# Electoral results for the district of Blue Mountains

Electoral district of Blue Mountains, an electoral district of the Legislative Assembly in the Australian state of New South Wales, was established in 1968.
| Election | Member | Party |
| 1968 | Harold Coates | Independent |
| 1971 | Harold Coates | Independent |
| 1973 | Harold Coates | Independent |
| 1976 | Mick Clough | Labor |
| 1978 | Mick Clough | Labor |
| 1981 | Bob Debus | Labor |
| 1984 | Bob Debus | Labor |
| 1988 | Barry Morris | Liberal |
| 1991 | Barry Morris | Liberal |
| 1995 | Bob Debus | Labor |
| 1999 | Bob Debus | Labor |
| 2003 | Bob Debus | Labor |
| 2007 | Phil Koperberg | Labor |
| 2011 | Roza Sage | Liberal |
| 2015 | Trish Doyle | Labor |
| 2019 | Trish Doyle | Labor |

## Election results
### Elections in the 2020s
#### 2023

2023 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Trish Doyle | 28,613 | 53.9 | +8.2 |
| | Liberal | Sophie-Anne Bruce | 12,640 | 23.8 | −5.7 |
| | Greens | Jenna Condie | 6,669 | 12.6 | +0.5 |
| | Animal Justice | Greg Keightley | 2,285 | 4.3 | +0.4 |
| | Informed Medical Options | Michelle Palmer | 1,901 | 3.6 | +3.6 |
| | Sustainable Australia | Richard Marschall | 948 | 1.8 | −1.1 |
| Total formal votes | Total formal votes | Total formal votes | 53,056 | 97.9 | +0.3 |
| Informal votes | Informal votes | Informal votes | 1,143 | 2.1 | −0.3 |
| Turnout | Turnout | Turnout | 54,199 | 91.7 | −1.2 |
| Two-party-preferred result ||||||
| | Labor | Trish Doyle | 35,536 | 71.9 | +8.3 |
| | Liberal | Sophie-Anne Bruce | 13,893 | 28.1 | −8.3 |
| | Labor hold | Labor hold | Swing | +8.3 | |

### Elections in the 2010s
#### 2019

2019 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Trish Doyle | 23,022 | 46.77 | +5.58 |
| | Liberal | Owen Laffin | 13,982 | 28.40 | −7.11 |
| | Greens | Kingsley Liu | 5,993 | 12.17 | −4.07 |
| | Animal Justice | Gregory Keightley | 2,008 | 4.08 | +4.08 |
| | Christian Democrats | Cameron Phillips | 1,786 | 3.63 | +0.52 |
| | Sustainable Australia | Richard Marschall | 1,496 | 3.04 | +3.04 |
| | Keep Sydney Open | Mark Pigott | 941 | 1.91 | +1.91 |
| Total formal votes | Total formal votes | Total formal votes | 49,228 | 97.52 | +0.04 |
| Informal votes | Informal votes | Informal votes | 1,250 | 2.48 | −0.04 |
| Turnout | Turnout | Turnout | 50,478 | 91.97 | −1.33 |
| Two-party-preferred result ||||||
| | Labor | Trish Doyle | 28,834 | 64.86 | +6.71 |
| | Liberal | Owen Laffin | 15,620 | 35.14 | −6.71 |
| | Labor hold | Labor hold | Swing | +6.71 | |

#### 2015

2015 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Trish Doyle | 19,995 | 41.2 | +18.7 |
| | Liberal | Roza Sage | 17,241 | 35.5 | −4.1 |
| | Greens | Alandra Tasire | 7,888 | 16.2 | −0.7 |
| | Christian Democrats | Tony Piper | 1,507 | 3.1 | −1.1 |
| | Independent | Mark Harrison | 1,470 | 3.0 | +3.0 |
| | No Land Tax | Gianna Maiorana | 450 | 0.9 | +0.9 |
| Total formal votes | Total formal votes | Total formal votes | 48,551 | 97.5 | +0.5 |
| Informal votes | Informal votes | Informal votes | 1,252 | 2.5 | −0.5 |
| Turnout | Turnout | Turnout | 49,803 | 93.3 | +0.7 |
| Two-party-preferred result ||||||
| | Labor | Trish Doyle | 25,866 | 58.1 | +13.5 |
| | Liberal | Roza Sage | 18,616 | 41.9 | −13.5 |
| | Labor gain from Liberal | Labor gain from Liberal | Swing | +13.5 | |

#### 2011

2011 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Roza Sage | 17,681 | 39.1 | +10.6 |
| | Labor | Trish Doyle | 10,253 | 22.7 | -18.1 |
| | Independent | Janet Mays | 7,804 | 17.3 | +17.3 |
| | Greens | Kerrin O'Grady | 7,647 | 16.9 | +0.7 |
| | Christian Democrats | Merv Cox | 1,841 | 4.1 | +4.1 |
| Total formal votes | Total formal votes | Total formal votes | 45,226 | 97.5 | −0.4 |
| Informal votes | Informal votes | Informal votes | 1,141 | 2.5 | +0.4 |
| Turnout | Turnout | Turnout | 46,367 | 94.0 | |
| Two-party-preferred result ||||||
| | Liberal | Roza Sage | 20,736 | 54.7 | +15.8 |
| | Labor | Trish Doyle | 17,144 | 45.3 | -15.8 |
| | Liberal gain from Labor | Liberal gain from Labor | Swing | +15.8 | |

### Elections in the 2000s
#### 2007

2007 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Phil Koperberg | 17,449 | 40.8 | -4.8 |
| | Liberal | Michael Paag | 12,179 | 28.5 | +1.2 |
| | Greens | Pippa McInnes | 6,947 | 16.2 | -1.0 |
| | Independent | Robert Stock | 4,700 | 11.0 | +11.0 |
| | Against Further Immigration | Robert Dwight | 837 | 2.0 | +2.0 |
| | Outdoor Recreation | Bob Wilcox | 675 | 1.6 | +1.6 |
| Total formal votes | Total formal votes | Total formal votes | 42,787 | 97.9 | −0.1 |
| Informal votes | Informal votes | Informal votes | 922 | 2.1 | +0.1 |
| Turnout | Turnout | Turnout | 43,709 | 93.5 | |
| Two-party-preferred result ||||||
| | Labor | Phil Koperberg | 22,413 | 61.1 | -3.7 |
| | Liberal | Michael Paag | 14,298 | 38.9 | +3.7 |
| | Labor hold | Labor hold | Swing | -3.7 | |

#### 2003

2003 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Bob Debus | 19,167 | 45.6 | +0.7 |
| | Liberal | Quentin Cook | 11,496 | 27.4 | -0.5 |
| | Greens | Pippa McInnes | 7,223 | 17.2 | +11.1 |
| | Christian Democrats | Brian Grigg | 2,224 | 5.3 | +0.6 |
| | Democrats | Esther Scholem | 906 | 2.2 | -5.0 |
| | One Nation | George Grivas | 855 | 2.0 | -4.8 |
| | Unity | Ay Tan | 159 | 0.4 | +0.4 |
| Total formal votes | Total formal votes | Total formal votes | 42,030 | 98.0 | −0.3 |
| Informal votes | Informal votes | Informal votes | 839 | 2.0 | +0.3 |
| Turnout | Turnout | Turnout | 42,869 | 92.7 | |
| Two-party-preferred result ||||||
| | Labor | Bob Debus | 24,410 | 64.8 | +3.0 |
| | Liberal | Quentin Cook | 13,283 | 35.2 | -3.0 |
| | Labor hold | Labor hold | Swing | +3.0 | |

### Elections in the 1990s
#### 1999

1999 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Bob Debus | 18,474 | 44.9 | +7.4 |
| | Liberal | Jennifer Scott | 11,464 | 27.9 | -0.6 |
| | Democrats | Stephen Lear | 2,944 | 7.2 | +0.3 |
| | One Nation | Wayne Buckley | 2,777 | 6.8 | +6.8 |
| | Greens | Adele Doust | 2,528 | 6.1 | +6.1 |
| | Christian Democrats | Shirley Grigg | 1,954 | 4.7 | +0.8 |
| | Earthsave | Catherine Bell | 619 | 1.5 | +1.5 |
| | Against Further Immigration | Margaret Anderson | 378 | 0.9 | +0.9 |
| Total formal votes | Total formal votes | Total formal votes | 41,138 | 98.3 | +1.5 |
| Informal votes | Informal votes | Informal votes | 702 | 1.7 | −1.5 |
| Turnout | Turnout | Turnout | 41,840 | 93.8 | |
| Two-party-preferred result ||||||
| | Labor | Bob Debus | 22,623 | 61.8 | +9.5 |
| | Liberal | Jennifer Scott | 13,997 | 38.2 | -9.5 |
| | Labor hold | Labor hold | Swing | +9.5 | |

#### 1995

1995 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Bob Debus | 13,412 | 37.4 | +1.1 |
| | Liberal | Jennifer Scott | 9,860 | 27.5 | -14.4 |
| | Independent | Barry Morris | 5,951 | 16.6 | +16.6 |
| | Democrats | Jon Rickard | 2,489 | 6.9 | -1.8 |
| | Independent | Carol Gaul | 2,136 | 6.0 | +6.0 |
| | Call to Australia | Warren Kinny | 1,430 | 4.0 | -0.1 |
| | Independent | William Mulcahy | 303 | 0.8 | -1.5 |
| | Natural Law | Stephanie Chambers | 180 | 0.5 | +0.5 |
| | Independent | Bert Ackland | 93 | 0.3 | +0.3 |
| Total formal votes | Total formal votes | Total formal votes | 35,854 | 96.8 | +2.4 |
| Informal votes | Informal votes | Informal votes | 1,193 | 3.2 | −2.4 |
| Turnout | Turnout | Turnout | 37,047 | 97.4 | |
| Two-party-preferred result ||||||
| | Labor | Bob Debus | 17,227 | 52.5 | +5.2 |
| | Liberal | Jennifer Scott | 15,577 | 47.5 | -5.2 |
| | Labor gain from Liberal | Labor gain from Liberal | Swing | +5.2 | |

#### 1991

1991 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Barry Morris | 13,469 | 41.9 | -3.2 |
| | Labor | Jim Angel | 11,667 | 36.3 | -7.1 |
| | Democrats | Steve Bailey | 2,799 | 8.7 | -1.3 |
| | Call to Australia | Shirley Grigg | 1,317 | 4.1 | +3.4 |
| | Independent | Bob Kennedy | 1,029 | 3.2 | +3.2 |
| | Independent | William Mulcahy | 745 | 2.3 | +2.3 |
| | Independent | Colin Slade | 744 | 2.3 | +2.3 |
| | Country Residents | Paul Arico | 373 | 1.2 | +1.2 |
| Total formal votes | Total formal votes | Total formal votes | 32,143 | 94.4 | −3.2 |
| Informal votes | Informal votes | Informal votes | 1,913 | 5.6 | +3.2 |
| Turnout | Turnout | Turnout | 34,056 | 93.5 | |
| Two-party-preferred result ||||||
| | Liberal | Barry Morris | 15,663 | 52.6 | +2.1 |
| | Labor | Jim Angel | 14,093 | 47.4 | -2.1 |
| | Liberal hold | Liberal hold | Swing | +2.1 | |

### Elections in the 1980s
#### 1988

1988 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | Barry Morris | 13,551 | 45.6 | +10.1 |
| | Labor | Bob Debus | 13,006 | 43.7 | -5.9 |
| | Democrats | Bruce Forbes | 3,192 | 10.7 | +3.2 |
| Total formal votes | Total formal votes | Total formal votes | 29,749 | 97.6 | −0.6 |
| Informal votes | Informal votes | Informal votes | 723 | 2.4 | +0.6 |
| Turnout | Turnout | Turnout | 30,472 | 93.5 | |
| Two-party-preferred result ||||||
| | Liberal | Barry Morris | 14,701 | 50.3 | +4.9 |
| | Labor | Bob Debus | 14,503 | 49.7 | -4.9 |
| | Liberal gain from Labor | Liberal gain from Labor | Swing | +4.9 | |

#### 1984

1984 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Bob Debus | 16,830 | 48.5 | -9.9 |
| | Liberal | Margaret Bradshaw | 12,962 | 37.3 | -2.2 |
| | Democrats | Steve Franklin | 2,600 | 7.5 | +7.5 |
| | Call to Australia | Bruce Fry | 2,347 | 6.8 | +6.8 |
| Total formal votes | Total formal votes | Total formal votes | 34,739 | 98.4 | +0.8 |
| Informal votes | Informal votes | Informal votes | 579 | 1.6 | −0.8 |
| Turnout | Turnout | Turnout | 35,318 | 92.3 | +0.9 |
| Two-party-preferred result ||||||
| | Labor | Bob Debus | 18,186 | 53.5 | -6.1 |
| | Liberal | Margaret Bradshaw | 15,832 | 46.5 | +6.1 |
| | Labor hold | Labor hold | Swing | -6.1 | |

#### 1981

1981 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Bob Debus | 18,682 | 58.4 | -3.5 |
| | Liberal | Reg Gillard | 12,637 | 39.5 | +39.5 |
| | Independent | Harry Marsh | 696 | 2.2 | +2.2 |
| Total formal votes | Total formal votes | Total formal votes | 32,015 | 97.6 | |
| Informal votes | Informal votes | Informal votes | 784 | 2.4 | |
| Turnout | Turnout | Turnout | 32,799 | 91.4 | |
| Two-party-preferred result ||||||
| | Labor | Bob Debus | 18,782 | 59.6 | -0.5 |
| | Liberal | Reg Gillard | 12,737 | 40.4 | +40.4 |
| | Labor hold | Labor hold | Swing | -0.5 | |

### Elections in the 1970s
#### 1978

1978 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Mick Clough | 15,187 | 61.9 | +11.4 |
| | Independent | Harold Coates | 8,050 | 32.8 | -16.7 |
| | Democrats | William Player | 1,307 | 5.3 | +5.3 |
| Total formal votes | Total formal votes | Total formal votes | 24,544 | 98.4 | +0.1 |
| Informal votes | Informal votes | Informal votes | 410 | 1.6 | −0.1 |
| Turnout | Turnout | Turnout | 24,954 | 93.0 | −0.5 |
| Two-candidate-preferred result ||||||
| | Labor | Mick Clough | 15,841 | 64.5 | +14.0 |
| | Independent | Harold Coates | 8,703 | 35.5 | -14.0 |
| | Labor hold | Labor hold | Swing | +14.0 | |

#### 1976

1976 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Mick Clough | 11,957 | 50.5 | +8.6 |
| | Independent | Harold Coates | 11,721 | 49.5 | -5.4 |
| Total formal votes | Total formal votes | Total formal votes | 23,678 | 98.3 | −0.3 |
| Informal votes | Informal votes | Informal votes | 410 | 1.7 | +0.3 |
| Turnout | Turnout | Turnout | 24,088 | 93.5 | −0.5 |
| | Labor gain from Independent | Labor gain from Independent | Swing | +7.0 | |

#### 1973

1973 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Independent | Harold Coates | 1,229 | 54.9 | +0.1 |
| | Labor | Mick Clough | 9,339 | 41.9 | +2.5 |
| | Democratic Labor | Joseph Conroy | 709 | 3.2 | -0.8 |
| Total formal votes | Total formal votes | Total formal votes | 22,277 | 98.6 | |
| Informal votes | Informal votes | Informal votes | 314 | 1.4 | |
| Turnout | Turnout | Turnout | 22,591 | 94.0 | |
| Two-candidate-preferred result ||||||
| | Independent | Harold Coates | 12,584 | 56.5 | -1.2 |
| | Labor | Mick Clough | 9,693 | 43.5 | +1.2 |
| | Independent hold | Independent hold | Swing | -1.2 | |

#### 1971

1971 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Independent | Harold Coates | 11,271 | 54.8 | -2.0 |
| | Labor | James Collins | 8,101 | 39.4 | -1.1 |
| | Democratic Labor | Kenneth Brown | 812 | 3.9 | +1.2 |
| | Independent | Frederick Lamb | 399 | 1.9 | +1.9 |
| Total formal votes | Total formal votes | Total formal votes | 20,583 | 98.8 | |
| Informal votes | Informal votes | Informal votes | 248 | 1.2 | |
| Turnout | Turnout | Turnout | 20,831 | 94.9 | |
| Two-candidate-preferred result ||||||
| | Independent | Harold Coates | 11,877 | 57.7 | -0.5 |
| | Labor | James Collins | 8,786 | 42.3 | +0.5 |
| | Independent hold | Independent hold | Swing | -0.5 | |

### Elections in the 1960s
#### 1968

1968 New South Wales state election: Blue Mountains :
| Party | Party | Candidate | Votes | % | ±% |
| | Independent | Harold Coates | 9,991 | 56.1 | +10.1 |
| | Labor | James Robson | 7,118 | 40.5 | -6.9 |
| | Democratic Labor | David Westgate | 468 | 2.7 | -3.9 |
| Total formal votes | Total formal votes | Total formal votes | 17,577 | 98.5 | |
| Informal votes | Informal votes | Informal votes | 272 | 1.5 | |
| Turnout | Turnout | Turnout | 17,849 | 95.6 | |
| Two-candidate-preferred result ||||||
| | Independent | Harold Coates | 10,247 | 58.3 | +6.9 |
| | Labor | James Robson | 7,330 | 41.7 | -6.9 |
| | Independent win | Independent win | (new seat) | (new seat) | (new seat) |