP	Hiroshi Ikenoue	14,438	8.2	20.1
Margin of victory			119,145	66.18	22.76
Turnout			180,044	65.01	0.03
	LDP hold		Swing	8.0

2000^[10]

Party		Candidate	Votes	%	±%
	LDP	Shinzō Abe	121,835	71.7	17.4
	JCP	Hiroshi Ikenoue	48,068	28.3	17.3
Margin of victory			73,767	43.42	24.23
Turnout			169,903	65.04	1.72
	LDP hold		Swing	17.4

1996^[11]

Party		Candidate	Votes	%	±%
	LDP	Shinzō Abe	93,459	54.3	New
	NFP	Takaaki Koga	59,676	34.7	New
	JCP	Hiroshi Ikenoue	18,853	11.0	New
Margin of victory			33,783	19.19	−
Turnout			176,042	63.32	−

References

1. "衆議院小選挙区 - 確定投票状況" [House of Representatives election district - Fixed Vote Status]. Yamaguchi Prefecture Election Commission (in Japanese). 2017.
2. Ministry of Internal Affairs and Communications (Sōmu-shō, lit. "Ministry of general affairs"): 平成２３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
3. <衆院補選 山口４区 (in Japanese). NHK. Retrieved 6 May 2023.
4. Asahai Shimbun: election results in Yamaguchi's single-member districts
5. 第46回衆議院議員選挙 - 山口4区. ザ･選挙 (The Senkyo, lit. "The Election[s]", a website about elections in Japan with an election results database covering all national elections since 1890 and recent prefectural and municipal elections; originally created by citizen online newspaper JANJAN and resold twice) (in Japanese). Heartbeats Corp. Archived from the original on 2016-03-04. Retrieved 2012-12-19. {{cite web}}: External link in |work= (help)
6. Yomiuri Shimbun: election results in Yamaguchi's single-member districts Archived 2016-12-02 at the Wayback Machine
7. 第45回衆議院議員選挙 - 山口4区. ザ･選挙 (in Japanese). Heartbeats Corp. Archived from the original on 2016-03-04. Retrieved 2012-11-19. {{cite web}}: External link in |work= (help)
8. 第44回衆議院議員選挙 - 山口4区. ザ･選挙 (in Japanese). Heartbeats Corp. Archived from the original on 2016-03-03. Retrieved 2012-11-19. {{cite web}}: External link in |work= (help)
9. 第43回衆議院議員選挙 - 山口4区. ザ･選挙 (in Japanese). Heartbeats Corp. Archived from the original on 2016-03-03. Retrieved 2012-11-19. {{cite web}}: External link in |work= (help)
10. 第42回衆議院議員選挙 - 山口4区. ザ･選挙 (in Japanese). Heartbeats Corp. Archived from the original on 2016-03-04. Retrieved 2012-11-19. {{cite web}}: External link in |work= (help)
11. 第41回衆議院議員選挙 - 山口4区. ザ･選挙 (in Japanese). Heartbeats Corp. Archived from the original on 2016-03-04. Retrieved 2012-11-19. {{cite web}}: External link in |work= (help)

House of Representatives (Japan)
Preceded by Kanagawa 11th district	Constituency represented by the prime minister 2006–2007	Succeeded by Gunma 4th district
Preceded by Chiba 4th district	Constituency represented by the prime minister 2012 – 2020	Succeeded by Kanagawa 2nd district