1866 Illawarra colonial by-election
# 1866 Illawarra colonial by-election

A by-election was held for the New South Wales Legislative Assembly electorate of Illawarra on 10 September 1866 following the resignation of Patrick Osborne.

## Dates

| Date | Event |
| - | - |
| 24 August 1866 | Patrick Osborne resigned. |
| 28 August 1860 | Writ of election issued by the Speaker of the Legislative Assembly. |
| 6 September 1866 | Nominations |
| 10 September 1866 | Polling day |
| 18 September 1866 | Return of writ |

## Candidates

John Stewart had been the unsuccessful candidate at the 1860 election, receiving 46.% of the vote, and again at the 1864 election receiving 43.3% of the vote.

## Result

1866 Illawarra by-election Monday 10 September :

| Candidate | Candidate | Votes | % |
| - | - | - | - |
| John Stewart (elected) | John Stewart (elected) | 460 | 56.7 |
| Joseph Wilshire | Joseph Wilshire | 352 | 43.3 |
| Total formal votes | Total formal votes | 812 | 100.0 |
| Informal votes | Informal votes | 0 | 0.0 |
| Turnout | Turnout | 812 | 63.1 |
