Chad
| 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 |
|---|---|---|---|---|---|---|
| 2011 | Plurality/Majority |
|
H | 188 | 188 | TRS |
| 2002 | Plurality/Majority |
|
H | 155 | 155 | TRS |
| 1997 | Plurality/Majority |
|
H | 125 | 125 | TRS |
