Guinea-Bissau
| Year | Electoral system family | Electoral system for national legislature | Number of tiers | Legislative size (directly elected) | Legislative size (voting members) | Electoral system for the president |
|---|---|---|---|---|---|---|
| 2023 | PR | List PR | 1.00 | 102 | 102 | TRS |
| 2019 | PR | List PR | 1 | 102 | 102 | TRS |
| 2014 | PR | List PR | 1 | 102 | 102 | TRS |
| 2008 | PR | List PR | 1 | 100 | 100 | TRS |
| 2004 | PR | List PR | 1 | 102 | 102 | TRS |
| 1999 | PR | List PR | 1 | 102 | 102 | TRS |
| 1994 | PR | List PR | 1 | 100 | 100 | TRS |
