Comoros
| 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 | Plurality/Majority | TRS | 1 | 24 | 33 | TRS |
| 2015 | Plurality/Majority | TRS | 1 | 24 | 33 | TRS |
| 2009 | Plurality/Majority | TRS | 1 | 24 | 33 | TRS |
| 2004 | Plurality/Majority | TRS | 1 | 24 | 33 | TRS |
