Benin
| 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 | 109 | 109 | TRS |
| 2019 | PR | List PR | 1 | 83 | 83 | TRS |
| 2015 | PR | List PR | 1 | 83 | 83 | TRS |
| 2011 | PR | List PR | 1 | 83 | 83 | TRS |
| 2007 | PR | List PR | 1 | 83 | 83 | TRS |
| 2003 | PR | List PR | 1 | 83 | 83 | TRS |
| 1999 | PR | List PR | 1 | 83 | 83 | TRS |
| 1995 | PR | List PR | 1 | 83 | 83 | TRS |
| 1991 | 64.00 | List PR | 1 | 64 | 64 | TRS |
