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The Japanese political process has three types of elections: general elections to the House of Representatives held every four years (unless the lower house is dissolved earlier), elections to the House of Councillors held every three years to choose half of its members,and local elections held every four years for offices in prefectures and municipalities. Elections are supervised by Election Administration Commissions at each administrative level under the general direction of the Central Election Management Council, an extraordinary organ attached to the Ministry of Internal Affairs and Communications (MIC). The minimum voting age in Japan's non-compulsory electoral system was reduced from twenty to eighteen years in June 2016. Voters must satisfy a three-month residency requirement before being allowed to cast a ballot.
For those seeking offices, there are two sets of age requirements: twenty-five years of age for admission to the House of Representatives and most local offices, and thirty years of age for admission to the House of Councillors and the prefectural governorship.Each deposit for candidacy for national election is 3 million yen (about 27 thousand dollars) for a single-seat constituency and 6 million yen (about 54 thousand dollars) for proportional representation.
Japan's postwar national legislature, the National Diet (国会, Kokkai), has two directly elected chambers, elected on independent electoral cycles:
General elections of members of the House of Representatives (衆議院議員総選挙, Shūgi-in giin sō-senkyo) are usually held before the end of a four-year term as the chamber may be dissolved by the cabinet via the Emperor. Most prime ministers use that option. The only exception in post-war history was the "Lockheed Election" of 1976 in which the Liberal Democratic Party lost its seat majority for the first time.
The single-seat constituencies are decided by plurality, and the proportional seats are handed out in each "block" constituency to party lists proportionally (by the D'Hondt method) to their share of the vote. dual candidacies (重複立候補, chōfuku rikkōho) of one candidate in both tiers simultaneously are allowed. If such dual candidates lose in the majoritarian tier, they still have a chance to be elected in the proportional block. Parties may also place dual district and block candidates on the same list rank; in that case, the Sekihairitsu (惜敗率, ratio of margin of defeat) system determines the order of candidates.Each voter votes twice, once for a candidate in the local constituency, and once for a party in the regional "block" constituency. In a parallel system, there is no link between votes in one tier and seat numbers in the other; but so-called
In staggered elections, half of the House of Councillors comes up for election every three years in regular/ordinary elections of members of the House of Councillors (参議院議員通常選挙, Sangi-in giin tsūjō-senkyo). The term is fixed, the House of Councillors cannot be dissolved. This, too, is a parallel electoral system. Dual candidacies are not allowed. As in House of Representatives elections, voters have two votes: In the majoritarian election, the vote has to be for a candidate, but in the proportional election, the vote may be for either a party list or a single candidate; in the latter case, the vote counts as both a vote for the party list (to determine proportional seat distribution), and as a preference vote within that list (to determine the order or proportional candidates within that list). The district magnitudes in the majoritarian tier vary between one and six, dependent on, but not fully proportional to the population of each prefecture. In single-member constituencies, SNTV becomes equivalent to first-past-the-post, whereas seats are usually split between different parties/alliances in multi-member constituencies (and in the proportional constituency by definition). Therefore, the single-member constituencies of the House of Councillors ( 参議院一人区 , Sangiin ichinin-ku) are more likely to swing the election result and often receive more media and campaign attention. The proportional election to the House of Councillors allows the voters to cast a preference vote for a single candidate on a party list. The preference votes strictly determined the ranking of candidates on party lists before 2019. Since the 2019 election, parties are allowed to prioritize individual candidates on their proportional list over voter preferences in a "special frame" (特定枠, tokutei-waku). In the 2019 election, almost all parties continued to use completely open lists; exceptions were the LDP which used the "special frame" to give secure list spots to two LDP prefectural federations affected by the introduction of combined constituencies in 2016, Reiwa Shinsengumi which used it to give secure list spots to two candidates with severe disabilities, and the minor "Labourers' Party for the liberation of labour".
The electoral cycles of the two chambers of the Diet are usually not synchronized. Even when the current constitution took effect in 1947, the first House of Councillors election was held several days apart from the 23rd House of Representatives election. Only in 1980 and 1986, general and regular election coincided on the same day because the House of Representatives was dissolved in time for the election to be scheduled together with the House of Councillors election in early summer.
Vacant district seats in both Houses are generally filled in by-elections (補欠選挙, hoketsu senkyo). Nowadays, these are usually scheduled in April and October as necessary. Vacant proportional seats in both Houses and district seats in the House of Councillors that fall vacant within three months of a regular election are filled by kuriage-tōsen (繰り上げ当選, roughly "being elected as runner-up"): the highest ranking candidate on a proportional list or in the electoral district who was not elected and is not disqualified takes the seat. Disqualifications may, for example, happen if a candidate for the House of Councillors runs for the House of Representatives or vice versa, or after a violation of campaign laws.
For many years, Japan was a one party dominant state until 1993 with the Liberal Democratic Party (自由民主党, Jiyū-Minshu-tō) as the ruling party. It won a majority of the popular vote in House of Representatives general elections until the 1960s. It lost the majority of seats in 1976 and 1979, but continued to rule without coalition partners with the support of independent Representatives. After the 1983 election when it again lost the majority, it entered a coalition for the first time – with the New Liberal Club (新自由クラブ, Shin-Jiyū-kurabu). In 1986, the coalition ended as the LDP won a large majority of seats and even came close to a majority of votes. The party suffered its first clear electoral defeat in the 1989 House of Councillors regular election when it lost the upper house majority and had to face for the first time a divided Diet (ねじれ国会, Nejire Kokkai, lit. "twisted Diet") where passing legislation depends on cooperation with the opposition. The LDP was out of government for the first time in 1993 after Ichirō Ozawa and his faction had left the party and the opposition parties united in an anti-LDP coalition, but then soon returned to the majority in 1994 by entering a coalition with its traditional main opponent, the Japan Socialist Party (日本社会党, Nihon-Shakai-tō). The 2009 House of Representatives elections handed the first non-LDP victory to the Democratic Party of Japan (民主党, Minshu-tō).
According to a survey by Yomiuri Shimbun in April 2010, almost half of Japanese voters do not support any political parties due to political inefficiency.
Between 1885 and 1947 in the Empire of Japan, the prime minister was not elected, but responsible to, chosen and appointed by the Emperor. In practice, the Genrō (元老) usually nominated a candidate for appointment. The Imperial Diet (帝国議会, Teikoku-gikai) and its elected lower house, the House of Representatives, which were set up in 1890 according to the Imperial Constitution, had no constitutionally guaranteed role in the formation of cabinets. [ better source needed ]
Since 1947, the Prime Minister has been chosen in the "designation election of the prime minister" (内閣総理大臣指名選挙, Naikaku sōridaijin shimei senkyo) (ja) in the National Diet. It is held after a cabinet has submitted its resignation – the outgoing cabinet remains as caretaker cabinet until the Imperial inauguration ceremony of a new prime minister –; a cabinet must resign en masse under the constitution (Articles 69 and 70) 1. always on convocation of the first Diet after a general election of the House of Representatives, 2. if the post of prime minister has fallen vacant – that includes cases when the prime minister is permanently incapacitated, e.g. by illness, kidnapping or defection –, or 3. if a no-confidence vote in the House of Representatives is not answered by the dissolution of the chamber. Though both Houses of the Diet vote in two-round elections to select a prime minister, the House of Representatives has the decisive vote: If the two Houses vote for different candidates (as they did in 1948, 1989, 1998, 2007 and 2008), a procedure in the joint committee of both houses (両院協議会, Ryōin Kyōgikai) may reach a consensus; but eventually the candidate of the House of Representatives becomes that of the whole Diet and thereby prime minister-designate. The designated prime minister must still be ceremonially appointed by the Emperor in the Imperial Investiture (親任式, Shinnin-shiki) to enter office; but unlike some heads of state, the Emperor has no reserve power to appoint anyone other than the person elected by the Diet.
In 2001, LDP president and Prime Minister Junichirō Koizumi instituted an advisory council to investigate the possibility of introducing direct popular election of the prime minister in a constitutional revision.
The centre-left opposition won all three April 2021 elections to the Diet:
The 26 April by-election in Shizuoka's 4th district was won by former prefectural assemblyman Yōichi Fukazawa (LDP – Kōmeitō). With 61% of the vote, he easily beat opposition candidate Ken Tanaka (I – CDP, DPFP, JCP, SDP; 35%), a former prefectural assembly member from Tokyo, and two other candidates to fill the seat vacated by Yoshio Mochizuki's death in December.
The 27 October by-election in Saitama to fill the vacancy created by Motohiro Ōno's (DPFP) resignation was won by previous governor and former DPJ House of Representatives member Kiyoshi Ueda who had been an independent since his move from national to prefectural politics in 2003. The only other candidate was Takashi Tachibana for the anti-NHK party.
The LDP lost both April 2019 by-elections, in Okinawa to the left opposition, in Osaka to the Ishin no Kai.
|Liberal Democratic Party||18,555,717||33.28||66||26,500,777||47.82||218||284||–7|
|Constitutional Democratic Party of Japan||11,084,890||19.88||37||4,726,326||8.53||18||55||New|
|Kibō no Tō||9,677,524||17.36||32||11,437,602||20.64||18||50||New|
|Japanese Communist Party||4,404,081||7.90||11||4,998,932||9.02||1||12||–9|
|Nippon Ishin no Kai||3,387,097||6.07||8||1,765,053||3.18||3||11||New|
|Social Democratic Party||941,324||1.69||1||634,770||1.15||1||2||0|
|Happiness Realization Party||292,084||0.52||0||159,171||0.29||0||0||0|
|New Party Daichi||226,552||0.41||0||0||New|
|Shiji Seitō Nashi||125,019||0.22||0||0||0|
|Party for Japanese Kokoro||85,552||0.15||0||0||–2|
|Assembly for Zero Parliamentary Compensation||21,892||0.04||0||0||New|
|New Party Constitution Article 9||6,655||0.01||0||0||New|
|Japan New Party||5,291||0.01||0||0||New|
|Assembly to Make Nagano Prefecture the Best Economy in Japan||3,784||0.01||0||0||New|
|Workers Party Aiming for Liberation of Labor||3,133||0.01||0||0||New|
|Association to Innovate Metropolitan Government||2,931||0.01||0||0||New|
|Katsuko Inumaru and Republican Party||1,570||0.00||0||0||0|
|World Economic Community Party||1,307||0.00||0||0||0|
|Source: Ministry of Internal Affairs and Communications|
In the 1980s, apportionment of electoral districts still reflected the distribution of the population in the years following World War II, when only one-third of the people lived in urban areas and two thirds lived in rural areas. In the next forty-five years, the population became more than three-quarters urban, as people deserted rural communities to seek economic opportunities in Tokyo and other large cities. The lack of reapportionment led to a serious underrepresentation of urban voters. Urban districts in the House of Representatives were increased by five in 1964, bringing nineteen new representatives to the lower house; in 1975 six more urban districts were established, with a total of twenty new representatives allocated to them and to other urban districts. Yet great inequities remained between urban and rural voters.
In the early 1980s, as many as five times the votes were needed to elect a representative from an urban district compared with those needed for a rural district. Similar disparities existed in the prefectural constituencies of the House of Councillors. The Supreme Court had ruled on several occasions that the imbalance violated the constitutional principle of one person-one vote. The Supreme Court mandated the addition of eight representatives to urban districts and the removal of seven from rural districts in 1986. Several lower house districts' boundaries were redrawn. Yet the disparity was still as much as three urban votes to one rural vote.
After the 1986 change, the average number of persons per lower house representative was 236,424. However, the figure varied from 427,761 persons per representative in the fourth district of Kanagawa Prefecture, which contains the large city of Yokohama, to 142,932 persons in the third district of largely rural and mountainous Nagano Prefecture.
The 1993 reform government under Hosokawa Morihiro introduce a new electoral system whereby 200 members (reduced to 180 beginning with the 2000 election) are elected by proportional representation in multi-member districts or "blocs" while 300 are elected from single-candidate districts.
Still, according to the 6 October 2006 issue of the Japanese newspaper Daily Yomiuri , "the Supreme Court followed legal precedent in ruling Wednesday that the House of Councillors election in 2004 was held in a constitutionally sound way despite a 5.13-fold disparity in the weight of votes between the nation's most densely and most sparsely populated electoral districts".[ citation needed ]
The 2009 general House of Representatives election was the first unconstitutional lower house election under the current electoral system introduced in 1994 (parallel voting and "small" FPTP single-member electoral districts/"Kakumander"). In March 2011, the Grand Bench (daihōtei) of the Supreme Court ruled that the maximum discrepancy of 2.30 in voting weight between the Kōchi 3 and Chiba 4 constituencies in the 2009 election was in violation of the constitutionally guaranteed equality of all voters. As in previous such rulings on unconstitutional elections (1972, 1980, 1983 and 1990 Representatives elections, 1992 Councillors election), the election is not invalidated, but the imbalance has to be corrected by the Diet through redistricting and/or reapportionment of seats between prefectures.
In 2016, a panel of experts proposed to introduce the [John Quincy] Adams apportionment method (method of smallest divisors) for apportioning House of Representatives seats to prefectures. The reform is planned to be implemented after the 2020 census figures are available and not expected to take effect before 2022.In the meantime, another redistricting and apportionment passed in 2017 is designed to keep the maximum malapportionment ratio in the House of Representatives below 2. In the FPTP tier, it changes 97 districts and cuts six without adding any; in the proportional tier, four "blocks" lose a seat each; the total number of seats in the lower house is cut to 465, 289 majoritarian seats and 176 proportional seats.
The malapportionment in the 2010and 2013 regular House of Councillors elections was ruled unconstitutional (or "in an unconstitutional state") by the Supreme Court, and has been reduced by a 2015 reapportionment below 3 (at least in government statistics from census data which is regular and standardized but lags behind resident registration statistics and the actual number of eligible voters; using the latter, the maximum malapportionment in the 2016 election remained slightly above 3 ).
The following table lists the 10 electoral districts with the highest and lowest number of registered voters per member elected for each chamber of the National Diet according to the voter statistics as of September 2016 released by the Ministry of Internal Affairs and Communications – it takes into account the lowering of the voting age and the district reforms to both houses of the Diet in effect since the 2014 and 2016 elections, but not the 2017 redistricting/reapportionment effective from the next House of Representatives election.
|House of Representatives||House of Councillors|
|Lowest vote weight||Highest vote weight||Lowest vote weight||Highest vote weight|
|#||District||Registered voters||District||Registered voters||District||Registered voters|
per member elected
per member elected
|1||Tokyo 1||514,974||Fukushima 4||233,491||Saitama||1,015,543||Fukui||328,772||1|
|2||Hokkaidō 1||505,510||Miyagi 5||234,373||Niigata||978,686||Saga||346,727||2|
|3||Tokyo 3||504,929||Kagoshima 5||240,056||Miyagi||975,466||Yamanashi||353,402||3|
|4||Tokyo 5||498,903||Tottori 1||240,874||Kanagawa||951,735||Kagawa||417,082||4|
|5||Hyōgo 6||492,173||Nagasaki 3||242,165||Tokyo||937,470||Wakayama||419,011||5|
|6||Tokyo 6||490,674||Tottori 2||242,194||Osaka||915,000||Akita||448,236||6|
|7||Tokyo 19||488,494||Nagasaki 4||242,303||Nagano||885,638||Toyama||452,822||7|
|8||Tokyo 22||486,965||Aomori 3||244,007||Chiba||871,110||Miyazaki||466,829||8|
|9||Saitama 3||483,014||Mie 4||244,825||Gifu||850,190||Yamagata||475,419||9|
|10||Tokyo 23||481,206||Iwate 3||246,272||Tochigi||827,368||Ishikawa||481,027||10|
Prefectural assemblies and governors, as well as mayors and assemblies in municipalities, are elected for four-year terms. In April 1947, all local elections in the 46 prefectures (excluding Okinawa, then under US military rule) and all their municipalities were held at the same time in "unified local elections" (tōitsu chihō senkyo). Since then, some gubernatorial and mayoral elections, and most assembly elections, have stayed on this original four-year cycle. Most governors and mayors are now elected on different schedules as the four-year cycle "resets" upon the resignation, death or removal of a sitting governor or mayor. Some assembly election cycles have also shifted due to assembly dissolutions or mergers of municipalities. In the last unified local elections in April 2015, 10 of 47 governors, 41 of 47 prefectural assemblies, 222 mayors and 689 municipal assemblies were scheduled to be elected.
As of 2015, the major contests in the unified local elections are as follows:
|Prefecture||Governor||Assembly||Designated city races|
|Hokkaido||♦||♦|| Sapporo mayor|
|Kanagawa||♦||♦|| Yokohama assembly|
|Shizuoka||♦|| Shizuoka mayor|
|Osaka||♦|| Osaka assembly|
|Hiroshima||♦|| Hiroshima mayor|
Although Tokyo's metropolitan governor and assembly elections are currently held on separate schedules, 21 of the 23 special wards of Tokyo follow the unified election schedule for their assembly elections, the only exceptions being Katsushika and Adachi. The majority of Tokyo's special wards follow separate cycles for their mayoral elections. Tokyo elected its governor as part of the unified elections until 2011, but was forced to hold a 2012 election and 2014 election due to the resignations of Shintaro Ishihara and Naoki Inose.
Iwate Prefecture, Miyagi Prefecture and Fukushima Prefecture are no longer on the unified election cycle due to the 2011 Tohoku earthquake and tsunami, which delayed their elections.
Upcoming elections due to expiring terms (additional early elections may be caused by resignations, deaths, votes of no confidence, dissolutions, recalls etc.):
Votes in national and most local elections are cast by writing the candidate's or party's name on a blank ballot paper. In elections for the House of Representatives voters fill in two ballots, one with the name of their preferred district candidate and one with their preferred party in the proportional representation block. For the House of Councillors, the district vote is similar (in SNTV multi-member districts, several candidates can be elected, but every voter has only one vote). But in the proportional vote for the House of Councillors votes are cast for a party list (to determine how many proportional seats a party receives) or a candidate (which additionally influences which candidates are elected from a party's list).
Ballots that cannot unambiguously be assigned to a candidate are not considered invalid, but are assigned to all potentially intended candidates proportionally to the unambiguous votes each candidate has received. These so-called "proportional fractional votes" (按分票, Anbun-hyō) are rounded to the third decimal. For example, if "Yamada A" and "Yamada B" both stood in an election and there were 1500 unambiguous votes: 1000 for "Yamada A" and 500 for "Yamada B"; five ambiguous votes for "Yamada" would then count for Yamada A as 5×1000/1500=3.333 votes, and for Yamada B as 5×500/1500=1.667 votes. The official overall result would then be: Yamada A 1003.333 votes, Yamada B 501.667 votes.
In 2002, passage of an electronic voting law (期日前投票制度, Kijitsu-mae tōhyō seido) was introduced. In the 2017 general/House of Representatives election, a record number of more than 21 million Japanese voted early; at the same time overall turnout was low (the second lowest in history), so in 2017, roughly 38 % of all actual voters had voted early. For regular/House of Councillors elections, the 2019 election set a new all-time high with more than 17 million early voters, corresponding to roughly a third of actual voters in 2019 as overall turnout hit the second lowest value in history.allowed for the introduction of electronic voting machines in local elections. The first machine vote took place in Niimi, Okayama in June 2002. In 2003, a system for early voting
In Japan, walkovers in elections are called Mutōhyō tōsen (無投票当選), "[being] elected without vote". And there is literally no vote held in a walkover in Japan, no way to vote "no" or abstain explicitly: If there are only as many candidates in an election as there are seats/offices at the start of the legal election period ("official announcement": kōji (公示) in national general and regular elections; kokuji (告示) in prefectural and municipal elections as well as national by-elections), they are declared the winners. But the otherwise applicable moratorium period after regular elections on recall attempts does not apply after a walkover. (Recalls are a two-/three-step procedure: first, supporters of a recall must collect a sufficient number of signatures; if they do, a referendum is held on whether or not to recall the incumbent; only if that is accepted by a majority, a fresh election is scheduled.) Article 100 of the Public Offices Election Law deals with walkovers, there are additional walkover provisions for subnational elections in the Local Autonomy Law.
Walkovers have become widespread in prefectural and municipal elections in recent years; in the 2019 unified local elections, out of 2277 seats up in 945 electoral districts for 41 prefectural assemblies, a record 612 seats are won by walkovers in a total of 371 districts or 39% of all electoral districts. In one extreme case, a rural single-member electoral district to the Shimane prefectural assembly, there hasn't been a contested election in 31 years (the whole Heisei period).
Yuko Sato is a Japanese politician and member of the Genzei Nippon party. She previously served one term in the House of Representatives of Japan's national Diet and currently serves on the Nagoya city council in Aichi Prefecture.
Hokkaidō 9th district is a constituency of the House of Representatives in the Diet of Japan. It consists of Hokkaido's Hidaka and Iburi Subprefectures. As of 2009, 414,438 eligible voters were registered in the district.
Wakayama 3rd district is a constituency of the House of Representatives in the Diet of Japan. It is located in Wakayama Prefecture and consists of Arida, Gobo, Shingu, and Tanabe cities and the Arida, Hidaka, Higashimuro, and Nishimuro districts. As of 2012, 298,296 eligible voters were registered in the district.
Aichi 5th district is a constituency of the House of Representatives in the Diet of Japan. It is located in Aichi Prefecture and consists of Nagoya's Nakamura and Nakagawa wards, the cities of Kiyosu and Kitanagoya and the Nishikasugai district. As of 2016, 428,423 eligible voters were registered in the district. The current representative of this district is Vice Speaker Hirotaka Akamatsu of the Constitutional Democratic Party.
Hyogo 11th district is a constituency of the House of Representatives in the Diet of Japan. It is located in Southwestern Hyōgo and is based on the 1995 borders of the city of Himeji; the former towns of Ieshima, Yumesaki, Kōdera and Yasutomi that merged into Himeji in 2006 are part of the 12th district. As of September 2015, 387,509 eligible voters were registered in the district.
The Shikoku proportional representation block is one of eleven proportional representation (PR) "blocks", multi-member constituencies for the House of Representatives in the Diet of Japan. It consists of Shikoku region covering Tokushima, Kagawa, Ehime and Kōchi Prefectures. Following the introduction of proportional voting it elected seven representatives in the 1996 general election. When the total number of PR seats was reduced from 200 to 180, the Shikoku PR block shrunk to six seats.
Kagoshima 3rd district is a single-member constituency of the House of Representatives in the Diet of Japan. It is located in Western Kagoshima and consists of the cities of Satsumasendai, Makurazaki, Ichikikushikino, Hioki, Minamisatsuma, Minamikyūshū, the former towns of Kōriyama and Matsumoto in the current city of Kagoshima and the town of Satsuma in Satsuma county. As of 2009, 265,049 eligible voters were registered in the district.
Yamaguchi 4th district 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. As of September 2011, 266,456 voters were registered in the district, giving its voters well above average vote weight. 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 part of the Fukuoka-Kitakyūshū metropolitan area.
Hokkaidō 2nd district is a single-member electoral district for the House of Representatives, the lower house of the National Diet of Japan. It is located in the prefecture (-dō) of Hokkaidō and consists of two wards (-ku) of the prefectural capital, the city (-shi) of Sapporo: Kita ("North") and Higashi ("East"). As of 2013, 444,440 eligible voters were registered in the district.
House of Councillors elections were held in Japan on Sunday 10 July 2016 to elect 121 of the 242 members of the House of Councillors, the upper house of the National Diet, for a term of six years. As a result of the election, the Liberal Democratic Party–Komeito coalition gained ten seats for a total of 145, the largest coalition achieved since the size of the house was set at 242 seats.
The Hyogo at-large district is a constituency that represents Hyogo Prefecture in the House of Councillors in the Diet of Japan. It currently has five Councillors in the 242-member house, but this representation will increase to six by July 2019.
The Tokushima-Kochi at-large district is a constituency of the House of Councillors in the Diet of Japan. The district was formed in 2015 from a merger of the Tokushima and Kōchi at-large districts. Liberal Democratic Party member Yusuke Nakanishi was elected as its first representative at the House of Councillors election in July 2016.
The Tottori-Shimane at-large district is a constituency of the House of Councillors in the Diet of Japan. It was formed pursuant to a 2015 revision of the Public Officers Election Law from a merger of the Tottori and Shimane at-large districts, the two smallest districts in the country, to address the imbalance in representation between rural and urban voters. The district has 1,068,348 registered voters and was contested for the first time at the House of Councillors election that was held on 10 July 2016.
The Shikoku proportional representation block was one of 11 multi-member districts that were contested at the general election for the House of Representatives in the Japanese National Diet on 14 December 2014. Six seats were available for election via open party lists. Prime Minister Shinzo Abe's Liberal Democratic Party (LDP) maintained their dominance in the predominantly rural area, claiming three of the seats.
The Miyagi at-large district is a constituency that represents Miyagi Prefecture in the House of Councillors in the Diet of Japan. It currently has three Councillors in the 242-member house, but this representation will decrease to two at the next election, to be held by July 2019.
The Gifu at-large district is a constituency that represents Gifu Prefecture in the House of Councillors in the Diet of Japan. It currently has three Councillors in the 242-member house.
The Ibaraki at-large district is a constituency that represents Ibaraki Prefecture in the House of Councillors in the Diet of Japan. It has four Councillors in the 242-member house.
The Toyama at-large district is a constituency that represents Toyama Prefecture in the House of Councillors in the Diet of Japan. It has two Councillors in the 242-member house.
The Shizuoka at-large district is a constituency that represents Shizuoka Prefecture in the House of Councillors in the Diet of Japan. It has four Councillors in the 242-member house.
A by-election for the Tokyo 10th district in the Japanese Japanese House of Representatives was held on 23 October 2016 to replace Yuriko Koike, who vacated the seat to contest the Tokyo gubernatorial election in July 2016. Koike, a member of the Liberal Democratic Party (LDP), had represented the district since the December 2012 general election and also served a previous term from 2005-2009. The election was won by LDP candidate Masaru Wakasa, an incumbent member for the Tokyo proportional representation block who had supported Koike during her gubernatorial campaign. A separate by-election for the Fukuoka 6th district was held on the same day.