The members of the House of Representatives of Japan from 2014 to 2017 were elected on 14 December 2014
Members of House of Representatives elected from single-seat constituencyf
LDP Komei DPJ JIP JCP SDP PLP PFG Independent
By-elections
| Year | Month and date | District | Winner | Party | Vacancy | Party | Notes |
|---|---|---|---|---|---|---|---|
| 2015 | ー | There was a reason for the implementation, but it was originally scheduled to hold a by-election in Hokkaido 5th district, but it was postponed to the next election due to apportionment lawsuit. There were no national elections in 2015. | |||||
| 2016 | April 24 | Hokkaido-5th | Yoshiaki Wada | LDP | Nobutaka Machimura | LDP | Machimura died on 1 June 2015. |
| Kyoto-3rd | Kenta Izumi | DP | Kensuke Miyazaki | LDP | Miyazaki resigned as a member of the House of Representatives on 16 February 2016, to take responsibility for his adultery. | ||
| October 23 | Fukuoka-6th | Jiro Hatoyama | Independent | Kunio Hatoyama | LDP | Hatoyama died on 21 June 2016. | |
| Tokyo-10th | Masaru Wakasa | LDP | Yuriko Koike | LDP | Koike resigned as a member of the House of Representatives 14 July 2016 to run for 2016 Tokyo gubernatorial election. | ||
| 2017 | ー | Aomori-4th | ー | ー | Tarō Kimura | LDP | Kimura died on 25 July 2017. |
| Niigata-5th | ー | ー | Tadayoshi Nagashima | LDP | Nagashima died on 18 August 2017. | ||
| Ehime-3rd | ー | ー | Toru Shiraishi | LDP | Shiraishi died on 17 March 2017. | ||
- By-election for Aomori 4th district, Niigata 5th district, and Ehime 3rd district was scheduled to be held in October 2017, but by-election was canceled because the House of Representatives was dissolved and 2017 Japanese general election was held.
Members of House of Representatives elected from proportional representation block
LDP Komei DPJ JIP JCP SDP
People who were elected in PR following the resignation of another member of the House of Representatives
| Year | Month | block | Winner | Party | Vacancy | Notes |
|---|---|---|---|---|---|---|
| 2015 | October | Kinki | Tamotsu Shiiki | JIP | Hirofumi Yoshimura | Yoshimura resigned as a member of the House of Representatives on 1 October 2015, to run for 2015 Osaka mayoral election. |
| 2016 | April | Kinki | Keiro Kitagaki | DPJ | Kenta Izumi | Izumi lost his job as a member of the House of Representatives on 12 April 2016, to run for the by-election in Kyoto 3rd district. |
| October | Tokyo | Tsuyoshi Tabata | LDP | Masaru Wakasa | Wakasa lost his job as a member of the House of Representatives on 11 October 2016, to run for the by-election in Tokyo 10th district. | |
| 2017 | July | Tohoku | Izumi Yoshida | DPJ | Kazuko Kōri | Kōri lost her job as a member of the House of Representatives on 9 July 2017, to run for 2017 Sendai mayoral election. |
| Lists of members of the National Diet of Japan | ||
|---|---|---|
 | ||
| House of Representatives | ||
| House of Councillors | ||