Burundi
| 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 |
|---|---|---|---|---|---|---|
| 2020 | PR | List PR | 1 | 100 | 124 | TRS |
| 2015 | PR | List PR | 1 | 100 | 121 | TRS |
| 2010 | PR | List PR | 1 | 100 | 106 | TRS |
| 2005 | PR | List PR | 1 | 100 | 118 | TRS |
| 1993 | PR | List PR | 1 | 81 | 81 | TRS |
