# Electoral results for the Division of Cowper

This is a list of electoral results for the Division of Cowper in Australian federal elections from the electorate's creation in 1901 until the present.

## Members

| Member | Party | Term |
| Francis Clarke | Protectionist | 1901–1903 |
| Henry Lee | Free Trade, Anti-Socialist | 1903–1906 |
| John Thomson | Protectionist | 1906–1909 |
| John Thomson | Liberal | 1909–1916 |
| John Thomson | Nationalist | 1916–1919 |
| (Sir) Earle Page | Country | 1919–1961 |
| Frank McGuren | Labor | 1961–1963 |
| Ian Robinson | Country, National | 1963–1984 |
| Garry Nehl | National | 1984–2001 |
| Luke Hartsuyker | National | 2001–2019 |
| Pat Conaghan | National | 2019–present |

## Election results
### Elections in the 2020s
#### 2022

2022 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Pat Conaghan | 43,909 | 39.47 | −7.60 |
| | Independent | Caz Heise | 29,206 | 26.26 | +26.26 |
| | Labor | Keith McMullen | 15,566 | 13.99 | +0.20 |
| | One Nation | Faye Aspiotis | 9,047 | 8.13 | +8.13 |
| | Greens | Timothy Nott | 6,518 | 5.86 | −0.08 |
| | Liberal Democrats | Simon Chaseling | 4,316 | 3.88 | +3.88 |
| | United Australia | Joshua Fairhall | 2,674 | 2.40 | −0.62 |
| Total formal votes | Total formal votes | Total formal votes | 111,236 | 95.07 | +2.85 |
| Informal votes | Informal votes | Informal votes | 5,770 | 4.93 | −2.85 |
| Turnout | Turnout | Turnout | 117,006 | 90.22 | −1.81 |
| Notional two-party-preferred count ||||||
| | National | Pat Conaghan | 66,153 | 59.47 | −2.41 |
| | Labor | Keith McMullen | 45,083 | 40.53 | +2.41 |
| Two-candidate-preferred result ||||||
| | National | Pat Conaghan | 58,204 | 52.32 | −4.47 |
| | Independent | Caz Heise | 53,032 | 47.68 | +47.68 |
| | National hold | National hold | | | |

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

2019 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Pat Conaghan | 49,668 | 47.07 | +1.10 |
| | Independent | Rob Oakeshott | 25,847 | 24.49 | −1.80 |
| | Labor | Andrew Woodward | 14,551 | 13.79 | +0.18 |
| | Greens | Lauren Edwards | 6,264 | 5.94 | −0.73 |
| | United Australia | Alexander Stewart | 3,188 | 3.02 | +3.02 |
| | Christian Democrats | Ruth Meads | 2,383 | 2.26 | −1.16 |
| | Animal Justice | Kellie Pearce | 2,176 | 2.06 | +2.06 |
| | Independent | Allan Green | 1,451 | 1.37 | +1.37 |
| Total formal votes | Total formal votes | Total formal votes | 105,528 | 92.22 | −2.63 |
| Informal votes | Informal votes | Informal votes | 8,898 | 7.78 | +2.63 |
| Turnout | Turnout | Turnout | 114,426 | 92.03 | −0.20 |
| Notional two-party-preferred count ||||||
| | National | Pat Conaghan | 65,302 | 61.88 | −0.70 |
| | Labor | Andrew Woodward | 40,266 | 38.12 | +0.70 |
| Two-candidate-preferred result ||||||
| | National | Pat Conaghan | 59,932 | 56.79 | +2.23 |
| | Independent | Rob Oakeshott | 45,596 | 43.21 | −2.23 |
| | National hold | National hold | Swing | +2.23 | |

#### 2016

2016 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Luke Hartsuyker | 47,559 | 45.97 | −8.10 |
| | Independent | Rob Oakeshott | 27,200 | 26.29 | +26.29 |
| | Labor | Damian Wood | 14,079 | 13.61 | −9.97 |
| | Greens | Carol Vernon | 6,901 | 6.67 | −3.89 |
| | Christian Democrats | Wayne Lawrence | 3,538 | 3.42 | +0.95 |
| | Independent | John Arkan | 3,457 | 3.34 | +3.34 |
| | Citizens Electoral Council | Michael Gough | 726 | 0.70 | +0.70 |
| Total formal votes | Total formal votes | Total formal votes | 103,460 | 94.85 | +0.37 |
| Informal votes | Informal votes | Informal votes | 5,613 | 5.15 | −0.37 |
| Turnout | Turnout | Turnout | 109,073 | 92.23 | −0.78 |
| Notional two-party-preferred count ||||||
| | National | Luke Hartsuyker | 64,743 | 62.58 | −0.65 |
| | Labor | Damian Wood | 38,717 | 37.42 | +0.65 |
| Two-candidate-preferred result ||||||
| | National | Luke Hartsuyker | 56,443 | 54.56 | −13.15 |
| | Independent | Rob Oakeshott | 47,017 | 45.44 | +45.44 |
| | National hold | National hold | Swing | N/A | |

#### 2013

2013 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Luke Hartsuyker | 45,820 | 53.05 | +2.28 |
| | Labor | Alfredo Navarro | 21,910 | 25.37 | −2.45 |
| | Greens | Carol Vernon | 10,685 | 12.37 | +3.28 |
| | Palmer United | Rodney Jeanneret | 5,739 | 6.64 | +6.64 |
| | Christian Democrats | Bethany McAlpine | 2,224 | 2.57 | +0.18 |
| Total formal votes | Total formal votes | Total formal votes | 86,378 | 94.72 | −0.95 |
| Informal votes | Informal votes | Informal votes | 4,813 | 5.28 | +0.95 |
| Turnout | Turnout | Turnout | 91,191 | 93.86 | −0.19 |
| Two-party-preferred result ||||||
| | National | Luke Hartsuyker | 53,303 | 61.71 | +2.44 |
| | Labor | Alfredo Navarro | 33,075 | 38.29 | −2.44 |
| | National hold | National hold | Swing | +2.44 | |

#### 2010

2010 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Luke Hartsuyker | 43,242 | 50.77 | +4.22 |
| | Labor | Paul Sekfy | 23,696 | 27.82 | −10.25 |
| | Independent | John Arkan | 8,446 | 9.92 | +9.92 |
| | Greens | Dominic King | 7,745 | 9.09 | −1.95 |
| | Christian Democrats | Deborah Lions | 2,039 | 2.39 | −0.48 |
| Total formal votes | Total formal votes | Total formal votes | 85,168 | 95.67 | −0.36 |
| Informal votes | Informal votes | Informal votes | 3,857 | 4.33 | +0.36 |
| Turnout | Turnout | Turnout | 89,025 | 94.06 | −1.02 |
| Two-party-preferred result ||||||
| | National | Luke Hartsuyker | 50,477 | 59.27 | +8.03 |
| | Labor | Paul Sekfy | 34,691 | 40.73 | −8.03 |
| | National hold | National hold | Swing | +8.03 | |

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

2007 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Luke Hartsuyker | 39,444 | 46.54 | −3.92 |
| | Labor | Paul Sekfy | 32,276 | 38.08 | +6.43 |
| | Greens | John Carty | 9,359 | 11.04 | +2.15 |
| | Christian Democrats | Deborah Lions | 2,428 | 2.86 | +2.86 |
| | Family First | Flavia Arapi-Nunez | 759 | 0.90 | +0.70 |
| | Liberty & Democracy | Leon Belgrave | 491 | 0.58 | +0.58 |
| Total formal votes | Total formal votes | Total formal votes | 84,757 | 96.02 | +0.36 |
| Informal votes | Informal votes | Informal votes | 3,510 | 3.98 | −0.36 |
| Turnout | Turnout | Turnout | 88,267 | 95.15 | +0.48 |
| Two-party-preferred result ||||||
| | National | Luke Hartsuyker | 43,423 | 51.23 | −5.52 |
| | Labor | Paul Sekfy | 41,334 | 48.77 | +5.52 |
| | National hold | National hold | Swing | −5.52 | |

#### 2004

2004 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Luke Hartsuyker | 38,998 | 50.20 | +20.31 |
| | Labor | Allan Williams | 24,873 | 32.02 | −0.29 |
| | Greens | John Carty | 7,239 | 9.32 | +3.80 |
| | One Nation | Allan Stokes | 3,098 | 3.99 | −3.07 |
| | Lower Excise Fuel | Norm Mann | 2,007 | 2.58 | −0.02 |
| | Democrats | Trevor Kapeen | 1,468 | 1.89 | −0.82 |
| Total formal votes | Total formal votes | Total formal votes | 77,683 | 95.96 | +0.07 |
| Informal votes | Informal votes | Informal votes | 3,273 | 4.04 | −0.07 |
| Turnout | Turnout | Turnout | 80,956 | 95.19 | −0.12 |
| Two-party-preferred result ||||||
| | National | Luke Hartsuyker | 43,853 | 56.45 | +1.72 |
| | Labor | Allan Williams | 33,830 | 43.55 | −1.72 |
| | National hold | National hold | Swing | +1.72 | |

#### 2001

2001 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Jenny Bonfield | 23,615 | 32.31 | −1.90 |
| | National | Luke Hartsuyker | 21,846 | 29.89 | −11.87 |
| | Liberal | Philip Neuss | 11,663 | 15.95 | +15.95 |
| | One Nation | Allan Stokes | 5,164 | 7.06 | −7.18 |
| | Greens | Jillian Cranny | 4,033 | 5.52 | +1.48 |
| | Democrats | Michael Fenton | 1,978 | 2.71 | −0.71 |
| | Lower Excise Fuel | John Maguire | 1,904 | 2.60 | +2.60 |
| | Christian Democrats | Bruce Korn | 1,472 | 2.01 | +1.79 |
| | Independent | John Willey | 973 | 1.33 | +1.33 |
| | Independent | Paul van Bladel | 452 | 0.62 | +0.62 |
| Total formal votes | Total formal votes | Total formal votes | 73,100 | 95.89 | −1.34 |
| Informal votes | Informal votes | Informal votes | 3,131 | 4.11 | +1.34 |
| Turnout | Turnout | Turnout | 76,231 | 96.05 | |
| Two-party-preferred result ||||||
| | National | Luke Hartsuyker | 40,006 | 54.73 | −0.98 |
| | Labor | Jenny Bonfield | 33,094 | 45.27 | +0.98 |
| | National hold | National hold | Swing | −0.98 | |

### Elections in the 1990s
#### 1998

1998 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Garry Nehl | 30,810 | 42.01 | −14.28 |
| | Labor | Paul Sekfy | 24,213 | 33.02 | +1.03 |
| | One Nation | John Willey | 11,234 | 15.32 | +15.32 |
| | Greens | Jillian Cranny | 2,960 | 4.04 | −2.20 |
| | Democrats | Paul Anthony Corben | 2,570 | 3.50 | −1.98 |
| | Independent | Mark Spencer | 1,550 | 2.11 | +2.11 |
| Total formal votes | Total formal votes | Total formal votes | 73,337 | 97.26 | −0.44 |
| Informal votes | Informal votes | Informal votes | 2,068 | 2.74 | +0.44 |
| Turnout | Turnout | Turnout | 75,405 | 95.19 | −0.99 |
| Two-party-preferred result ||||||
| | National | Garry Nehl | 41,335 | 56.36 | −5.20 |
| | Labor | Paul Sekfy | 32,002 | 43.64 | +5.20 |
| | National hold | National hold | Swing | −5.20 | |

#### 1996

1996 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Garry Nehl | 40,825 | 56.30 | +8.24 |
| | Labor | Paul Sekfy | 23,195 | 31.98 | −7.12 |
| | Greens | Jillian Cranny | 4,525 | 6.24 | +1.56 |
| | Democrats | Allan Quartly | 3,974 | 5.48 | +1.89 |
| Total formal votes | Total formal votes | Total formal votes | 72,519 | 97.70 | −0.13 |
| Informal votes | Informal votes | Informal votes | 1,709 | 2.30 | +0.13 |
| Turnout | Turnout | Turnout | 74,228 | 96.19 | +0.37 |
| Two-party-preferred result ||||||
| | National | Garry Nehl | 44,465 | 61.56 | +7.50 |
| | Labor | Paul Sekfy | 27,766 | 38.44 | −7.50 |
| | National hold | National hold | Swing | +7.50 | |

#### 1993

1993 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Garry Nehl | 32,772 | 48.05 | +2.10 |
| | Labor | Paul Sekfy | 26,670 | 39.10 | +6.97 |
| | Greens | Jillian Cranny | 3,191 | 4.68 | +2.30 |
| | Democrats | Trevor Pike | 2,448 | 3.59 | −6.62 |
| | Confederate Action | Darrel Wallbridge | 1,714 | 2.51 | +2.51 |
| | Natural Law | Roy Forrester | 968 | 1.42 | +1.42 |
| | Citizens Electoral Council | Nigel Gleeson | 439 | 0.64 | +0.64 |
| Total formal votes | Total formal votes | Total formal votes | 68,202 | 97.83 | −0.23 |
| Informal votes | Informal votes | Informal votes | 1,512 | 2.17 | 0.23 |
| Turnout | Turnout | Turnout | 69,714 | 95.82 | |
| Two-party-preferred result ||||||
| | National | Garry Nehl | 36,846 | 54.06 | −1.50 |
| | Labor | Paul Sekfy | 31,311 | 45.94 | +1.50 |
| | National hold | National hold | Swing | −1.50 | |

#### 1990

1990 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Garry Nehl | 35,379 | 47.5 | −2.8 |
| | Labor | John Murphy | 23,219 | 31.2 | −4.1 |
| | Democrats | Trevor Pike | 7,353 | 9.9 | +3.7 |
| | Independent | David Rees | 6,640 | 8.9 | +2.4 |
| | Cowper Greens | Angelique Meers | 1,906 | 2.6 | +2.6 |
| Total formal votes | Total formal votes | Total formal votes | 74,497 | 98.1 | |
| Informal votes | Informal votes | Informal votes | 1,476 | 1.9 | |
| Turnout | Turnout | Turnout | 75,973 | 95.4 | |
| Two-party-preferred result ||||||
| | National | Garry Nehl | 42,647 | 57.3 | −1.8 |
| | Labor | John Murphy | 31,722 | 42.7 | +1.8 |
| | National hold | National hold | Swing | −1.8 | |

### Elections in the 1980s
#### 1987

1987 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Garry Nehl | 33,328 | 50.3 | +20.2 |
| | Labor | John Murphy | 23,393 | 35.3 | −5.8 |
| | Independent | David Rees | 4,273 | 6.5 | +3.1 |
| | Democrats | Dorothy Thompson | 4,122 | 6.2 | +3.3 |
| | Independent | Max Austin | 1,132 | 1.7 | +1.7 |
| Total formal votes | Total formal votes | Total formal votes | 66,248 | 97.2 | |
| Informal votes | Informal votes | Informal votes | 1,929 | 2.8 | |
| Turnout | Turnout | Turnout | 68,177 | 93.5 | |
| Two-party-preferred result ||||||
| | National | Garry Nehl | 39,150 | 59.1 | +5.0 |
| | Labor | John Murphy | 27,089 | 40.9 | −5.0 |
| | National hold | National hold | Swing | +5.0 | |

#### 1984

1984 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Joe Moran | 24,672 | 41.1 | +0.3 |
| | National | Garry Nehl | 18,110 | 30.1 | −20.4 |
| | Liberal | Peter Simpson | 12,032 | 20.0 | +20.0 |
| | Independent | David Rees | 2,027 | 3.4 | +3.4 |
| | Democrats | Alfred Tozer | 1,729 | 2.9 | −5.9 |
| | Independent | Keith Jervis | 1,499 | 2.5 | +2.5 |
| Total formal votes | Total formal votes | Total formal votes | 60,069 | 96.0 | |
| Informal votes | Informal votes | Informal votes | 2,523 | 4.0 | |
| Turnout | Turnout | Turnout | 62,592 | 95.4 | |
| Two-party-preferred result ||||||
| | National | Garry Nehl | 32,491 | 54.1 | −0.1 |
| | Labor | Joe Moran | 27,565 | 45.9 | +0.1 |
| | National hold | National hold | Swing | −0.1 | |

#### 1983

1983 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National | Ian Robinson | 38,351 | 48.4 | −6.1 |
| | Labor | Joseph Moran | 33,986 | 42.9 | +2.5 |
| | Democrats | Peter Brown | 6,962 | 8.8 | +3.8 |
| Total formal votes | Total formal votes | Total formal votes | 79,299 | 98.8 | |
| Informal votes | Informal votes | Informal votes | 982 | 1.2 | |
| Turnout | Turnout | Turnout | 80,281 | 95.2 | |
| Two-party-preferred result ||||||
| | National | Ian Robinson | 41,305 | 52.1 | −4.4 |
| | Labor | Joseph Moran | 37,994 | 47.9 | +4.4 |
| | National hold | National hold | Swing | −4.4 | |

#### 1980

1980 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National Country | Ian Robinson | 39,374 | 54.5 | −9.4 |
| | Labor | Valma Melville | 29,192 | 40.4 | +4.3 |
| | Democrats | John Pierce | 3,631 | 5.0 | +5.0 |
| Total formal votes | Total formal votes | Total formal votes | 72,197 | 98.6 | |
| Informal votes | Informal votes | Informal votes | 995 | 1.4 | |
| Turnout | Turnout | Turnout | 73,192 | 94.9 | |
| Two-party-preferred result ||||||
| | National Country | Ian Robinson | | 56.5 | −7.4 |
| | Labor | Valma Melville | | 43.5 | +7.4 |
| | National Country hold | National Country hold | Swing | −7.4 | |

### Elections in the 1970s
#### 1977

1977 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National Country | Ian Robinson | 41,015 | 63.9 | +2.5 |
| | Labor | Colin Clague | 23,221 | 36.1 | +1.5 |
| Total formal votes | Total formal votes | Total formal votes | 64,236 | 98.1 | |
| Informal votes | Informal votes | Informal votes | 1,231 | 1.9 | |
| Turnout | Turnout | Turnout | 65,467 | 95.9 | |
| | National Country hold | National Country hold | Swing | +0.5 | |

#### 1975

1975 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | National Country | Ian Robinson | 34,948 | 62.3 | +6.5 |
| | Labor | Colin Clague | 18,893 | 33.7 | −8.7 |
| | Independent | John McLachlan | 1,662 | 3.0 | +3.0 |
| | Independent | John Holcombe | 574 | 1.0 | +1.0 |
| Total formal votes | Total formal votes | Total formal votes | 56,077 | 98.4 | |
| Informal votes | Informal votes | Informal votes | 654 | 1.6 | |
| Turnout | Turnout | Turnout | 56,731 | 95.4 | |
| Two-party-preferred result ||||||
| | National Country | Ian Robinson | | 64.3 | +7.7 |
| | Labor | Colin Clague | | 33.7 | −7.7 |
| | National Country hold | National Country hold | Swing | +7.7 | |

#### 1974

1974 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Ian Robinson | 29,889 | 55.8 | +6.4 |
| | Labor | Thomas Cronin | 22,730 | 42.4 | −2.4 |
| | Australia | James Davies | 585 | 1.1 | −1.9 |
| | Independent | Raymond Hardy | 391 | 0.7 | +0.7 |
| Total formal votes | Total formal votes | Total formal votes | 53,595 | 98.9 | |
| Informal votes | Informal votes | Informal votes | 620 | 1.1 | |
| Turnout | Turnout | Turnout | 54,215 | 96.2 | |
| Two-party-preferred result ||||||
| | Country | Ian Robinson | | 56.6 | +4.1 |
| | Labor | Thomas Cronin | | 43.4 | −4.1 |
| | Country hold | Country hold | Swing | −4.1 | |

#### 1972

1972 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Ian Robinson | 23,437 | 49.4 | −13.5 |
| | Labor | Thomas Cronin | 21,235 | 44.8 | +44.8 |
| | Australia | John Maynes | 1,410 | 3.0 | +3.0 |
| | Democratic Labor | David Cumming | 1,349 | 2.8 | +2.8 |
| Total formal votes | Total formal votes | Total formal votes | 47,431 | 98.7 | |
| Informal votes | Informal votes | Informal votes | 633 | 1.3 | |
| Turnout | Turnout | Turnout | 48,064 | 96.2 | |
| Two-party-preferred result ||||||
| | Country | Ian Robinson | | 52.5 | −13.0 |
| | Labor | Thomas Cronin | | 47.5 | +47.5 |
| | Country hold | Country hold | Swing | −13.0 | |

### Elections in the 1960s
#### 1969

1969 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Ian Robinson | 27,681 | 62.9 | −1.6 |
| | Independent | Neil Royal | 10,351 | 23.5 | +23.5 |
| | Independent | Brian Richards | 5,965 | 13.6 | +13.6 |
| Total formal votes | Total formal votes | Total formal votes | 43,977 | 98.5 | |
| Informal votes | Informal votes | Informal votes | 649 | 1.5 | |
| Turnout | Turnout | Turnout | 44,646 | 95.5 | |
| Two-party-preferred result ||||||
| | Country | Ian Robinson | | 65.5 | −1.6 |
| | Independent | Neil Royal | | 34.5 | +34.5 |
| | Country hold | Country hold | Swing | −1.6 | |

#### 1966

1966 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Ian Robinson | 24,602 | 63.5 | +10.5 |
| | Labor | Burwood Gillett | 13,044 | 33.7 | −13.3 |
| | Liberal Reform Group | William Tredinnick | 1,076 | 2.8 | +2.8 |
| Total formal votes | Total formal votes | Total formal votes | 38,722 | 98.3 | |
| Informal votes | Informal votes | Informal votes | 680 | 1.7 | |
| Turnout | Turnout | Turnout | 39,402 | 96.7 | |
| Two-party-preferred result ||||||
| | Country | Ian Robinson | | 64.2 | +11.2 |
| | Labor | Burwood Gillett | | 35.8 | −11.2 |
| | Country hold | Country hold | Swing | +11.2 | |

#### 1963

1963 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Ian Robinson | 20,556 | 53.0 | +13.1 |
| | Labor | Frank McGuren | 18,237 | 47.0 | +1.1 |
| Total formal votes | Total formal votes | Total formal votes | 38,793 | 99.4 | |
| Informal votes | Informal votes | Informal votes | 240 | 0.6 | |
| Turnout | Turnout | Turnout | 39,033 | 96.9 | |
| | Country gain from Labor | Country gain from Labor | Swing | +4.8 | |

#### 1961

1961 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Labor | Frank McGuren | 17,567 | 45.9 | +9.7 |
| | Country | Sir Earle Page | 15,259 | 39.9 | −14.9 |
| | Independent | Neville Weiley | 5,435 | 14.2 | +14.2 |
| Total formal votes | Total formal votes | Total formal votes | 38,261 | 98.1 | |
| Informal votes | Informal votes | Informal votes | 725 | 1.9 | |
| Turnout | Turnout | Turnout | 38,986 | 96.4 | |
| Two-party-preferred result ||||||
| | Labor | Frank McGuren | 19,803 | 51.8 | +12.9 |
| | Country | Sir Earle Page | 18,458 | 48.2 | −12.9 |
| | Labor gain from Country | Labor gain from Country | Swing | +12.9 | |

### Elections in the 1950s
#### 1958

1958 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Sir Earle Page | 21,152 | 54.8 | −45.2 |
| | Labor | Frank McGuren | 13,980 | 36.2 | +36.2 |
| | Democratic Labor | John Kellett | 3,437 | 8.9 | +8.9 |
| Total formal votes | Total formal votes | Total formal votes | 38,569 | 98.0 | |
| Informal votes | Informal votes | Informal votes | 795 | 2.0 | |
| Turnout | Turnout | Turnout | 39,364 | 96.1 | |
| Two-party-preferred result ||||||
| | Country | Sir Earle Page | | 61.1 | −38.9 |
| | Labor | Frank McGuren | | 38.9 | +38.9 |
| | Country hold | Country hold | Swing | −38.9 | |

#### 1955

1955 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Sir Earle Page | unopposed | | |
| | Country hold | Country hold | Swing | | |

#### 1954

1954 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Sir Earle Page | 21,767 | 58.8 | −2.2 |
| | Labor | William Bailey | 14,751 | 39.8 | +2.8 |
| | Communist | Kenneth Harding | 503 | 1.4 | +1.4 |
| Total formal votes | Total formal votes | Total formal votes | 37,021 | 99.1 | |
| Informal votes | Informal votes | Informal votes | 330 | 0.9 | |
| Turnout | Turnout | Turnout | 37,351 | 95.7 | |
| Two-party-preferred result ||||||
| | Country | Sir Earle Page | | 58.9 | −3.1 |
| | Labor | William Bailey | | 41.1 | +3.1 |
| | Country hold | Country hold | Swing | −3.1 | |

#### 1951

1951 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Sir Earle Page | 22,632 | 61.0 | −0.7 |
| | Labor | William Bailey | 13,743 | 37.0 | −1.3 |
| | Independent | William Tomlinson | 724 | 2.0 | +2.0 |
| Total formal votes | Total formal votes | Total formal votes | 37,099 | 98.9 | |
| Informal votes | Informal votes | Informal votes | 425 | 1.1 | |
| Turnout | Turnout | Turnout | 37,524 | 96.7 | |
| Two-party-preferred result ||||||
| | Country | Sir Earle Page | | 62.0 | +0.3 |
| | Labor | William Bailey | | 38.0 | −0.3 |
| | Country hold | Country hold | Swing | +0.3 | |

### Elections in the 1940s
#### 1949

1949 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Sir Earle Page | 22,791 | 61.7 | +0.9 |
| | Labor | Louis Jabour | 14,134 | 38.3 | +3.0 |
| Total formal votes | Total formal votes | Total formal votes | 36,925 | 98.9 | |
| Informal votes | Informal votes | Informal votes | 404 | 1.1 | |
| Turnout | Turnout | Turnout | 47,329 | 96.9 | |
| | Country hold | Country hold | Swing | −1.0 | |

#### 1946

1946 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Sir Earle Page | 31,785 | 57.2 | +11.7 |
| | Labor | George Mitchell | 21,253 | 38.2 | −2.3 |
| | Independent | Richard Williams | 2,544 | 4.6 | +4.6 |
| Total formal votes | Total formal votes | Total formal votes | 55,582 | 99.6 | |
| Informal votes | Informal votes | Informal votes | 798 | 1.4 | |
| Turnout | Turnout | Turnout | 56,380 | 95.2 | |
| Two-party-preferred result ||||||
| | Country | Sir Earle Page | | 59.5 | +6.9 |
| | Labor | George Mitchell | | 40.5 | −6.9 |
| | Country hold | Country hold | Swing | +6.9 | |

#### 1943

1943 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Sir Earle Page | 24,017 | 45.5 | −8.2 |
| | Labor | John Howard | 21,375 | 40.5 | +18.6 |
| | Independent | Joseph McElhone | 5,403 | 10.2 | −6.0 |
| | One Parliament | Alexander Moore | 1,936 | 3.7 | +3.7 |
| Total formal votes | Total formal votes | Total formal votes | 52,731 | 98.7 | |
| Informal votes | Informal votes | Informal votes | 690 | 1.3 | |
| Turnout | Turnout | Turnout | 53,421 | 97.0 | |
| Two-party-preferred result ||||||
| | Country | Sir Earle Page | 27,736 | 52.6 | −12.3 |
| | Labor | John Howard | 24,995 | 47.4 | +12.3 |
| | Country hold | Country hold | Swing | −12.3 | |

#### 1940

1940 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Sir Earle Page | 27,773 | 53.7 | −9.5 |
| | Labor | Myles Kelly | 11,350 | 21.9 | −14.9 |
| | Independent | Joseph McElhone | 8,391 | 16.2 | +16.2 |
| | Independent | John Cain | 4,243 | 8.2 | +8.2 |
| Total formal votes | Total formal votes | Total formal votes | 51,757 | 98.3 | |
| Informal votes | Informal votes | Informal votes | 909 | 1.7 | |
| Turnout | Turnout | Turnout | 52,666 | 95.0 | |
| Two-party-preferred result ||||||
| | Country | Sir Earle Page | | 64.9 | +1.7 |
| | Labor | Myles Kelly | | 33.1 | −1.7 |
| | Country hold | Country hold | Swing | −13.0 | |

### Elections in the 1930s
#### 1937

1937 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Earle Page | 32,000 | 63.2 | −1.0 |
| | Labor | Abraham Brindley | 18,646 | 36.8 | +36.8 |
| Total formal votes | Total formal votes | Total formal votes | 50,646 | 98.3 | |
| Informal votes | Informal votes | Informal votes | 888 | 1.7 | |
| Turnout | Turnout | Turnout | 51,534 | 95.9 | |
| | Country hold | Country hold | Swing | −7.2 | |

#### 1934

1934 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Earle Page | 30,924 | 64.2 | −3.2 |
| | Labor (NSW) | William McCristal | 10,321 | 21.4 | +9.6 |
| | Social Credit | Hereward Kesteven | 6,958 | 14.4 | +14.4 |
| Total formal votes | Total formal votes | Total formal votes | 48,203 | 97.7 | |
| Informal votes | Informal votes | Informal votes | 1,130 | 2.3 | |
| Turnout | Turnout | Turnout | 49,333 | 95.5 | |
| Two-party-preferred result ||||||
| | Country | Earle Page | | 70.4 | −4.9 |
| | Labor (NSW) | William McCristal | | 29.6 | +29.6 |
| | Country hold | Country hold | Swing | −4.9 | |

#### 1931

1931 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Earle Page | 29,266 | 72.3 | −27.7 |
| | Labor | John Cusack | 6,417 | 15.9 | +15.9 |
| | Labor (NSW) | Tom Roach | 4,790 | 11.8 | +11.8 |
| Total formal votes | Total formal votes | Total formal votes | 40,473 | 98.8 | |
| Informal votes | Informal votes | Informal votes | 913 | 2.2 | |
| Turnout | Turnout | Turnout | 41,386 | 95.7 | |
| Two-party-preferred result ||||||
| | Country | Earle Page | | 75.3 | −24.7 |
| | Labor | John Cusack | | 24.7 | +24.7 |
| | Country hold | Country hold | Swing | −24.7 | |

### Elections in the 1920s
#### 1929

1929 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Earle Page | unopposed | | |
| | Country hold | Country hold | Swing | | |

#### 1928

1928 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Earle Page | 27,556 | 76.8 | +6.8 |
| | Labor | Tom Swiney | 8,336 | 23.2 | −6.8 |
| Total formal votes | Total formal votes | Total formal votes | 35,892 | 95.6 | |
| Informal votes | Informal votes | Informal votes | 1,659 | 4.4 | |
| Turnout | Turnout | Turnout | 37,551 | 95.7 | |
| | Country hold | Country hold | Swing | +6.8 | |

#### 1925

1925 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Earle Page | 24,571 | 70.0 | +2.7 |
| | Labor | Lockhart Easton | 10,510 | 30.0 | +30.0 |
| Total formal votes | Total formal votes | Total formal votes | 35,081 | 98.5 | |
| Informal votes | Informal votes | Informal votes | 544 | 1.5 | |
| Turnout | Turnout | Turnout | 35,625 | 92.8 | |
| | Country hold | Country hold | Swing | +2.7 | |

#### 1922

1922 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Country | Earle Page | 13,157 | 67.3 | +14.9 |
| | Nationalist | John Thomson | 6,398 | 32.7 | +11.4 |
| Total formal votes | Total formal votes | Total formal votes | 19,555 | 94.9 | |
| Informal votes | Informal votes | Informal votes | 1,060 | 5.1 | |
| Turnout | Turnout | Turnout | 20,615 | 52.9 | |
| | Country hold | Country hold | Swing | −4.3 | |

### Elections in the 1910s
#### 1919

1919 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Farmers and Settlers | Earle Page | 11,372 | 52.4 | +52.4 |
| | Labor | Ross Pryor | 5,712 | 26.3 | +26.3 |
| | Nationalist | John Thomson | 4,524 | 21.3 | −78.7 |
| Total formal votes | Total formal votes | Total formal votes | 21,708 | 94.8 | |
| Informal votes | Informal votes | Informal votes | 1,197 | 5.2 | |
| Turnout | Turnout | Turnout | 22,905 | 65.0 | |
| Two-party-preferred result ||||||
| | Farmers and Settlers | Earle Page | | 71.6 | +71.6 |
| | Labor | Ross Pryor | | 28.4 | +28.4 |
| | Farmers and Settlers gain from Nationalist | Farmers and Settlers gain from Nationalist | Swing | +71.6 | |

#### 1917

1917 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Nationalist | John Thomson | unopposed | | |
| | Nationalist hold | Nationalist hold | Swing | | |

#### 1914

1914 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | John Thomson | unopposed | | |
| | Liberal hold | Liberal hold | Swing | | |

#### 1913

1913 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | John Thomson | 17,152 | 72.2 | +4.1 |
| | Labor | Con Hogan | 6,620 | 27.8 | −0.9 |
| Total formal votes | Total formal votes | Total formal votes | 23,772 | 97.6 | |
| Informal votes | Informal votes | Informal votes | 576 | 2.4 | |
| Turnout | Turnout | Turnout | 24,348 | 66.1 | |
| | Liberal hold | Liberal hold | Swing | +2.5 | |

#### 1910

1910 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal | John Thomson | 8,686 | 67.9 | −16.6 |
| | Labour | Clem Johnson | 3,692 | 28.9 | +25.3 |
| | Independent Labour | John O'Brien | 418 | 3.3 | +3.3 |
| Total formal votes | Total formal votes | Total formal votes | 12,796 | 97.6 | |
| Informal votes | Informal votes | Informal votes | 313 | 2.4 | |
| Turnout | Turnout | Turnout | 13,109 | 40.6 | |
| | Liberal hold | Liberal hold | Swing | −30.5 | |

### Elections in the 1900s
#### 1906

1906 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Protectionist | John Thomson | 4,794 | 43.1 | +6.1 |
| | Anti-Socialist | Henry Lee | 4,602 | 41.4 | −21.6 |
| | Independent | Eugene Rudder | 1,316 | 11.8 | +11.8 |
| | Labour | John O'Brien | 399 | 3.6 | +3.6 |
| Total formal votes | Total formal votes | Total formal votes | 11,111 | 96.5 | |
| Informal votes | Informal votes | Informal votes | 404 | 3.5 | |
| Turnout | Turnout | Turnout | 11,515 | 41.7 | |
| | Protectionist gain from Anti-Socialist | Protectionist gain from Anti-Socialist | Swing | +13.9 | |

#### 1903

1903 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Free Trade | Henry Lee | 7,456 | 63.0 | +29.4 |
| | Protectionist | Francis Clarke | 4,384 | 37.0 | −1.3 |
| Total formal votes | Total formal votes | Total formal votes | 11,840 | 97.4 | |
| Informal votes | Informal votes | Informal votes | 328 | 2.6 | |
| Turnout | Turnout | Turnout | 12,168 | 47.6 | |
| | Free Trade gain from Protectionist | Free Trade gain from Protectionist | Swing | +15.4 | |

#### 1901

1901 Australian federal election: Cowper :
| Party | Party | Candidate | Votes | % | ±% |
| | Protectionist | Francis Clarke | 3,267 | 38.3 | +38.3 |
| | Free Trade | Robert Davidson | 2,866 | 33.6 | +33.6 |
| | Ind. Protectionist | Hugh McKinnon | 2,387 | 28.0 | +28.0 |
| Total formal votes | Total formal votes | Total formal votes | 8,520 | 98.7 | |
| Informal votes | Informal votes | Informal votes | 112 | 1.3 | |
| Turnout | Turnout | Turnout | 8,632 | 67.4 | |
| | Protectionist win | Protectionist win | (new seat) | (new seat) | (new seat) |