A by-election was held for the New South Wales Legislative Assembly electorate of The Hawkesbury on 7 April 1877 because William Piddington had been appointed Colonial Treasurer in the second Parkes ministry.[1] Such ministerial by-elections were usually uncontested and on this occasion, The Hawkesbury was the only district at which the re-election of a minister was opposed.[2]
| Date | Event | |
|---|---|---|
| 23 March 1877 | Writ of election issued by the Speaker of the Legislative Assembly.[3] | |
| 4 April 1877 | Nominations | |
| 7 April 1877 | Polling day | |
| 19 April 1877 | Return of writ |