Papua New Guinea
| 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 | AV | 2 | 118 | 118 | Not applicable |
| 2017 | Plurality/Majority | AV | 2 | 111 | 111 | Not applicable |
| 2012 | Plurality/Majority | AV | 2 | 111 | 111 | Not applicable |
| 2007 | Plurality/Majority | AV | 2 | 109 | 111 | Not applicable |
| 2002 | Plurality/Majority | FPTP | 2 | 109 | 109 | Not applicable |
| 1997 | Plurality/Majority | FPTP | 2 | 109 | 109 | Not applicable |
| 1992 | Plurality/Majority | FPTP | 2 | 109 | 109 | Not applicable |
