- Source: Eiji Kidoguchi
- Pemilihan Pimpinan Partai Demokrat Konstitusional Jepang 2021
- Eiji Kidoguchi
- Iwate at-large district
- Liberal Party (Japan, 2016)
- 2024 Japanese by-elections
- Megumi Hirose
- List of current members of the House of Councillors
- 2021 Constitutional Democratic Party of Japan presidential election
- 2016 Japanese House of Councillors election
- 2015 All Japan High School Soccer Tournament
Eiji Kidoguchi is a Japanese politician who is a member of the House of Councillors of Japan, serving for the Iwate at-large district as a member of the Constitutional Democratic Party of Japan. Kidoguchi was first elected in 2016,, but lost the seat in 2022. Kidoguchi won the seat back in by-election in 2024 after the resignation of the incumbent, Megumi Hirose.