Cook Islands
| 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 |
|---|---|---|---|---|---|---|
| 2022 | Plurality/Majority | FPTP | 1 | 24 | 24 | Not applicable |
| 2018 | Plurality/Majority | FPTP | 1 | 24 | 24 | Not applicable |
| 2014 | Plurality/Majority | FPTP | 1 | 24 | 24 | Not applicable |
| 2010 | Plurality/Majority | FPTP | 1 | 24 | 24 | Not applicable |
| 2006 | Plurality/Majority | FPTP | 1 | 24 | 24 | Not applicable |
| 2004 | Plurality/Majority | 1 | 24 | 24 | Not applicable | |
