| The Nepean - 1859 (Roll: 1,431)| Nominations: Monday, 13 June 1859, Polling: Thursday, 16 June 1859 (No poll held) | | Candidate | Votes | Votes % |
|---|
| Jamison, Robert Thomas (Re-elected) | Elected unopposed | | Notes: RT Jamison was sitting MP for Cook and Westmoreland. | | Source: SMH, 14 June 1859, p. 8, col. 2. | |