Osaka 17th district

Ōsaka 17th district (大阪府第17区, Ōsaka-fu daijuunanaku or 大阪17区, Ōsaka-juunanaku) is a single-member electoral district of the House of Representatives, the lower house of the national Diet of Japan. It is located in Sakai City in Osaka Prefecture and comprises the Southern (Minami-ku), Central (Naka-ku) and Western (Nishi-ku) wards of the city. As of 2023, 326,570 eligible voters were registered in the district.^[1]

Osaka 17th District
Parliamentary constituency for the Japanese House of Representatives
Numbered map of Osaka Prefecture single-member districts
Prefecture	Osaka
Proportional District	Kinki
Electorate	326,570 (as of 1 September 2023)
Current constituency
Created	1994
Seats	1
Party	Ishin
Representative	Nobuyuki Baba
Created from	Osaka's 5th "medium-sized" district
Municipalities	Minami-ku, Naka-ku, and Nishi-ku of Sakai City

The current representative is Nobuyuki Baba, the leader of the "Japan Innovation Party" (Nippon Ishin no Kai).

Before the electoral reform of the 1990s, the area had been part of the five-member Osaka 5th district.

List of representatives

Representative	Party		Dates	Notes
Shingo Nishimura		NFP	1996 – 2000
Nobuko Okashita		LDP	2000 – 2003
Shingo Nishimura		DPJ	2003 – 2005
Nobuko Okashita		LDP	2005 – 2009
Megumu Tsuji		DPJ	2009 – 2012
Nobuyuki Baba		Restoration	2012 – 2014	Former member of the Sakai City Council
		Innovation	2014 – 2016
		Ishin	2016 –

Election results

2024^[2]

Party		Candidate	Votes	%	±%
	Ishin	Nobuyuki Baba	82,234	52.3	1.3
	LDP	Shōhei Okashita (endorsed by Kōmeitō)	45,904	29.2	2.6
	JCP	Kumiko Sawada	29,130	18.5	3.9
Turnout				50.55	3.95
	Ishin hold

2021^[3]

Party		Candidate	Votes	%	±%
	Ishin	Nobuyuki Baba	94,398	53.60	10.07
	LDP	Shōhei Okashita (endorsed by Kōmeitō)	66,943	31.83	7.12
	JCP	Mori Ryūsei (endorsed by Social Democratic Party)	25,660	14.57	2.95
Majority			27,455	15.59
Turnout				54.50	8.88
	Ishin hold

2017^[4]

Party		Candidate	Votes	%	±%
	Ishin	Nobuyuki Baba	65,427	43.53	0.19
	LDP	Shōhei Okashita (elected by PR, endorsed by Kōmeitō)	58,534	38.95	0.42
	JCP	Sachiko Fujimoto	26,337	17.52	0.61
Majority			6,893	4.59
Turnout				45.62	4.28
	Ishin hold

2014^[5]

Party		Candidate	Votes	%	±%
	Ishin	Nobuyuki Baba	70,196	43.72	0.50
	LDP	Shōhei Okashita (elected by PR, endorsed by Kōmeitō)	63,219	39.37
	JCP	Takayoshi Yoshioka	27,151	16.91	8.17
Majority			6,977	4.35
Turnout				52.66	6.66
	Ishin hold

2012^[6]

Party		Candidate	Votes	%	±%
	Restoration	Nobuyuki Baba	81,663	44.22	New
	LDP	Nobuko Okashita	52,634	28.50	1.77
	Democratic	Satoshi Nishi (endorsed by PNP)	19,895	10.77	32.34
	JCP	Takayoshi Yoshioka	16,144	8.74	0.83
	Tomorrow	Megumu Tsuji (endorsed by NPD)	14,706	7.48	1.01
	Independent	Kusumi Okuda	2,778	1.50	N/A
Majority			29,029	15.46
Turnout
	Restoration gain from Democratic

2009^[7]

Party		Candidate	Votes	%	±%
	Democratic	Megumu Tsuji	92,666	43.11	0.55
	LDP	Nobuko Okashita	65,054	30.27	13.00
	New Renaissance	Shingo Nishimura	36,605	17.05	New
	JCP	Joji Sakamoto	20,560	9.57	2.66
Majority			27,612	12.85
Turnout
	Democratic gain from LDP

2005

Party		Candidate	Votes	%	±%
	LDP	Nobuko Okashita	90,765	43.27	13.11
	Democratic	Shingo Nishimura (elected by PR)	89,279	42.56	2.25
	JCP	Minoru Manabe	29,732	14.17	0.97
Majority			1,486	0.71
Turnout
	LDP gain from Democratic

2003

Party		Candidate	Votes	%	±%
	Democratic	Shingo Nishimura	69,861	40.31	19.58
	LDP	Nobuko Okashita	52,258	30.16	6.65
	JCP	Minoru Manabe	26,236	15.14	5.59
	Independent	Takaaki Hirata	24,937	14.39	1.47
Majority			17,603	10.16
Turnout
	Democratic gain from LDP

2000

Party		Candidate	Votes	%	±%
	LDP	Nobuko Okashita	41,781	23.51	0.29
	JCP	Minoru Manabe	36,834	20.73	9.63
	Democratic	Motoyuki Odachi	33,392	18.79	New
	Liberal	Shingo Nishimura (elected by PR)	28,345	15.95	26.74
	Independent	Takaaki Hirata	28,184	15.86	New
	Social Democratic	Ryutaro Nakakita	9,190	5.17	New
Majority			4,947	2.78
Turnout
	LDP gain from New Frontier

1996

Party		Candidate	Votes	%	±%
	New Frontier	Shingo Nishimura	72,359	42.69
	JCP	Sumi Fujita (elected by PR}	51,454	30.36
	LDP	Masahiro Okashita	40,337	23.80
	Liberal League	Kusumi Okuda	5,329	3.14
Majority			20,905	12.33
Turnout

References

1. "令和5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 2023]. Ministry of Internal Affairs and Communications (in Japanese). Retrieved 2023-11-03.
2. 小選挙区開票速報：大阪 (in Japanese). NHK. Retrieved 5 November 2024.
3. 小選挙区開票速報：大阪 (in Japanese). NHK. Retrieved 1 November 2021.
4. 小選挙区開票速報：大阪府（定数19） (in Japanese). Asahi Shimbun. Retrieved 10 December 2017.
5. 小選挙区：大阪府 - 開票速報 - 2014総選挙: 朝日新聞デジタル (in Japanese). Asahi Shimbun. Retrieved 10 December 2017.
6. 第46回総選挙>小選挙区開票速報：大阪府 (in Japanese). Asahi Shimbun. Retrieved 10 December 2017.
7. 小選挙区開票結果ー大阪府１７区 (in Japanese). Asahi Shimbun. Retrieved 10 December 2017.