Australia
| 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 |
|---|---|---|---|---|---|---|
| 2025 | Plurality/Majority | AV | 1 | 151 | 151 | Not applicable |
| 2022 | Plurality/Majority | AV | 1 | 151 | 151 | Not applicable |
| 2019 | Plurality/Majority | AV | 1 | 151 | 151 | Not applicable |
| 2016 | Plurality/Majority | AV | 1 | 150 | 150 | Not applicable |
| 2013 | Plurality/Majority | AV | 1 | 150 | 150 | Not applicable |
| 2010 | Plurality/Majority | AV | 1 | 150 | 150 | Not applicable |
| 2007 | Plurality/Majority | AV | 1 | 150 | 150 | Not applicable |
| 2004 | Plurality/Majority | AV | 1 | 150 | 150 | Not applicable |
| 2001 | Plurality/Majority | AV | 1 | 150 | 150 | Not applicable |
| 1998 | Plurality/Majority | AV | 1 | 148 | 148 | Not applicable |
| 1996 | Plurality/Majority | AV | 1 | 148 | 148 | Not applicable |
| 1993 | Plurality/Majority | AV | 1 | 147 | 147 | Not applicable |
