Zukan series
Seiji Zukan
Income and spending of parties, political groups and Diet members, and who donated to them.
seiji-zukan.jpJapanese only
What you can find
Funds by Diet member
Income, donations, fundraising parties and spending for each Diet member, plus total assets.
Parties and party subsidies
Each party's headquarters income, government subsidies, local branches and members.
Political groups
Income and spending of party headquarters and branches, fund-management bodies and Diet members' political groups.
Donors
Who gave how much to which group, including companies that bought fundraising-party tickets.
Rankings
Diet members by income, party income, donations and assets; party subsidies; the largest corporate donors and more.
Who it's for
- Voters who want to see how their Diet member raises and spends money
- Anyone checking which political groups a company or organization supports
- Anyone comparing government subsidies across parties
Data
- Sources
- Political funds reports published by the Ministry of Internal Affairs and Communications
- Reports on the use of party subsidies
- Member lists of both houses of the Diet, and Diet members' asset reports
- Updates
- Every day it checks the ministry's publications and reads new reports. The PDF reports are read with AI and turned into figures.
- Coverage
- 710 Diet members862 political groups1,530 donorsAs of October 2026
Links with the other Zukan sites
- People
- people with the same name, such as shareholders and Diet members
Pages about the same company, person or place link to each other across the sites.