Dominican Republic
| 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 | PR | List PR | 3 | 190 | 190 | TRS |
| 2016 | PR | List PR | 3 | 190 | 190 | TRS |
| 2010 | PR | List PR | 2 | 183 | 183 | TRS |
| 2006 | PR | List PR | 2 | 178 | 178 | TRS |
| 2002 | PR | List PR | 2 | 150 | 150 | TRS |
| 1998 | PR | List PR | 2 | 149 | 149 | TRS |
| 1994 | PR | List PR | 2 | 120 | 120 | TRS |
