| Country | Parliament type | Voluntary political party quotas | Single/Lower House > Quota type | Single/Lower House > Constitutional quota details | Single/Lower House > Electoral law quota details |
| Albania | Unicameral | No | Legislated Candidate Quotas | No | Yes |
| Bulgaria | Unicameral | No | No Legislated | No | No |
| Croatia | Unicameral | Yes | Legislated Candidate Quotas | Yes | Yes |
| Czechia | Unicameral | No | No Legislated | No | No |
| Estonia | Unicameral | No | No Legislated | No | No |
| Hungary | Unicameral | Yes | No Legislated | No | No |
| Latvia | Unicameral | No | No Legislated | No | No |
| Lithuania | Unicameral | Yes | No Legislated | No | No |
| Poland | Bicameral | No | Legislated Candidate Quotas | No | Yes |
| Romania | Bicameral | Yes | No Legislated | No | No |
| Slovakia | Unicameral | Yes | No Legislated | No | No |
| Slovenia | Bicameral | Yes | Legislated Candidate Quotas | No | Yes |