Nagasaki at-large district

The Nagasaki at-large district (長崎県選挙区, Nagasaki-ken Senkyo-ku) is a constituency of the House of Councillors in the Diet of Japan. It consists of Nagasaki Prefecture and elects two Councillors, one every three years by a first-past-the-post system for a six-year term. In the first election in 1947, Nagasaki like all districts used single non-transferable vote to elect both its Councillors in one election. Similar to other small, rural Kyushu prefectures, it is a "conservative kingdom" in favor of the LDP. Since the Democratic Party folded, LDP candidates have consistently won with over 50% of the vote.

Nagasaki at-large district
長崎県選挙区
Parliamentary constituency for the House of Councillors
Prefecture	Nagasaki
Electorate	1,092,899 (as of September 2022)[1]
Current constituency
Created	1947
Seats	2
Councillors	Class of 2019:   Yuichiro Koga (LDP) Class of 2022:   Keisuke Yamamoto (LDP)

Single-member districts (ichinin-ku) for the House of Councillors often play a decisive role for the outcome of elections as little swing in votes is required to achieve a change of the Councillors elected there. Under the 1955 System Nagasaki voted consistently for conservative candidates until the landslide election of 1989 that led to a "twisted parliament" (nejire kokkai: opposition control of the House of Councillors). Following the party realignments of the 1990s when reformist conservative and liberal parties and ultimately the Democratic Party replaced the Socialists as the main opposition to the LDP, Nagasaki became a more closely contested potential swing district.

Elected Councillors

class of 1947	election year	class of 1950
#1 (1947: #1, 6-year term)		#1 (1947: #2, 3-year term)
Shigeo Fujino (Indep.)	1947[2]	Takeo Shimizu (JSP) †
	1948 by-el.[3]	Moriichi Kadoya (DP)
	1950[4]	Shun'ichirō Akiyama (LP)
Shigeo Fujino (Yoshida LP)	1953[5]
	1956[6]	Shun'ichirō Akiyama (LDP)
Shigeo Fujino (LDP)	1959[7]
	1962[8]	Kan'ichi Kubo (LDP) #
Naozō Taura (LDP) †	1965[9]
Tatsuhiko Tatsuta (JSP)	w/o vote[10]
	1968[11]
	1970 by-el.[12]	Takiichirō Hatsumura (LDP)
Teiji Nakamura (LDP)	1971[13]
	1974[14]
	1977[15]
	1980[16]
Hiroshi Miyajima (LDP)	1983[17]
	1986[18]
Toshiko Shinozaki (JSP)	1989[19]
	1992[20]	Sōichirō Matsutani (LDP)
Tadashi Taura (NFP)	1995[21]
	1998[22]
Tadashi Taura (LDP)	2001[23]
	2004[24]	Tadashi Inuzuka (DPJ)
Yukishige Ōkubo (DPJ)	2007[25]
	2010[26]	Genjirō Kaneko (LDP)
Yuichiro Koga (LDP)	2013[27]
	2016[28]
	2019[29]
	2022[30]	Keisuke Yamamoto (LDP)

#: resigned to contest the 1970 Nagasaki gubernatorial election; †: died in office

Election Results

2022^[30]

Party		Candidate	Votes	%	±%
	LDP	Keisuke Yamamoto (Endorsed by the Komeito)	261,554	50.1
	CDP	Ayumi Shirakawa (Endorsed by the SDP)	152,473	29.2
	Ishin	Mami Yamada	53,715	10.3
	JCP	Ayako Yasue	26,281	5.0
	Sanseitō	Ayako Ogata	21,363	4.1
	Anti-NHK	Kazuto Okuma	6,969	1.3
Turnout			522,355
	LDP hold

2019^[29]

Party		Candidate	Votes	%	±%
	LDP	Yuichiro Koga (Incumbent) (Endorsed by Komeito)	258,109	51.5
	Democratic Party for the People	Ayumi Shirakawa (Endorsed by the JCP and the SDP)	224,022	44.7
	Anti-NHK	Kotaro Kamiya	19,240	3.8
Turnout			501,371
	LDP hold

2016^[28]

Party		Candidate	Votes	%	±%
	LDP	Genjiro Kaneko (Incumbent)	336,612	52.9
	Democratic	Hideko Nishioka	285,743	44.9
	Happiness Realization	Masatoshi Enatsu	13,936	2.2
Turnout			636,291
	LDP hold

2013^[27]

Party		Candidate	Votes	%	±%
	LDP	Yuichiro Koga	359,805	59.2
	Democratic	Yukishige Okubo	186,402	30.7
	JCP	Toshihiko Haraguchi	45,683	7.5
	Happiness Realization	Kiyoto Yamada	15,586	2.6
Turnout			607,476
	LDP gain from Democratic

2010^[26]

Party		Candidate	Votes	%	±%
	LDP	Genjiro Kaneko	344,182	48.8
	Democratic	Tadashi Inuzuka (Incumbent)	272,043	38.6
	Your	Norihiko Nakashima	60,829	8.6
	JCP	Eiko Fuchise	28,614	4.0
Turnout			705,668
	LDP gain from Democratic

2007^[25]

Party		Candidate	Votes	%	±%
	Democratic	Yukishige Okubo	352,953	49.0
	LDP	Tadashi Komine	331,147	46.0
	JCP	Eiko Fuchise	35,837	5.0
Turnout			719,937
	Democratic gain from LDP

2004^[24]

Party		Candidate	Votes	%	±%
	Democratic	Tadashi Inuzuka	344,606	49.5
	LDP	Soichiro Matsutani (Incumbent)	303,723	43.7
	JCP	Toshihiko Haraguchi	47,457	6.8
Turnout			695,786
	Democratic gain from LDP

2001^[23]

Party		Candidate	Votes	%	±%
	LDP	Tadashi Taura	356,934	53.4
	Independent	Yuji Mitsuno	195,670	29.3
	Independent	Kotaro Tanaka	46,199	6.9
	JCP	Kimiko Ogawa	44,262	6.6
	Women's Party	Sachiko Matsumoto	25,265	3.8
Turnout			668,330
	LDP gain from New Frontier

1998^[22]

Party		Candidate	Votes	%	±%
	LDP	Soichiro Matsutani (Incumbent)	271,607	42.1
	Independent	Yuji Mitsuno	244,733	37.9
	JCP	Kieko Nishimura	84,646	13.1
	Liberal League	Kazuko Teraoka	44,807	6.9
Turnout			645,793
	LDP hold

1995^[21]

Party		Candidate	Votes	%	±%
	New Frontier	Tadashi Taura	174,017	30.6
	LDP	Daisuke Miyajima	165,387	29.1
	Independent	Kuro Matsuda	98,447	17.3
	Socialist	Ryuichi Sato	96,081	16.9
	JCP	Kieko Nishimura	34,032	6.0
Turnout			567,964
	New Frontier gain from Socialist

1992^[20]

Party		Candidate	Votes	%	±%
	LDP	Soichiro Matsutani	320,060	55.0
	Democratic Reform Party	Yuji Hagi	206,611	35.5
	JCP	Satoru Ishikawa	55,621	9.6
Turnout			582,292
	LDP hold

1989^[19]

Party		Candidate	Votes	%	±%
	Socialist	Toshiko Shinozaki	344,416	44.9
	LDP	Akira Miyajima	238,511	31.1
	Independent	Soichiro Matsutani	151,053	19.7
	JCP	Satoru Ishikawa	30,134	3.9
	Nihon Seinensha	Koichi Hachiya	3,835	0.5
Turnout			767,949
	Socialist gain from LDP

1986^[18]

Party		Candidate	Votes	%	±%
	LDP	Takichiro Hatsumara	409,065	49.2
	Socialist	Kai Hayami	200,385	24.1
	Independent	Goro Asada	174,896	21.0
	JCP	Yasushi Tanaka	47,113	5.7
Turnout			831,459
	LDP hold

1983^[17]

Party		Candidate	Votes	%	±%
	LDP	Akira Miyajima	325,733	55.9
	Socialist	Kenji Taguchi	210,483	36.1
	JCP	Yasushi Tanaka	46,136	7.9
Turnout			582,352
	LDP hold

1980^[16]

Party		Candidate	Votes	%	±%
	LDP	Takiichiro Hatsumura	452,561	58.3
	Socialist	Tatsuhiko Tatsuta	267,786	34.5
	JCP	Yasuo Furuki	55,376	7.1
Turnout			775,723

1977^[15]

Party		Candidate	Votes	%	±%
	LDP	Teiji Nakamura (Incumbent)	380,332	53.1
	Socialist	Tatsuhiko Tatsuta	295,478	41.2
	JCP	Yasuo Furuki	40,943	5.7
Turnout			716,303	72.6	−0.4
	LDP hold

1974^[14]

Party		Candidate	Votes	%	±%
	LDP	Takiichiro Hatsumara (Incumbent)	365,198	51.9	−2.7
	Socialist	Kenji Yamaguchi	198,713	28.2	−13.5
	Kōmeitō	Koreo Taniguchi	84,463	12.0	NEW
	JCP	Shinsuke Nakata	55,254	7.9	+5.8
	LDP hold

1971^[13]

Party		Candidate	Votes	%	±%
	LDP	Teiji Nakamura	298,099	52.4
	Socialist	Tatsuhiko Tatsuta (Incumbent)	242,715	42.6
	JCP	Kazuo Masumoto	28,433	5.0
Turnout			569,247	61.0	−9.7
	LDP gain from Socialist

1970 By-Election^[12]

Party		Candidate	Votes	%	±%
	LDP	Takiichiro Hatsumura	215,717	54.6
	Socialist	Masato Yoshinaga	164,816	41.7
	JCP	Kazu Masumoto	14,450	3.7
	Independent	Umeshige Yamagishi	14,686	2.1
Turnout			409,669
	LDP hold

1968^[11]

Party		Candidate	Votes	%	±%
	LDP	Kanichi Kubo	362,875	58.7
	Socialist	Kunito Abe	211,821	34.3
	JCP	Yasunobu Uchida	43,238	7.0
Turnout			617,934
	LDP hold

1965^[9]

Party		Candidate	Votes	%	±%
	LDP	Naozo Taura [note 1]	247,026	44.8
	Socialist	Tatsuhiko Tatsuta [note 1]	218,423	39.6
	Democratic Socialist	Yutaka Sano	50,290	9.1
	JCP	Hajime Miyamoto	22,930	4.2
	Japan New National Party	Hajime Hidaka	7,662	1.4
	Independent	Jiro Fujita	5,091	0.9
Turnout			551,422	65.6	−0.1
	LDP hold

1. Naozo Taura was elected in July 1965, however Taura died within 3 months of the election, so the second placed Tatsuhiko Tatsuta took the seat without a by-election

1962^[8]

Party		Candidate	Votes	%	±%
	LDP	Kanichi Kubo	320,911	55.7
	Socialist	Tatsuhiko Tatsuta	241,968	42.0
	JCP	Junjiro Fukuoka	13,755	2.4
Turnout			576,634
	LDP hold

1959^[7]

Party		Candidate	Votes	%	±%
	LDP	Shigeo Fujino (Incumbent)	259,224	48.4
	Socialist	Shigemitsu Nakamura	248,259	46.4
	JCP	Yutaka Miyajima	28,138	5.3
Turnout			535,621
	LDP hold

1956^[6]

Party		Candidate	Votes	%	±%
	LDP	Shunichiro Akiyama (Incumbent)	267,640	50.5
	Socialist	Shigemitsu Nakamura	242,355	45.7
	JCP	Masao Mori	20,069	3.8
Turnout			530,064
	LDP hold

1953^[5]

Party		Candidate	Votes	%	±%
	Liberal	Shigeo Fujino (Incumbent)	229,203	43.8
	Right Socialist	Tadao Shimokawa	212,689	40.7
	Kaishintō	Isamu Aoki	81,254	15.5
Turnout			523,146
	Liberal gain from Independent

1950^[4]

Party		Candidate	Votes	%	±%
	Liberal	Shunichiro Akiyama	225,963	43.0
	Independent	Tsuyoshi Kihara	163,831	31.2
	Independent	Hideo Marugame	135,588	25.8
Turnout			525,382
	Liberal gain from Democratic

1948 By-Election^[3]

Party		Candidate	Votes	%	±%
	Democratic	Seiichi Kadoya	133,314	43.9
	Liberal	Mansaku Fukuda	104,593	34.4
	Socialist	Fumio Tsuji	51,891	17.1
	Liberal	Shuzo Tsukamoto	13,944	4.6
Turnout			303,742
	Democratic gain from Socialist

1947^[2]

Party		Candidate	Votes	%	±%
	Independent	Shigeo Fujino	126,859	35.2
	Socialist	Takeo Shimizu	118,921	33.0
	Democratic	Soshichiro Tsukikawa	58,180	16.2
	Liberal	Kiyoshi Yokose	55,986	15.6
Turnout			359,946
	Independent win (new seat)
	Socialist win (new seat)

References

House of Councillors: Alphabetical list of former Councillors

1. "総務省｜令和4年9月1日現在選挙人名簿及び在外選挙人名簿登録者数" [Ministry of Internal Affairs and Communications - Number of registered voters as of 1 September 2022] (in Japanese). Retrieved 2023-01-04.
2. "参議院>第1回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2008-02-02. Retrieved 2011-02-09.
3. "参議院>第1回参議院議員補欠選挙". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2010-08-17. Retrieved 2011-02-09.
4. "長崎選挙区 - 第2回参議院議員選挙". Go2Senkyo.com (in Japanese). Retrieved 2022-12-28.
5. "参議院>第3回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2009-08-31. Retrieved 2011-02-09.
6. "長崎選挙区 - 第4回参議院議員選挙". Go2Senkyo.com (in Japanese). Retrieved 2022-12-28.
7. "参議院>第5回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2009-10-28. Retrieved 2011-02-09.
8. "参議院>第6回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2009-04-15. Retrieved 2011-02-09.
9. "参議院>第7回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2007-07-29. Retrieved 2011-02-09.
10. kuriage-tōsen: 2nd ranking Tatsuta was elected without vote because Taura had died within three months of the regular election.
11. "長崎選挙区 - 第8回参議院議員選挙". Go2Senkyo.com (in Japanese). Retrieved 2022-12-28.
12. "参議院>第8回参議院議員補欠選挙". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2010-08-17. Retrieved 2011-02-09.
13. "参議院>第9回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2009-08-28. Retrieved 2011-02-09.
14. "参議院>第10回参議院議員選挙>長崎選挙区". go2senkyo.com (in Japanese). Retrieved 2022-12-28.
15. "参議院>第11回参議院議員選挙>長崎選挙区". Go2Senkyo.com (in Japanese). Retrieved 2022-12-28.
16. "参議院>第12回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2009-08-31. Retrieved 2011-02-09.
17. "参議院>第13回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2009-08-28. Retrieved 2011-02-09.
18. "長崎選挙区 - 第14回参議院議員選挙". Go2Senkyo.com (in Japanese). Retrieved 2022-12-28.
19. "参議院>第15回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2010-06-28. Retrieved 2011-02-09.
20. "参議院>第16回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2010-04-08. Retrieved 2011-02-09.
21. "参議院>第17回参議院議員選挙>長崎選挙区". Go2Senkyo.com (in Japanese). Retrieved 2022-12-28.
22. "参議院>第18回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2009-08-17. Retrieved 2011-02-09.
23. "参議院>第19回参議院議員選挙>長崎選挙区". Go2Senkyo.com (in Japanese). Retrieved 2022-12-28.
24. "参議院>第20回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2009-07-02. Retrieved 2011-02-09.
25. "参議院>第21回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2007-11-27. Retrieved 2011-02-09.
26. "参議院>第22回参議院議員選挙>長崎選挙区". ザ･選挙 (in Japanese). JANJAN. Archived from the original on 2010-08-14. Retrieved 2011-02-09.
27. "選挙区 長崎 選挙結果 参議院選挙（参院選）2013" [Nagasaki At-large district election results, 2013 House of Councillors election]. Yomiuri Shimbun. Retrieved 7 April 2016.
28. "長崎選挙区 - 第24回参議院議員選挙（参議院議員通常選挙）2016年07月10日投票 ｜ 選挙ドットコム". 選挙ドットコム (in Japanese). Retrieved 2022-12-23.
29. "長崎選挙区 - 第25回参議院議員選挙（参議院議員通常選挙）2019年07月21日投票 ｜ 選挙ドットコム". 選挙ドットコム (in Japanese). Retrieved 2022-12-23.
30. "長崎選挙区 - 第26回参議院議員選挙（参議院議員通常選挙）2022年07月10日投票 ｜ 選挙ドットコム". 選挙ドットコム (in Japanese). Retrieved 2022-12-23.