Montserrat
| 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 |
|---|---|---|---|---|---|---|
| 2019 | Plurality/Majority | TRS | 1 | 9 | 11 | Not applicable |
| 2014 | Plurality/Majority | TRS | 1 | 9 | 11 | Not applicable |
| 2009 | Plurality/Majority | TRS | 1 | 9 | 11 | Not applicable |
| 2006 | Plurality/Majority | TRS | 1 | 9 | 11 | Not applicable |
| 2001 | Plurality/Majority | TRS | 1 | 9 | 11 | Not applicable |
| 1996 | Plurality/Majority | FPTP | 1 | 7 | 9 | Not applicable |
| 1991 | Plurality/Majority | FPTP | 1 | 7 | 9 | Not applicable |
