1930 Japanese general election

20 February 1930
All 466 seats in the House of Representatives 234 seats needed for a majority
Turnout	82.29% (1.96pp)
First party Second party Third party   130x130px 130x130px Leader Osachi Hamaguchi Tsuyoshi Inukai Mutou Sanji Party Constitutional Democratic Party (Japan) Seiyūkai Kokumin Doshikai Leader's seat Kōchi 1st Okayama 2nd Ōsaka-2 Last election 216 seats 217 seats 4 seats Seats won 273 174 6 Seat change 57 43 2 Popular vote 5,466,908 3,925,280 128,505 Percentage 52.48% 37.69% 1.23% Swing 9.34pp 5.37pp 0.46pp   Fourth party Fifth party Sixth party   130x130px KST 130x130px Leader Abe Isoo Aso Hisashi Party Shakai Minshūtō Kakushintō Japan Masses Party Leader's seat Tōkyō-2 Tōkyō-5 (lost) Last election 4 seats 3 seats New party Seats won 2 3 2 Seat change 2 New party Popular vote 173,458 55,487 158,074 Percentage 1.67% 0.53% 1.52% Swing 0.45pp 0.30pp New party   Seventh party   130x130px Leader Oyama Ikuo Party Rōnōtaishūtō Leader's seat Tōkyō-5 Last election New party Seats won 1 Seat change New party Popular vote 92,519 Percentage 0.89% Swing New party
400px
Prime Minister before election Hamaguchi Osachi Constitutional Democratic Party (Japan) Prime Minister after election Hamaguchi Osachi Constitutional Democratic Party (Japan)

General elections were held in Japan on 20 February 1930. The Constitutional Democratic Party, which was led by Prime Minister Hamaguchi Osachi, won an overall majority in the House of Representatives. Voter turnout was 82%.

Results

By prefecture

Prefecture	Total seats	Seats won
		RM	RS	KD	K	SDP	JMP	L-FMP	Ind.
Aichi	17	11	6
Akita	7	5	2
Aomori	6	3	3
Chiba	11	7	4
Ehime	9	6	3
Fukui	5	3	2
Fukuoka	18	9	8				1
Fukushima	11	8	3
Gifu	9	5	4
Gunma	9	6	3
Hiroshima	13	8	5
Hokkaido	20	11	8						1
Hyōgo	19	10	6	1	1				1
Ibaraki	11	8	3
Ishikawa	6	4	2
Iwate	7	2	5
Kagawa	6	3	3
Kagoshima	12	3	9
Kanagawa	11	6	4			1
Kōchi	6	4	2
Kumamoto	10	6	4
Kyoto	11	7	3	1
Mie	9	6	2						1
Miyagi	8	3	5
Miyazaki	5	4	1
Nagano	13	9	4
Nagasaki	9	5	4
Nara	5	4	1
Niigata	15	9	5		1
Ōita	7	5	2
Okayama	10	4	6
Okinawa	5	4	1
Osaka	21	14	4	2		1
Saga	6	4	2
Saitama	11	6	5
Shiga	5	3	1	1
Shimane	6	5	1
Shizuoka	13	7	4	1					1
Tochigi	9	5	4
Tokushima	6	4	2
Tokyo	31	17	10		1		1	1	1
Tottori	4	3	1
Toyama	6	4	2
Wakayama	6	4	2
Yamagata	8	4	4
Yamaguchi	9	3	6
Yamanashi	5	2	3
Total	466	273	174	6	3	2	2	1	5