# Electoral results for the district of Mundaring

This is a list of electoral results for the Electoral district of Mundaring in Western Australian state elections.

## Members for Mundaring

| Member | Party | Term |
| James Moiler | Labor | 1974–1977 |
| Tom Herzfeld | Liberal | 1977–1983 |
| Gavan Troy | Labor | 1983–1989 |

## Election results
### Elections in the 1980s

1986 Western Australian state election: Mundaring :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Gavan Troy | 5,170 | 53.2 | +5.2 |
| | Liberal | Steven Hart | 4,150 | 42.7 | -5.6 |
| | Democrats | Rodney Gibbs | 398 | 4.1 | +0.5 |
| Total formal votes | Total formal votes | Total formal votes | 9,718 | 98.1 | +0.6 |
| Informal votes | Informal votes | Informal votes | 190 | 1.9 | −0.6 |
| Turnout | Turnout | Turnout | 9,908 | 91.2 | +1.9 |
| Two-party-preferred result ||||||
| | Labor | Gavan Troy | 5,374 | 55.3 | +5.2 |
| | Liberal | Steven Hart | 4,344 | 44.7 | -5.2 |
| | Labor hold | Labor hold | Swing | +5.2 | |
1983 Mundaring state by-election :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Gavan Troy | 3,645 | 50.3 | +2.3 |
| | Liberal | Tom Herzfeld | 3,387 | 46.7 | -1.6 |
| | Democrats | Bryan Scott-Courtland | 182 | 2.5 | -1.1 |
| | Independent | Francesco Nesci | 31 | 0.4 | +0.4 |
| Total formal votes | Total formal votes | Total formal votes | 7,245 | 98.6 | +1.1 |
| Informal votes | Informal votes | Informal votes | 105 | 1.4 | −1.1 |
| Turnout | Turnout | Turnout | 7,350 | 79.6 | −9.7 |
| | Labor hold | Labor hold | Swing | N/A | |
* Preferences were not distributed.
1983 Western Australian state election: Mundaring :
| Party | Party | Candidate | Votes | % |
| | Liberal | Tom Herzfeld | 3,886 | 48.3 |
| | Labor | Gavan Troy | 3,862 | 48.0 |
| | Democrats | Bryan Scott-Courtland | 292 | 3.6 |
| Total formal votes | Total formal votes | Total formal votes | 8,040 | 97.5 |
| Informal votes | Informal votes | Informal votes | 202 | 2.5 |
| Turnout | Turnout | Turnout | 8,242 | 89.3 |
| Two-party-preferred result ||||||
| | Labor | Gavan Troy | 4,028 | 50.1 |
| | Liberal | Tom Herzfeld | 4,012 | 49.9 |
| | Labor gain from Liberal | Labor gain from Liberal | Swing | |
1980 Western Australian state election: Mundaring :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Tom Herzfeld | 3,588 | 46.5 | -2.7 |
| | Labor | William Bartholomaeus | 3,427 | 44.4 | -2.5 |
| | National Country | Michael Johnson | 697 | 9.0 | +9.0 |
| Total formal votes | Total formal votes | Total formal votes | 7,712 | 97.1 | +0.7 |
| Informal votes | Informal votes | Informal votes | 226 | 2.9 | −0.7 |
| Turnout | Turnout | Turnout | 7,938 | 89.1 | −0.6 |
| Two-party-preferred result ||||||
| | Liberal | Tom Herzfeld | 4,125 | 53.5 | +1.3 |
| | Labor | William Batholomaeus | 3,587 | 46.5 | -1.3 |
| | Liberal hold | Liberal hold | Swing | +1.3 | |

### Elections in the 1970s

1977 Western Australian state election: Mundaring :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Tom Herzfeld | 3,409 | 49.2 | |
| | Labor | James Moiler | 3,250 | 46.9 | |
| | Progress | Bryan Scott-Courtland | 274 | 3.9 | |
| Total formal votes | Total formal votes | Total formal votes | 6,933 | 96.4 | |
| Informal votes | Informal votes | Informal votes | 257 | 3.6 | |
| Turnout | Turnout | Turnout | 7,190 | 89.7 | |
| Two-party-preferred result ||||||
| | Liberal | Tom Herzfeld | 3,617 | 52.2 | +3.8 |
| | Labor | James Moiler | 3,316 | 47.8 | -3.8 |
| | Liberal gain from Labor | Liberal gain from Labor | Swing | +3.8 | |
1974 Western Australian state election: Mundaring :
| Party | Party | Candidate | Votes | % |
| | Labor | James Moiler | 4,119 | 54.5 |
| | Liberal | Andrew Hugh | 2,803 | 37.1 |
| | National Alliance | Ivan Sands | 640 | 8.5 |
| Total formal votes | Total formal votes | Total formal votes | 7,562 | 97.4 |
| Informal votes | Informal votes | Informal votes | 203 | 2.6 |
| Turnout | Turnout | Turnout | 7,765 | 91.1 |
| Two-party-preferred result ||||||
| | Labor | James Moiler | 4,215 | 55.7 |
| | Liberal | Andrew Hugh | 3,347 | 44.3 |
| | Labor hold | Labor hold | Swing | |