List of members of the Diet of Japan
This is a list of members of the Diet of Japan. The Diet has two chambers: the House of Councillors (upper house) and the House of Representatives (lower house). Councillors serve six year terms, with half being elected every three years. Representatives serve terms of up to four years, but the House of Representatives can be dissolved, causing a shorter term (snap election).
House of Representatives
Below are lists of representatives elected in Japanese general elections since 2003.
- Members of the House of Representatives elected in the 43rd general election (2003)
- Members of the House of Representatives elected in the 44th general election (2005)
- Members of the House of Representatives elected in the 45th general election (2009)
- Members of the House of Representatives elected in the 46th general election (2012)
- Members of the House of Representatives elected in the 47th general election (2014)
- Members of the House of Representatives elected in the 48th general election (2017)
- Members of the House of Representatives elected in the 49th general election (2021)
- Members of the House of Representatives elected in the 50th general election (2024)
- Current list: Members of the House of Representatives elected in the 51st general election (2026)
Composition
| ||||
| Parliamentary groups/caucuses | Parties | Seats | ||
|---|---|---|---|---|
| Liberal Democratic Party / Assembly of Independents Jiyūminshutō・Mushozoku no Kai |
Liberal Democratic Party (LDP) Independents |
316 | ||
| Centrist Reform Alliance Chūdō Kaikaku Rengō |
Constitutional Democratic Party (CDP) Komeito |
49 | ||
| Nippon Ishin no Kai Nippon Ishin no Kai |
Nippon Ishin no Kai | 36 | ||
| Democratic Party for the People / Independent Club Kokumin Minshutō・Mushozoku Kurabu |
Democratic Party For the People (DPFP) | 28 | ||
| Sanseitō Sanseitō |
Sanseitō | 15 | ||
| Team Mirai Chīmu Mirai |
Team Mirai | 11 | ||
| Japanese Communist Party Nihon Kyōsantō |
Japanese Communist Party (JCP) | 4 | ||
| Reiwa Shinsengumi Reiwa Shinsengumi |
Reiwa Shinsengumi | 1 | ||
| Tax Cuts Japan and Yukoku Alliance Genzei Nippon Yūkoku Rengō |
Tax Cuts Japan and Yukoku Alliance | 1 | ||
| Independents (not member of a caucus) Mushozoku |
Independents (not member of a party) | 4 | ||
| Total | 465 | |||
List of members by parliamentary group and constituency. There are usually translations and abbreviations for parliamentary groups (会派, kaiha; current House of Representatives website translation: "In-House Group") used on the English pages of the House of Representatives website,[2]
- LDP
- CRA
- Nippon Ishin
- DPFP
- Sanseitō
- Team Mirai
- JCP
- Reiwa
- Genzei Nippon
- Independents
Notes:
- Not all members of a parliamentary group are necessarily members of the associated party/parties if any, and vice versa. For example, the Speaker and Vice-Speaker of the House of Representatives are independents in terms of parliamentary group membership, but not independents in terms of party membership.
- The count of terms as given by the House of Representatives follows the usual way of counting them in Japan by number of won elections (tōsen kaisū) which is not necessarily identical to election periods of the House of Representatives. For example, former member Nobutaka Machimura served for two terms as a member during the (2009–2012) 45th election period of the House of Representatives: one as member for the Hokkaidō proportional constituency from the general election in August 2009 to his resignation in September 2010, and one as member for constituency number 5 in Hokkaidō from the by-election in October 2010 to dissolution in November 2012. Among other things, the election count determines the seating within a parliamentary group, the more senior members by this measure sit in the back.
- Most proportional members of the House of Representatives have been deleted.
House of Councillors
Composition
| |||||||||
| Caucus (English name)[52] (Japanese name) |
Parties | Members | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Term | Total | ||||||||
| 26 July 2022 – 25 July 2028 (elected 2022, up 2028) |
29 July 2025 – 28 July 2031 (elected 2025, up 2031) | ||||||||
| PR | SNTV/FPTP | Subtotal | PR | SNTV/FPTP | Subtotal | ||||
| Government | 120 | ||||||||
| Liberal Democratic Party and Group of Independents Jiyūminshutō / Mushozoku no Kai |
Liberal Democratic Party (LDP) Independent |
18 | 43 | 61 | 12 | 28 | 40 | 101 | |
| Nippon Ishin (Japan Innovation Party) Nippon Ishin no Kai |
Nippon Ishin no Kai | 8 | 4 | 12 | 4 | 3 | 7 | 19 | |
| Opposition | 121 | ||||||||
| The Constitutional Democratic Party of Japan and the Independent Rikken-minshu / Mushozoku |
Constitutional Democratic Party (CDP) Independent |
7 | 10 | 17 | 7 | 16 | 23 | 40 | |
| Democratic Party For the People and The Shin-Ryokufukai Kokumin-minshutō / Shin-Ryokufūkai |
Democratic Party For the People (DPFP) | 3 | 4 | 7 | 7 | 11 | 18 | 25 | |
| Komeito Kōmeitō |
Komeito | 6 | 7 | 13 | 4 | 4 | 8 | 21 | |
| Sanseito Sanseitō |
Sanseitō | 1 | 0 | 1 | 7 | 7 | 14 | 15 | |
| Japanese Communist Party Nihon Kyōsantō |
Japanese Communist Party (JCP) | 3 | 1 | 4 | 2 | 1 | 3 | 7 | |
| Reiwa Shinsengumi Reiwa Shinsengumi |
Reiwa Shinsengumi | 2 | 0 | 2 | 3 | 0 | 3 | 5 | |
| Conservative Party of Japan Nihon Hoshutō |
Conservative Party of Japan | 0 | 0 | 0 | 2 | 0 | 2 | 2 | |
| Okinawa Whirlwind Okinawa no Kaze |
Independents | 0 | 1 | 1 | 0 | 1 | 1 | 2 | |
| Team Mirai and the Independent Chīmu Mirai / Mushozoku no Kai |
Team Mirai Independent |
0 | 0 | 0 | 1 | 1 | 2 | 2 | |
| Social Democratic Party Shakai Minshutō |
Social Democratic Party (SDP) | 1 | 0 | 1 | 1 | 0 | 1 | 2 | |
| Unaffiliated | 1 | 3 | 4 | 0 | 2 | 2 | 6 | ||
| Independents Members not affiliated with any parliamentary caucus |
LDP 1 (President) CDP 1 (Vice President) Independents | ||||||||
| Total | 50 | 73 | 123 | 50 | 74 | 124 | 247 | ||
| Vacant: one constituency seat in Tokyo (2028 class), vacant since the resignation of incumbent Reiwa Shinsengumi leader, Taro Yamamoto, on 21 January 2026[53] (no by-election held per Public Offices Election Act; threshold of one-quarter of district seats not met)[54] |
N/A | 0 | 1 | 1 | 0 | 0 | 0 | 1 | |
List of members by parliamentary group and constituency. There are usually translations and abbreviations for parliamentary groups (会派 kaiha, current House of Councillors website translation: "In-House Group") used on the English pages of the House of Representatives website
[55] The official caucus names[56] are transcribed to Latin here:
Notes:
- Not all members of a caucus are also members of the affiliated party, and sometimes even some members of a party are not member of the affiliated caucus.
- The N→S column allows to sort by prefecture from North to South in the order generally used in Japan (also used as number identifier for prefectures [JP-##] in ISO 3166-2).
- Due to a 2015 reapportionment, some districts are represented by an uneven number of members until the regular 2019 election, when it becomes effective in both halves.
Members
References
- ^ 衆議院議員総選挙・最高裁判所 裁判官国民審査結果調 （速報) (PDF). Ministry of Internal Affairs and Communications (in Japanese). 10 February 2026. Archived (PDF) from the original on 10 February 2026. Retrieved 13 February 2026.
- ^ House of Representatives: Strength of Political Groups in the House of Representatives
- ^ "衆議院選挙2021 北海道(札幌・函館など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 12 September 2024.
- ^ a b c d e f g h i j k "比例代表 当選当確一覧 衆議院選挙2021 -衆院選- NHK". www.nhk.or.jp (in Japanese). Retrieved 12 September 2024.
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- ^ "2021年衆議院議員総選挙 茨城1区". NHK (in Japanese). Retrieved 2021-11-01.
- ^ 開票速報 小選挙区：栃木 - 2021衆議 (in Japanese). NHK. Retrieved 13 December 2021.
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- ^ "衆議院選挙2021 東京(千代田区・港区など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 14 September 2024.
- ^ "衆議院選挙2021 新潟(長岡・三条など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 14 September 2024.
- ^ "衆議院選挙2021 長野(松本・上田など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 14 September 2024.
- ^ "衆議院選挙2021 富山(高岡・魚津など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 14 September 2024.
- ^ "衆議院選挙2021 石川(金沢・七尾など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 14 September 2024.
- ^ "衆議院選挙2021 福井(敦賀・小浜など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 14 September 2024.
- ^ "衆議院選挙2021 岐阜(大垣・高山など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 14 September 2024.
- ^ "衆議院選挙2021 静岡(浜松・沼津など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 14 September 2024.
- ^ "衆議院選挙2021 愛知(名古屋・豊橋など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 14 September 2024.
- ^ "衆議院選挙2021 三重(津・四日市など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 14 September 2024.
- ^ "衆議院選挙2021 滋賀(大津・彦根など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
- ^ "衆議院選挙2021 京都(福知山・舞鶴など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
- ^ "衆議院選挙2021 大阪(堺・岸和田など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
- ^ "衆議院選挙2021 兵庫(神戸・姫路など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
- ^ "衆議院選挙2021 奈良(大和高田・大和郡山など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
- ^ "衆議院選挙2021 和歌山(海南・橋本など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
- ^ "衆議院選挙2021 鳥取(米子・倉吉など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
- ^ "衆議院選挙2021 島根(松江・浜田など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
- ^ "衆議院選挙2021 岡山(倉敷・津山など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
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- ^ "衆議院選挙2021 宮崎(都城・延岡など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
- ^ "衆議院選挙2021 鹿児島(鹿屋・枕崎など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
- ^ "衆議院選挙2021 沖縄(那覇・宜野湾など)開票速報・選挙結果 小選挙区 NHK". www.nhk.or.jp (in Japanese). Retrieved 15 September 2024.
- ^ 会派別所属議員数 [Number of members belonging to each caucus]. Sangiin 参議院 [House of Councillors] (in Japanese). 2026-02-15. Retrieved 2026-02-15.
- ^ "List of the Members: House of Councillors". House of Councillors. 2026-02-15. Retrieved 2026-02-15.
- ^ Tang, Francis (2026-01-21). "Reiwa Shinsengumi leader Taro Yamamoto resigns from Upper House due to health". The Japan Times. Retrieved 2026-02-15.
- ^ 参院選、東京は合併選挙に [Tokyo to hold combined election for House of Councillors election]. Jiji Press, Ltd. (in Japanese). 2025-03-17. Retrieved 2026-02-15.
- ^ House of Councillors: Strength of the Political Groups in the House of Councillors
- ^ List of caucuses (in Japanese)
- ^ House of Councillors: List of caucuses and membership totals, List of members, List of members by district and in the proportional district: by caucus (Japanese); English list of members (by caucus, does not list electoral district or end of term)
External links
- "Composition of the House of Representatives". Retrieved August 5, 2016.
- "List of the Members of the House of Councillors". Retrieved August 5, 2016.