(As of February 18, 2026)
| Liberal Democratic Party | 316 (39) |
| Centrist Reform Alliance | 48 (8) |
| Nippon Ishin (Japan Innovation Party) | 36 (1) |
| Democratic Party For the People | 28 (8) |
| SANSEITO | 15 (8) |
| Team Mirai | 11 (2) |
| Japanese Communist Party | 4 (2) |
| Independents | 7 (0) |
| INCUMBENTS | 465 (68) |
| Vacancies | 0 |
| MEMBERSHIP | 465 |
Note: Figures in parentheses indicate the number of women.
In-House Group: A group of House Members who engage in joint activities within the House. Usually, a political party forms an in-House group inside the House, but occasionally there are cases where a group is formed by (1) House Members who do not belong to a particular political party, (2) a political party and a House Member or Members who do not belong to any political party, or (3) two or more political parties.