A by-election was held for the New South Wales Legislative Assembly electorate of East Maitland on 15 September 1859 because the seat of Joseph Chambers was declared vacant because he had accepted appointment as a Crown Prosecutor at Quarter Sessions.[1]
| Date | Event | |
|---|---|---|
| 26 August 1859 | Joseph Chambers appointed Crown Prosecutor. | |
| 31 August 1859 | Joseph Chambers' seat declared vacant.[2] | |
| 1 September 1859 | Writ of election issued by the Speaker of the Legislative Assembly.[3] | |
| 12 September 1859 | Nominations | |
| 15 September 1859 | Polling day | |
| 20 September 1859 | Return of writ |