Sources for the Japan pages
Each item was read on 17 October 2026. News reports and Wikipedia are not used as the source of a fact.
Last updated: October 17, 2026. Unofficial information. Confirm with your official election office (総務省).
What is not in these sources is not invented. The gaps left open are the term-end date of the current House of Representatives, the next national polling day, party seats for the 51st general election, governors’ names, municipalities, single-member districts, and postcodes. Population is the preliminary count of 29 May 2026. The basic tabulation of 29 September 2026 was read as a release date on the results page and was not used for the prefecture figures.
Terms of use and attribution
Public information from the Ministry of Internal Affairs and Communications (including the Statistics Bureau), the Prime Minister’s Office, the House of Representatives, the House of Councillors and e-Gov is used under each site’s terms of use (Public Data License, the Government of Japan Standard Terms of Use, or the site’s own terms). The source and the date read are given for each item. No images or logos are reproduced. Any summary or edit is ours, not the source’s.
Sources
- 日本国憲法（e-Gov 法令検索） — read 2026-10-17
- 総務省「選挙の種類」 — read 2026-10-17
- 総務省「未来を担う私たち 〜責任ある一票を〜」（公示・告示と定数の表） — read 2026-10-17
- 衆議院「衆議院議員総選挙一覧表」 — read 2026-10-17
- 衆議院「国会会期一覧」 — read 2026-10-17
- 衆議院 — read 2026-10-17
- 参議院「第27回参議院議員通常選挙」を含む国会概観（第218回） — read 2026-10-17
- 参議院 — read 2026-10-17
- 総務省「令和7年7月20日執行 参議院議員通常選挙 発表資料」 — read 2026-10-17
- 総務省 選挙 — read 2026-10-17
- 首相官邸「第2次高市改造内閣 閣僚等名簿」（令和8年10月15日現在） — read 2026-10-17
- 首相官邸「令和8年2月18日 内閣総理大臣の指名」 — read 2026-10-17
- 総務省統計局「令和7年国勢調査 人口速報集計結果 結果の概要」（令和8年5月29日） — read 2026-10-17
- 総務省統計局「令和7年国勢調査 調査の結果」 — read 2026-10-17