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Parliament

Japan

Composition

House of Representatives · IPU Parline

Gender

Women 14.6%Men 85.4%

Age distribution · avg 54.7

Under 301.7%

30–4520%

45+78.3%

Indicator	Value
Parliament	House of RepresentativesIPU Parline [2024]
Structure	BicameralIPU Parline [2024]
Total seats	465 seatsIPU Parline [2024]
Electoral system	Mixed systemIPU Parline [2024]
Last election	2026-02-08IPU Parline [2024]
Next election (expected)	2030-01-31IPU Parline [2024]
Voter turnout	56.25 %IPU Parline [2024] 56.25 %·International IDEA Voter Turnout [2026] 56.25 %
Speaker	Eisuke MoriIPU Parline [2024]
Women members (seats)	68 seatsIPU Parline [2024]
Women in parliament	15.7 %World Bank WDI [2025]
Average member age	54.7 yearsIPU Parline [2024]

Section metadata

Data year2026

EditionDatabook 2026

Coverage11/11

LicenseCC-BY

Datasets on this page

IPU Parline
ipu_parline
Edition: 2024
International IDEA Voter Turnout
idea_voter_turnout
Edition: 2026
World Bank WDI
world_bank_wdi
Edition: 2024

About this data

Japan's parliament on Databook compiles 11 indicators from 3 open datasets including IPU Parline, International IDEA Voter Turnout, World Bank WDI. Key figures include parliament (House of Representatives), structure (Bicameral). Data is referenced to 2026. Every value carries its source and publication year, published under open licenses.