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2022 Japanese House of Councillors election

← 2019 10 July 2022 2025 →
124 of the 248 seats in theHouse of Councillors 125 seats needed for a majority
Opinion polls
Registered	105,019,203 (0.86%)
Turnout	52.05% (3.25pp; Const. votes) 52.04% (3.25pp; National votes)
First party Second party Third party   Leader Fumio Kishida Kenta Izumi Natsuo Yamaguchi Party LDP CDP Komeito Last election 113 seats 32 seats 28 seats Seats after 119 39 27 Seat change 6 7 1 Constituency vote 20,603,298 8,154,330 3,600,490 % and swing 38.74% (1.03pp) 15.33% (0.46pp) 6.77% (1.00pp) National vote 18,256,245 6,771,914 6,181,432 % and swing 34.43% (0.94pp) 12.77% (3.04pp) 11.66% (1.39pp)   Fourth party Fifth party Sixth party   Leader Ichiro Matsui Kazuo Shii Yuichiro Tamaki Party Ishin JCP DPP Last election 16 seats 13 seats 13 seats Seats after 21 11 11 Seat change 5 2 2 Constituency vote 5,533,657 3,636,534 2,038,655 % and swing 10.41% (3.13pp) 6.82% (0.55pp) 3.83% (3.12pp) National vote 7,845,995 3,618,343 3,159,657 % and swing 14.80% (5.00pp) 6.84% (2.11pp) 5.96% (0.51pp)   Seventh party Eighth party Ninth party   Leader Tarō Yamamoto Takashi Tachibana Manabu Matsuda Party Reiwa Anti-NHK Sanseitō Last election 2 seats 1 seat Did not exist Seats after 5 2 1 Seat change 3 1 New Constituency vote 989,716 1,106,508 2,018,215 % and swing 1.86% (1.43pp) 2.08% (0.94pp) 3.80% (New) National vote 2,319,157 1,253,872 1,768,385 % and swing 4.37% (0.18pp) 2.36% (0.39pp) 3.33% (New)
Results by constituency
President before election Akiko Santō LDP ElectedPresident Hidehisa Otsuji LDP

House of Councillors elections were held inJapan on 10 July 2022 to elect 125 of the 248 members of theupper house of theNational Diet, for a term of six years.^[1] The elected candidate with the fewest votes in the Kanagawa prefectural district will serve for three years, as the district combined its regular and byelections.^[2]

The elections occurred within the first year of premiership ofFumio Kishida,President of theLiberal Democratic Party and it sawKenta Izumi debut as the Leader of the oppositionConstitutional Democratic Party. The election was overshadowed by theassassination of former Prime MinisterShinzo Abe (served 2006–2007 and 2012–2020) which led the anti-government protests and riots, which took place two days before ballots were cast.^[3] Abe was shot while delivering a campaign speech forKei Satō, a member of the House of Councillors running for reelection. The assassin, who had previously served in theJapan Maritime Self-Defence Force, was arrested at the scene and reportedly confessed to targeting Abe due to a grudge he held against theUnification Church. Prime Minister Kishida denounced the assassination as an attack on Japan's democracy and vowed to defend a "free and fair election at all cost".^[4] In a post-election survey, 62.5 percent of the voters said their votes were not swayed by the assassination, while 15.1 percent said they were.^[5]

The governingLiberal Democratic Party modestly increased its seats in the chamber.^[6] Turnout slightly increased compared to the previous election^[7] while a new record was set for women elected to the chamber at 28%.^[8] Parties supportive of constitutional revision gained a combined total of 93 seats, thus gaining the two-thirds majority needed to trigger the parliamentary procedure which was lost in the2019 election.^[9]

The disparity in the value of a vote between prefectural districts in the election ranged up to 3.03 times, leading to nationwide legal challenges.^[10]

Following the closing of the 208th session of theNational Diet on 15 June 2022, theSecond Kishida Cabinet held an extraordinary session to schedule an upper house election in which it was determined that the election would be formally announced to the public on June 22 with the vote to be held on 10 July 2022.^[11]

In May 2018, the government enacted a revision to the Public Offices Election Law that increased the number of seats in the House of Councillors by six, with three new seats being contested in2019 and the other three being contested in 2022. As such, three new seats — one in theSaitama at-large district and two in thenational PR block — were added to the House of Councillors as a result of the election.^[12][13]

A seat in theKanagawa at-large district was left vacant following the resignation ofShigefumi Matsuzawa (independent), who was elected to the House of Councillors in the 2019 election. Matsuzawa resigned from his seat in the House of Councillors to run in the2021 Yokohama mayoral election, for which he came in fifth.^[14][15][16] Since the seat was not eligible for aby-election, a merger election was held as a part of this election. This was the first time in 30 years - since theSaitama at-large district held one as part of the1992 election - that a merger election was held. As a result, the Kanagawa at-large district elected five members this election instead of four, with the fifth-place winner serving for only three years instead of six.^[17] Furthermore, in October 2021,Kenji Nakanishi (Liberal Democratic), who was elected to the House of Councillors from the Kanagawa at-large district in the2016 election, resigned his seat to compete in the2021 Japanese general election for a seat in theHouse of Representatives, leaving his seat in the House of Councillors vacant prior to this election as well.^[18]

The "Special Postal Voting" system - put in place by the Corona Postal Voting Act passed in response to the globalCOVID-19 pandemic - was still in effect during this election. This system secured voting opportunities for those who could not vote in-person due to the pandemic. It was the first time the "Special Postal Voting" system was used for a House of Councillors election.^[19] In addition, a revision to the Public Offices Election Act was passed in April 2022 that allowed forparty political broadcasts to be made throughFM broadcasting.^[20]

On 8 July 2022, former Prime MinisterShinzo Abe (served 2006–2007 and 2012–2020) wasassassinated inNara City while delivering a campaign speech forKei Satō, a member of the House of Councillors running for reelection. The assassination took place just two days before the election.^[3] In response, some candidates from the Liberal Democratic Party and other political parties canceled their campaign events on that day.^[21][22] Prime Minister Kishida denounced the assassination as an attack on Japan's democracy and vowed to defend a "free and fair election at all cost".^[4] In a post-election survey, 62.5 percent of the voters said their votes were not swayed by the assassination, while 15.1 percent said they were.^[5]

At 20:00 (8pm)JST on July 10, when the voting ended, various media outlets across Japan - includingNHK and Japan's five major commercial broadcasting networks (Nippon TV,TV Asahi,TBS TV,TV Tokyo, andFuji TV) - all reported the results of theexit poll all at once. It was reported that the ruling Liberal Democratic Party and their coalition partnerKomeito won significantly more seats than was needed for a majority, while the opposition parties of theConstitutional Democratic Party,Democratic Party For the People, and theJapanese Communist Party all lost seats. In addition, theJapan Innovation Party (also known as the Innovation Party or the Restoration Party) was also projected to gain seats, and the exit poll projected that several independents would acquire seats as well.^[23][24]

TheDemocratic Party For the People had been described as "cozying up" to the Liberal Democratic Party (LDP).^[25] The lack of policy agreements and electoral pacts led to more opposition candidates contesting in single-seat prefectural districts.^[26][27]

75 members were elected bysingle non-transferable vote (SNTV) andfirst-past-the-post (FPTP) voting in 45 multi-member and single-member prefectural electoral districts. Thenationwide district elected 50 members byD'Hondt proportional representation with optionallyopen lists; the previous most open list system was modified in 2018 to give parties the option to prioritize certain candidates over the voters' preferences in the proportional election.^[28][29]

The rulingLiberal Democratic Party modestly increased its seats in the chamber.^[6] Turnout slightly increased compared to the previous election^[7] while a new record was set for women elected to the chamber at 28%.^[8][30]。

Parties supportive of constitutional revision (Liberal Democratic Party,Komeito,Japan Innovation Party, andDemocratic Party For the People) won a combined total of 93 seats, and maintained the two-thirds majority needed to trigger the parliamentary procedure.^[9] Sanseito and NHK Party, with three seats combined, are also in favour of rewriting the Constitution.^[31][32]

The disparity in the value of a vote between prefectural districts in the election ranged up to 3.03 times (with a vote inKanagawa Prefecture having only one-third the impact of a vote inFukui Prefecture), leading to nationwide legal challenges. The Supreme Court had previously concluded after Upper House elections in 2010 and 2013 that a maximum vote-weight disparity of around 5 times was in a "state of unconstitutionality", with the current disparity coming somewhat close to that number. Prefectures have been resistant to combining electoral districts within their boundaries.^[10]

Party		National			Constituency			Seats
		Votes	%	Seats	Votes	%	Seats	Won	Not up	Total after	+/–
	Liberal Democratic Party	18,256,245	34.43	18	20,603,298	38.74	45	63	56	119	+6
	Japan Innovation Party	7,845,995	14.80	8	5,533,657	10.41	4	12	9	21	+5
	Constitutional Democratic Party	6,771,914	12.77	7	8,154,330	15.33	10	17	22	39	+7
	Komeito	6,181,432	11.66	6	3,600,490	6.77	7	13	14	27	–1
	Japanese Communist Party	3,618,343	6.82	3	3,636,534	6.84	1	4	7	11	–2
	Democratic Party For the People	3,159,657	5.96	3	2,038,655	3.83	2	5	5	10	New
	Reiwa Shinsengumi	2,319,157	4.37	2	989,716	1.86	1	3	2	5	+3
	Sanseitō	1,768,385	3.33	1	2,018,215	3.80	0	1	0	1	New
	Social Democratic Party	1,258,502	2.37	1	178,911	0.34	0	1	0	1	–1
	NHK Party	1,253,872	2.36	1	1,106,508	2.08	0	1	1	2	+1
	Burdock Party [ja]	193,724	0.37	0				0	0	0	New
	Happiness Realization Party	148,020	0.28	0	134,718	0.25	0	0	0	0	0
	Japan First Party	109,046	0.21	0	74,097	0.14	0	0	0	0	New
	Kunimori Conservative Party	77,861	0.15	0	111,956	0.21	0	0	0	0	New
	Ishin Seito Shimpu	65,107	0.12	0	204,102	0.38	0	0	0	0	New
	First no Kai				284,629	0.54	0	0	0	0	New
	Children's Party				50,662	0.10	0	0	0	0	New
	Japan Reform Party				46,641	0.09	0	0	0	0	New
	Kyowa Party				41,014	0.08	0	0	0	0	New
	Free Republican Party				33,636	0.06	0	0	0	0	New
	Metaverse Party				19,100	0.04	0	0	0	0	New
	Party to Realize Bright Japan with a Female Emperor				10,268	0.02	0	0	0	0	New
	Smile Japan Party				5,409	0.01	0	0	0	0	New
	Party to Know the Truth of Renewable Energy				3,868	0.01	0	0	0	0	New
	Peace Party				3,559	0.01	0	0	0	0	New
	Tenmei Party				3,283	0.01	0	0	0	0	New
	Party to take over U.S. military base in Okinawa to Tokyo				3,043	0.01	0	0	0	0	New
	Wake Up the Japanese Party				2,440	0.00	0	0	0	0	New
	Nuclear Fusion Party				1,913	0.00	0	0	0	0	New
	Independents				4,285,360	8.06	5	5	7	12	–5
Total		53,027,260	100.00	50	53,180,012	100.00	75	125	123	248	0
Valid votes		53,027,260	97.02		53,180,012	97.29
Invalid/blank votes		1,626,202	2.98		1,479,020	2.71
Total votes		54,653,462	100.00		54,659,032	100.00
Registered voters/turnout		105,019,203	52.04		105,019,203	52.05
Source:Ministry of Internal Affairs and Communications

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