The Electoral Commission of South Australia conducted a plebiscite in the District Council of Grant and the City of Mount Gambier that asked voters whether they agree, or not, that an amalgamation of their councils should be examined.
A separate ballot paper was included in the 2022 Council Elections ballot pack that voters received.
The purpose of the non-binding plebiscite is to obtain voters' views on the proposition. The Government is not compelled to take action following the outcome of the plebiscite.
Results
District Council of Grant
| Ward | Yes | No | Informal | Total |
| Central | 219 | 2,254 | 7 | 2,480 |
| Tarpeena | 42 | 297 | 2 | 341 |
| Port MacDonnell | 17 | 362 | 1 | 380 |
| Total | 278 | 2,913 | 10 | 3,201 |
City of Mount Gambier
| Council | Yes | No | Informal | Total |
| Mount Gambier | 2,663 | 4,041 | 40 | 6,744 |