title: Electoral results for the district of Gosford
text: # Electoral results for the district of Gosford
  
  Gosford, an electoral district of the Legislative Assembly in the Australian state of New South Wales, has existed from 1950 to the present.
  
  ## Members for Gosford
  
  | Election | Member | Party |
  | - | - | - |
  | 1950 | Harold Jackson | Liberal |
  | 1953 | Harold Jackson | Liberal |
  | 1956 | Harold Jackson | Liberal |
  | 1959 | Harold Jackson | Liberal |
  | 1962 | Harold Jackson | Liberal |
  | 1965 | Ted Humphries | Liberal |
  | 1968 | Ted Humphries | Liberal |
  | 1971 | Keith O'Connell | Labor |
  | 1973 | Malcolm Brooks | Liberal |
  | 1976 | Brian McGowan | Labor |
  | 1978 | Brian McGowan | Labor |
  | 1981 | Brian McGowan | Labor |
  | 1984 | Brian McGowan | Labor |
  | 1988 | Chris Hartcher | Liberal |
  | 1991 | Chris Hartcher | Liberal |
  | 1995 | Chris Hartcher | Liberal |
  | 1999 | Chris Hartcher | Liberal |
  | 2003 | Chris Hartcher | Liberal |
  | 2007 | Marie Andrews | Labor |
  | 2011 | Chris Holstein | Liberal |
  | 2015 | Kathy Smith | Labor |
  | 2017 by | Liesl Tesch | Labor |
  | 2019 | Liesl Tesch | Labor |
  
  ## Election results
  
  ### Elections in the 2020s
  
  **2023**
  
  2023 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Labor | Liesl Tesch | 24,703 | 50.4 | +6.3 |
  | | Liberal | Dee Bocking | 13,881 | 28.3 | −7.8 |
  | | Greens | Hilary van Haren | 4,553 | 9.3 | +0.2 |
  | | Shooters, Fishers, Farmers | Larry Freeman | 2,071 | 4.2 | −0.5 |
  | | Independent | Lisa Bellamy | 1,668 | 3.4 | +3.4 |
  | | Animal Justice | Emily McCallum | 1,336 | 2.7 | −0.7 |
  | | Sustainable Australia | Ineka Soetens | 806 | 1.6 | −0.8 |
  | Total formal votes | Total formal votes | Total formal votes | 49,018 | 97.0 | +0.5 |
  | Informal votes | Informal votes | Informal votes | 1,524 | 3.0 | −0.5 |
  | Turnout | Turnout | Turnout | 50,542 | 86.9 | −2.0 |
  | Two-party-preferred result ||||||
  | | Labor | Liesl Tesch | 29,023 | 65.4 | +8.3 |
  | | Liberal | Dee Bocking | 15,364 | 34.6 | −8.3 |
  | | Labor hold | Labor hold | Swing | +8.3 | |
  
  ### Elections in the 2010s
  
  **2019**
  
  2019 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Labor | Liesl Tesch | 21,505 | 44.22 | +5.56 |
  | | Liberal | Susan Dengate | 17,529 | 36.04 | −6.51 |
  | | Greens | Hillary Morris | 4,405 | 9.06 | +0.05 |
  | | Shooters, Fishers, Farmers | Larry Freeman | 2,307 | 4.74 | +4.74 |
  | | Animal Justice | Patrick Murphy | 1,678 | 3.45 | +3.45 |
  | | Sustainable Australia | Judy Singer | 1,213 | 2.49 | +2.49 |
  | Total formal votes | Total formal votes | Total formal votes | 48,637 | 96.45 | −0.39 |
  | Informal votes | Informal votes | Informal votes | 1,788 | 3.55 | +0.39 |
  | Turnout | Turnout | Turnout | 50,425 | 89.35 | −1.26 |
  | Two-party-preferred result ||||||
  | | Labor | Liesl Tesch | 25,048 | 57.27 | +7.04 |
  | | Liberal | Susan Dengate | 18,691 | 42.73 | −7.04 |
  | | Labor hold | Labor hold | Swing | +7.04 | |
  
  **2017 by-election**
  
  2017 Gosford by-election Saturday 8 April :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Labor | Liesl Tesch | 22,931 | 49.5 | +10.9 |
  | | Liberal | Jilly Pilon | 14,208 | 30.7 | −11.9 |
  | | Greens | Abigail Boyd | 3,454 | 7.5 | −1.5 |
  | | Shooters, Fishers, Farmers | Larry Freeman | 2,378 | 5.1 | +5.1 |
  | | Animal Justice | Skyla Wagstaff | 1,841 | 4.0 | +4.0 |
  | | Christian Democrats | Andrew Church | 1,475 | 3.2 | +0.9 |
  | Total formal votes | Total formal votes | Total formal votes | 46,287 | 97.3 | +0.5 |
  | Informal votes | Informal votes | Informal votes | 1,285 | 2.7 | −0.5 |
  | Turnout | Turnout | Turnout | 47,572 | 85.0 | −5.6 |
  | Two-party-preferred result ||||||
  | | Labor | Liesl Tesch | 26,440 | 62.5 | +12.3 |
  | | Liberal | Jilly Pilon | 15,853 | 37.5 | −12.3 |
  | | Labor hold | Labor hold | Swing | +12.3 | |
  
  **2015**
  
  2015 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Chris Holstein | 20,535 | 42.5 | −7.6 |
  | | Labor | Kathy Smith | 18,654 | 38.7 | +11.0 |
  | | Greens | Kate Da Costa | 4,346 | 9.0 | −2.9 |
  | | Independent | Jake Cassar | 2,698 | 5.6 | +5.6 |
  | | Christian Democrats | Andrew Church | 1,091 | 2.3 | −1.2 |
  | | No Land Tax | Matthew Maroney | 938 | 1.9 | +1.9 |
  | Total formal votes | Total formal votes | Total formal votes | 48,262 | 96.8 | +0.9 |
  | Informal votes | Informal votes | Informal votes | 1,573 | 3.2 | −0.9 |
  | Turnout | Turnout | Turnout | 49,835 | 90.6 | −0.3 |
  | Two-party-preferred result ||||||
  | | Labor | Kathy Smith | 22,029 | 50.2 | +12.2 |
  | | Liberal | Chris Holstein | 21,826 | 49.8 | −12.2 |
  | | Labor gain from Liberal | Labor gain from Liberal | Swing | +12.2 | |
  
  **2011**
  
  2011 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Chris Holstein | 22,672 | 50.2 | +15.4 |
  | | Labor | Katie Smith | 12,472 | 27.6 | -15.1 |
  | | Greens | Peter Freewater | 5,391 | 11.9 | +5.0 |
  | | Independent | Jake Cassar | 2,227 | 4.9 | +4.9 |
  | | Christian Democrats | Ann-Marie Kitchener | 1,478 | 3.3 | +0.4 |
  | | Independent | Patrick Aiken | 935 | 2.1 | +2.1 |
  | Total formal votes | Total formal votes | Total formal votes | 45,175 | 96.6 | -0.7 |
  | Informal votes | Informal votes | Informal votes | 1,573 | 3.4 | +0.7 |
  | Turnout | Turnout | Turnout | 46,748 | 93.2 | +0.2 |
  | Two-party-preferred result ||||||
  | | Liberal | Chris Holstein | 24,425 | 61.9 | +16.7 |
  | | Labor | Katie Smith | 15,052 | 38.1 | -16.7 |
  | | Liberal gain from Labor | Liberal gain from Labor | Swing | +16.7 | |
  
  ### Elections in the 2000s
  
  **2007**
  
  2007 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Labor | Marie Andrews | 18,448 | 42.7 | -2.8 |
  | | Liberal | Chris Holstein | 15,057 | 34.8 | +3.3 |
  | | Independent | Debra Wales | 3,852 | 8.9 | +8.9 |
  | | Greens | Hillary Morris | 2,977 | 6.9 | +1.6 |
  | | Christian Democrats | George Grant | 1,241 | 2.9 | +2.9 |
  | | Against Further Immigration | Robert Moulds | 1,141 | 2.6 | +1.4 |
  | | Save Our Suburbs | Bryan Ellis | 524 | 1.2 | +0.9 |
  | Total formal votes | Total formal votes | Total formal votes | 43,240 | 97.4 | -0.4 |
  | Informal votes | Informal votes | Informal votes | 1,165 | 2.6 | +0.4 |
  | Turnout | Turnout | Turnout | 44,405 | 93.4 | |
  | Two-party-preferred result ||||||
  | | Labor | Marie Andrews | 20,535 | 54.9 | -3.7 |
  | | Liberal | Chris Holstein | 16,900 | 45.1 | +3.7 |
  | | Labor hold | Labor hold | Swing | -3.7 | |
  
  **2003**
  
  2003 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Chris Hartcher | 20,477 | 46.3 | +2.9 |
  | | Labor | Deborah O'Neill | 19,098 | 43.1 | +3.0 |
  | | Greens | Mark Dickinson | 3,146 | 7.1 | +4.3 |
  | | Save Our Suburbs | Ian Lamont | 716 | 1.6 | +1.6 |
  | | Democrats | Allison Newman | 602 | 1.4 | -2.0 |
  | | Unity | Yieu Mak | 234 | 0.5 | +0.5 |
  | Total formal votes | Total formal votes | Total formal votes | 44,273 | 98.1 | +0.0 |
  | Informal votes | Informal votes | Informal votes | 875 | 1.9 | -0.0 |
  | Turnout | Turnout | Turnout | 45,148 | 92.3 | |
  | Two-party-preferred result ||||||
  | | Liberal | Chris Hartcher | 21,015 | 50.3 | -2.0 |
  | | Labor | Deborah O'Neill | 20,743 | 49.7 | +2.0 |
  | | Liberal hold | Liberal hold | Swing | -2.0 | |
  
  ### Elections in the 1990s
  
  **1999**
  
  1999 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Chris Hartcher | 18,136 | 43.4 | -8.8 |
  | | Labor | Barry Cohen | 16,720 | 40.1 | -0.1 |
  | | One Nation | Errol Baker | 2,172 | 5.2 | +5.2 |
  | | Democrats | Andrew Penfold | 1,413 | 3.4 | -0.4 |
  | | Greens | Joanna Weckert | 1,159 | 2.8 | +2.8 |
  | | Christian Democrats | Gary Bailey | 1,104 | 2.6 | +2.6 |
  | | Earthsave | Anna Parker | 475 | 1.1 | +1.1 |
  | | Against Further Immigration | Isabel Gelling | 288 | 0.7 | +0.7 |
  | | Independent | Tom McKenna | 275 | 0.7 | +0.7 |
  | Total formal votes | Total formal votes | Total formal votes | 41,742 | 98.1 | +1.5 |
  | Informal votes | Informal votes | Informal votes | 824 | 1.9 | -1.5 |
  | Turnout | Turnout | Turnout | 42,566 | 92.6 | |
  | Two-party-preferred result ||||||
  | | Liberal | Chris Hartcher | 19,984 | 52.3 | -3.2 |
  | | Labor | Barry Cohen | 18,262 | 47.7 | +3.2 |
  | | Liberal hold | Liberal hold | Swing | -3.2 | |
  
  **1995**
  
  1995 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Chris Hartcher | 19,293 | 52.2 | +3.3 |
  | | Labor | Tony Sansom | 14,841 | 40.2 | +8.0 |
  | | Independent | James Adams | 1,423 | 3.9 | +3.9 |
  | | Democrats | Andrew Penfold | 1,399 | 3.8 | -0.9 |
  | Total formal votes | Total formal votes | Total formal votes | 36,956 | 96.5 | +2.4 |
  | Informal votes | Informal votes | Informal votes | 1,330 | 3.5 | -2.4 |
  | Turnout | Turnout | Turnout | 38,286 | 94.7 | |
  | Two-party-preferred result ||||||
  | | Liberal | Chris Hartcher | 20,117 | 55.5 | -1.3 |
  | | Labor | Tony Sansom | 16,153 | 44.5 | +1.3 |
  | | Liberal hold | Liberal hold | Swing | -1.3 | |
  
  **1991**
  
  1991 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Chris Hartcher | 15,328 | 48.9 | -0.9 |
  | | Labor | Stephen Goodwin | 10,078 | 32.1 | -4.5 |
  | | Independent | Robert Bell | 3,817 | 12.2 | +12.2 |
  | | Democrats | Andrew Penfold | 1,464 | 4.7 | -0.9 |
  | | Call to Australia | Eric Trezise | 677 | 2.2 | -5.9 |
  | Total formal votes | Total formal votes | Total formal votes | 31,364 | 94.1 | -3.1 |
  | Informal votes | Informal votes | Informal votes | 1,949 | 5.9 | +3.1 |
  | Turnout | Turnout | Turnout | 33,313 | 93.9 | |
  | Two-party-preferred result ||||||
  | | Liberal | Chris Hartcher | 16,940 | 56.7 | -0.7 |
  | | Labor | Stephen Goodwin | 12,915 | 43.3 | +0.7 |
  | | Liberal hold | Liberal hold | Swing | -0.7 | |
  
  ### Elections in the 1980s
  
  **1988**
  
  1988 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Chris Hartcher | 16,589 | 50.2 | +19.8 |
  | | Labor | Anthony Sansom | 11,922 | 36.1 | -9.5 |
  | | Call to Australia | John Anderson | 2,690 | 8.1 | +8.1 |
  | | Democrats | Gary Chestnut | 1,845 | 5.6 | 0.0 |
  | Total formal votes | Total formal votes | Total formal votes | 33,046 | 97.2 | -1.2 |
  | Informal votes | Informal votes | Informal votes | 938 | 2.8 | +1.2 |
  | Turnout | Turnout | Turnout | 33,984 | 95.1 | |
  | Two-party-preferred result ||||||
  | | Liberal | Chris Hartcher | 18,507 | 57.8 | +8.7 |
  | | Labor | Anthony Sansom | 13,485 | 42.2 | -8.7 |
  | | Liberal gain from Labor | Liberal gain from Labor | Swing | +8.7 | |
  
  **1984**
  
  1984 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Labor | Brian McGowan | 17,438 | 46.5 | -5.0 |
  | | Liberal | Chris Hartcher | 11,323 | 30.2 | -10.3 |
  | | National | Donald Leggett | 6,548 | 17.5 | +17.5 |
  | | Democrats | Gary Chestnut | 2,168 | 5.8 | +1.3 |
  | Total formal votes | Total formal votes | Total formal votes | 37,477 | 98.4 | +0.7 |
  | Informal votes | Informal votes | Informal votes | 615 | 1.6 | -0.7 |
  | Turnout | Turnout | Turnout | 38,092 | 93.6 | +1.4 |
  | Two-party-preferred result ||||||
  | | Labor | Brian McGowan | 19,147 | 51.9 | -4.9 |
  | | Liberal | Chris Hartcher | 17,734 | 48.1 | +4.9 |
  | | Labor hold | Labor hold | Swing | -4.9 | |
  
  **1981**
  
  1981 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Labor | Brian McGowan | 17,066 | 51.5 | -5.9 |
  | | Liberal | Andrew Fennell | 13,419 | 40.5 | +3.2 |
  | | Democrats | Robert Bell | 1,474 | 4.5 | -0.4 |
  | | Independent | Barry Phillips | 639 | 1.9 | +1.9 |
  | | Independent | Paul Baker | 522 | 1.6 | +1.6 |
  | Total formal votes | Total formal votes | Total formal votes | 33,120 | 97.7 | |
  | Informal votes | Informal votes | Informal votes | 787 | 2.3 | |
  | Turnout | Turnout | Turnout | 33,907 | 92.2 | |
  | Two-party-preferred result ||||||
  | | Labor | Brian McGowan | 18,066 | 56.8 | -2.8 |
  | | Liberal | Andrew Fennell | 13,719 | 43.2 | +2.8 |
  | | Labor hold | Labor hold | Swing | -2.8 | |
  
  ### Elections in the 1970s
  
  **1978**
  
  1978 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Labor | Brian McGowan | 19,282 | 57.4 | +9.1 |
  | | Liberal | Andrew Fennell | 12,539 | 37.3 | -11.6 |
  | | Democrats | John Cleverly | 1,636 | 4.9 | +4.9 |
  | | Independent | Stanley Williams | 128 | 0.4 | +0.4 |
  | Total formal votes | Total formal votes | Total formal votes | 33,585 | 98.9 | 0.0 |
  | Informal votes | Informal votes | Informal votes | 384 | 1.1 | 0.0 |
  | Turnout | Turnout | Turnout | 33,969 | 94.2 | -0.5 |
  | Two-party-preferred result ||||||
  | | Labor | Brian McGowan | 20,001 | 59.6 | +9.5 |
  | | Liberal | Andrew Fennell | 13,584 | 40.4 | -9.5 |
  | | Labor hold | Labor hold | Swing | +9.5 | |
  
  **1976**
  
  1976 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Malcolm Brooks | 14,534 | 48.9 | -3.8 |
  | | Labor | Brian McGowan | 14,347 | 48.3 | +4.7 |
  | | Australia | Barry Phillips | 855 | 2.9 | +2.9 |
  | Total formal votes | Total formal votes | Total formal votes | 29,736 | 98.9 | +0.6 |
  | Informal votes | Informal votes | Informal votes | 329 | 1.1 | -0.6 |
  | Turnout | Turnout | Turnout | 30,065 | 94.7 | +1.2 |
  | Two-party-preferred result ||||||
  | | Labor | Brian McGowan | 14,905 | 50.1 | +5.8 |
  | | Liberal | Malcolm Brooks | 14,831 | 49.9 | -5.8 |
  | | Labor gain from Liberal | Labor gain from Liberal | Swing | +5.8 | |
  
  **1973**
  
  1973 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Malcolm Brooks | 12,307 | 52.7 | +6.6 |
  | | Labor | Brian McGowan | 10,182 | 43.6 | -4.3 |
  | | Democratic Labor | William Dunbar | 873 | 3.7 | +3.7 |
  | Total formal votes | Total formal votes | Total formal votes | 23,362 | 98.3 | |
  | Informal votes | Informal votes | Informal votes | 396 | 1.7 | |
  | Turnout | Turnout | Turnout | 23,758 | 93.5 | |
  | Two-party-preferred result ||||||
  | | Liberal | Malcolm Brooks | 13,005 | 55.7 | +4.6 |
  | | Labor | Brian McGowan | 10,357 | 44.3 | -4.6 |
  | | Liberal notional hold | Liberal notional hold | Swing | +4.6 | |
  
  **1971**
  
  1971 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Labor | Keith O'Connell | 15,105 | 48.9 | +1.0 |
  | | Liberal | Ted Humphries | 13,926 | 45.1 | -3.6 |
  | | Independent | Wallace Cook | 944 | 3.1 | +3.1 |
  | | Australia | Barry Phillips | 903 | 2.9 | +2.9 |
  | Total formal votes | Total formal votes | Total formal votes | 30,878 | 98.9 | |
  | Informal votes | Informal votes | Informal votes | 352 | 1.1 | |
  | Turnout | Turnout | Turnout | 31,230 | 94.8 | |
  | Two-party-preferred result ||||||
  | | Labor | Keith O'Connell | 16,233 | 52.6 | +4.0 |
  | | Liberal | Ted Humphries | 14,645 | 47.4 | -4.0 |
  | | Labor gain from Liberal | Labor gain from Liberal | Swing | +4.0 | |
  
  ### Elections in the 1960s
  
  **1968**
  
  1968 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Ted Humphries | 11,623 | 48.7 | +1.5 |
  | | Labor | Peter Westerway | 11,438 | 47.9 | +2.8 |
  | | Democratic Labor | Thomas Crass | 813 | 3.4 | -4.3 |
  | Total formal votes | Total formal votes | Total formal votes | 23,874 | 98.2 | |
  | Informal votes | Informal votes | Informal votes | 446 | 1.8 | |
  | Turnout | Turnout | Turnout | 24,320 | 96.1 | |
  | Two-party-preferred result ||||||
  | | Liberal | Ted Humphries | 12,271 | 51.4 | +1.0 |
  | | Labor | Peter Westerway | 11,603 | 48.6 | -1.0 |
  | | Liberal hold | Liberal hold | Swing | +1.0 | |
  
  **1965**
  
  1965 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Ted Humphries | 11,533 | 48.2 | −2.5 |
  | | Labor | Kevin Dwyer | 10,543 | 44.1 | −5.2 |
  | | Democratic Labor | Michael Dwyer | 1,839 | 7.7 | +7.7 |
  | Total formal votes | Total formal votes | Total formal votes | 23,915 | 98.5 | −0.3 |
  | Informal votes | Informal votes | Informal votes | 358 | 1.5 | +0.3 |
  | Turnout | Turnout | Turnout | 24,273 | 95.0 | −0.1 |
  | Two-party-preferred result ||||||
  | | Liberal | Ted Humphries | 12,336 | 51.6 | +0.9 |
  | | Labor | Kevin Dwyer | 11,579 | 48.4 | −0.9 |
  | | Liberal hold | Liberal hold | Swing | +0.9 | |
  
  **1962**
  
  1962 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Harold Jackson | 10,473 | 50.7 | −6.7 |
  | | Labor | Kevin Dwyer | 10,170 | 49.3 | +6.7 |
  | Total formal votes | Total formal votes | Total formal votes | 20,643 | 98.8 | |
  | Informal votes | Informal votes | Informal votes | 241 | 1.2 | |
  | Turnout | Turnout | Turnout | 20,884 | 95.1 | |
  | | Liberal hold | Liberal hold | Swing | −6.7 | |
  
  ### Elections in the 1950s
  
  **1959**
  
  1959 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % |
  | - | - | - | - | - |
  | | Liberal | Harold Jackson | 11,999 | 60.8 |
  | | Labor | Reginald Smith | 7,746 | 39.2 |
  | Total formal votes | Total formal votes | Total formal votes | 19,745 | 98.7 |
  | Informal votes | Informal votes | Informal votes | 268 | 1.3 |
  | Turnout | Turnout | Turnout | 20,013 | 93.9 |
  | | Liberal hold | Liberal hold | Swing | |
  
  **1956**
  
  1956 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % | ±% |
  | - | - | - | - | - | - |
  | | Liberal | Harold Jackson | 11,096 | 56.8 | +2.8 |
  | | Labor | Rupert Wallace | 7,164 | 36.7 | −9.3 |
  | | Communist | Alan Brackenreg | 626 | 3.2 | +3.2 |
  | | Independent | Roy Jackson | 463 | 2.4 | +2.4 |
  | | Independent | Leslie Moffat | 174 | 0.9 | +0.9 |
  | Total formal votes | Total formal votes | Total formal votes | 19,523 | 98.2 | +0.2 |
  | Informal votes | Informal votes | Informal votes | 356 | 1.8 | −0.2 |
  | Turnout | Turnout | Turnout | 19,879 | 93.4 | +0.2 |
  | Two-party-preferred result ||||||
  | | Liberal | Harold Jackson | 11,478 | 58.7 | +4.7 |
  | | Labor | Rupert Wallace | 8,045 | 41.3 | −4.7 |
  | | Liberal hold | Liberal hold | Swing | +4.7 | |
  
  **1953**
  
  1953 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % |
  | - | - | - | - | - |
  | | Liberal | Harold Jackson | 9,576 | 54.0 |
  | | Labor | Rupert Wallace | 8,160 | 46.0 |
  | Total formal votes | Total formal votes | Total formal votes | 17,736 | 98.0 |
  | Informal votes | Informal votes | Informal votes | 359 | 2.0 |
  | Turnout | Turnout | Turnout | 18,095 | 93.2 |
  | | Liberal hold | Liberal hold | Swing | |
  
  **1950**
  
  1950 New South Wales state election: Gosford :
  
  | Party | Party | Candidate | Votes | % |
  | - | - | - | - | - |
  | | Liberal | Harold Jackson | 5,800 | 38.6 |
  | | Labor | John Egan | 4,631 | 30.9 |
  | | Independent | Jack Parks | 1,972 | 13.1 |
  | | Independent | George Downes | 1,133 | 7.6 |
  | | Independent | Walter Lloyd | 866 | 5.8 |
  | | Country | William Wright | 606 | 4.0 |
  | Total formal votes | Total formal votes | Total formal votes | 15,008 | 97.6 |
  | Informal votes | Informal votes | Informal votes | 374 | 2.4 |
  | Turnout | Turnout | Turnout | 15,382 | 92.3 |
  | Two-party-preferred result ||||||
  | | Liberal | Harold Jackson | 9,254 | 61.7 |
  | | Labor | John Egan | 5,754 | 38.3 |
  | | Liberal notional hold | Liberal notional hold | | |
  