Niigata currently sends 12 elected members to the Diet of Japan, 10 to the House of Representatives and 2 to the House of Councillors. The prefecture lost 1 Councillor due to reapportionment in 2019.
The current House of Representatives Niigata delegation consists of 6 members of the LDP, 4 members of the CDP.
| District | Representative | Party | Incumbency | ||
|---|---|---|---|---|---|
| 1st | Chinami Nishimura | Constitutional Democratic | 22 October 2017 – present | ||
| 2nd | Kenichi Hosoda | Liberal Democratic | 31 October 2021 – present | ||
| 3rd | Hiroaki Saito | Liberal Democratic | 31 October 2021 – present | ||
| 4th | Makiko Kikuta | Constitutional Democratic | 22 October 2017 – present | ||
| 5th | Ryuichi Yoneyama | Constitutional Democratic | 31 October 2021 – present | ||
| 6th | Mamoru Umetani | Constitutional Democratic | 31 October 2021 – present |
| Representative | Party | District contested | Incumbency |
|---|---|---|---|
| Shūichi Takatori (LD-Jōetsu) | LDP | Niigata-6th | 26 December 2012 – present |
| Ichirō Tsukada (LD-Niigata City) | Niigata-3rd | 24 December 2014 – present | |
| Hirohiko Izumida (LD-Nagaoka) | Niigata-5th | 1 November 2017 – present | |
| Isato Kunisada (LD-Sanjō) | Niigata-4th | 3 November 2021 – present | |
The current House of Councillors Niigata delegation consists of 1 member of the CDP and 1 member of the LDP. The members are elected from the Niigata at-large district.
| Party | Councillors | Term ends | Incumbency | |
|---|---|---|---|---|
| LDP | Kazuhiro Kobayashi | 2028 | 26 July 2022 – present | |
| CDP | Sakura Uchikoshi | 2025 | 29 July 2019 – present | |