# Dufferin—Caledon (provincial electoral district)

Dufferin—Caledon is a provincial electoral district in southwestern Ontario, Canada. It was created for the 2007 provincial election. The entire riding was carved from Dufferin—Peel—Wellington—Grey, and includes all of Dufferin County plus the town of Caledon in Peel Region.
The riding also existed from 1987 until 1999 with the same borders, but was known as Dufferin—Peel.

## Members of Provincial Parliament

| Assembly | Years | Member | Party |
| Dufferin—Peel Riding created |||||
| 34th | 1987–1990 | Mavis Wilson | Liberal |
| 35th | 1990–1995 | David Tilson | Progressive Conservative |
| 36th | 1995–1999 | David Tilson | Progressive Conservative |
| Riding dissolved |||||
| Dufferin—Caledon Riding re-created from Dufferin—Peel—Wellington—Grey |||||
| 39th | 2007–2011 | Sylvia Jones | Progressive Conservative |
| 40th | 2011–2014 | Sylvia Jones | Progressive Conservative |
| 41st | 2014–2018 | Sylvia Jones | Progressive Conservative |
| 42nd | 2018–2022 | Sylvia Jones | Progressive Conservative |
| 43rd | 2022–2025 | Sylvia Jones | Progressive Conservative |
| 44th | 2025–present | Sylvia Jones | Progressive Conservative |

## Election results

2025 Ontario general election :
| Party | Candidate | Votes | % | ±% |
| | Progressive Conservative | Sylvia Jones | 26,072 | 52.49 | +2.82 |
| | Liberal | Michael Dehn | 12,606 | 25.38 | +6.57 |
| | Green | Sandy Brown | 6,157 | 12.39 | –1.74 |
| | New Democratic | George Nakitsas | 3,184 | 6.41 | –4.36 |
| | New Blue | Kris Eggleton | 1,074 | 2.16 | –2.78 |
| | Independent | Jeffrey Halsall | 384 | 0.77 | N/A |
| | Moderate | Alexey Cherkashov | 197 | 0.40 | +0.17 |
| Total valid votes/expense limit | Total valid votes/expense limit | Total valid votes/expense limit | 49,674 | 99.43 | –0.04 |
| Total rejected, unmarked, and declined ballots | Total rejected, unmarked, and declined ballots | Total rejected, unmarked, and declined ballots | 284 | 0.57 | +0.04 |
| Turnout | Turnout | Turnout | 49,958 | 42.95 | +0.88 |
| Eligible voters | Eligible voters | Eligible voters | 116,309 |
| | Progressive Conservative hold | Progressive Conservative hold | Swing | Swing | –1.88 |
| Source: Elections Ontario |||||||
vte2022 Ontario general election :
| Party | Candidate | Votes | % | ±% |
| | Progressive Conservative | Sylvia Jones | 22,911 | 49.67 | −3.42 |
| | Liberal | Bob Gordanier | 8,678 | 18.81 | +6.35 |
| | Green | Laura Campbell | 6,518 | 14.13 | +1.60 |
| | New Democratic | Tess Prendergast | 4,967 | 10.77 | −9.57 |
| | New Blue | Andrea Banyai | 2,280 | 4.94 | |
| | Ontario Party | Lily Nguyen | 589 | 1.28 | |
| | Moderate | Erickumar Emmanuel | 105 | 0.23 | |
| | Public Benefit | Kay Sayer | 79 | 0.17 | |
| Total valid votes | Total valid votes | Total valid votes | 46,127 | 100.0 |
| Total rejected, unmarked, and declined ballots | Total rejected, unmarked, and declined ballots | Total rejected, unmarked, and declined ballots | 246 |
| Turnout | Turnout | Turnout | 46,373 | 42.07 |
| Eligible voters | Eligible voters | Eligible voters | 109,942 |
| | Progressive Conservative hold | Progressive Conservative hold | Swing | Swing | −4.88 |
| Source(s) "Summary of Valid Votes Cast for Each Candidate" (PDF). Elections Ontario. 2022. Archived from the original on 2023-05-18."Statistical Summary by Electoral District" (PDF). Elections Ontario. 2022. Archived from the original on 2023-05-21. |||||||
2018 Ontario general election :
| Party | Candidate | Votes | % | ±% |
| | Progressive Conservative | Sylvia Jones | 29,702 | 53.08 | +13.22 |
| | New Democratic | Andrea Mullarkey | 11,381 | 20.34 | +8.68 |
| | Green | Laura Campbell | 7,011 | 12.53 | -4.10 |
| | Liberal | Bob Gordanier | 6,972 | 12.46 | -18.20 |
| | Libertarian | Jeff Harris | 430 | 0.78 | -0.41 |
| | Consensus Ontario | Stephen McKendrick | 301 | 0.54 | +0.54 |
| | Trillium | Andrew Nowell | 157 | 0.28 | +0.28 |
| Total valid votes | Total valid votes | Total valid votes | 55,956 | 100.00 |
| Turnout | Turnout | Turnout | 55,956 | 58.55 |
| Eligible voters | Eligible voters | Eligible voters | 95,569 |
| | Progressive Conservative hold | Progressive Conservative hold | Swing | Swing | +13.22 |
| Source: Elections Ontario |||||||
2014 Ontario general election :
| Party | Candidate | Votes | % | ±% |
| | Progressive Conservative | Sylvia Jones | 18,017 | 39.86 | -7.09 |
| | Liberal | Bobbie Daid | 13,861 | 30.66 | +3.91 |
| | Green | Karren Wallace | 7,518 | 16.63 | +2.05 |
| | New Democratic | Rehya Yazbek | 5,269 | 11.66 | +0.60 |
| | Libertarian | Daniel Kowalewski | 538 | 1.19 | +0.53 |
| Total valid votes | Total valid votes | Total valid votes | 45,203 | 100.00 |
| | Progressive Conservative hold | Progressive Conservative hold | Swing | Swing | -5.50 |
| Source: Elections Ontario |||||||
2011 Ontario general election :
| Party | Candidate | Votes | % | ±% |
| | Progressive Conservative | Sylvia Jones | 17,833 | 46.95 | +5.12 |
| | Liberal | Lori Holloway | 10,162 | 26.75 | -5.27 |
| | Green | Rob Strang | 5,540 | 14.58 | -1.71 |
| | New Democratic | Karen Gventer | 4,200 | 11.06 | +1.20 |
| | Libertarian | Daniel Kowalewski | 250 | 0.66 | |
| Total valid votes | Total valid votes | Total valid votes | 37,985 | 100.00 |
| Total rejected, unmarked and declined ballots | Total rejected, unmarked and declined ballots | Total rejected, unmarked and declined ballots | 166 | 0.44 |
| Turnout | Turnout | Turnout | 38,151 | 47.74 |
| Eligible voters | Eligible voters | Eligible voters | 79,918 |
| | Progressive Conservative hold | Progressive Conservative hold | Swing | Swing | +5.20 |
| Source: Elections Ontario |||||||
2007 Ontario general election :
| Party | Candidate | Votes | % | ±% |
| | Progressive Conservative | Sylvia Jones | 16,508 | 41.83 | −22.93 |
| | Liberal | Betsy Hall | 12,636 | 32.02 | +3.19 |
| | Green | Rob Strang | 6,429 | 16.29 | +13.84 |
| | New Democratic | Lynda McDougall | 3,891 | 9.86 | +5.89 |
| Total valid votes | Total valid votes | Total valid votes | 39,464 | 100.0 |

## Dufferin—Peel—Wellington—Grey

2005 by-election :
| Party | Candidate | Votes | % | ±% |
| Progressive Conservative | John Tory | 15,610 | 56.3 | - |
| Liberal | Bob Duncanson | 4,625 | 16.7 | - |
| New Democratic | Lynda McDougall | 3,881 | 14.0 |
| Green | Frank de Jong | 2,767 | 10.0 |
| Family Coalition | Paul Micelli | 479 | 1.7 | - |
| Independent | William Cook | 163 | 0.6 | - |
| Libertarian | Philip Bender | 135 | 0.5 | - |
| Independent | John Turmel | 85 | 0.3 | - |
2003 Ontario general election :
| Party | Candidate | Votes | % | ±% |
| Progressive Conservative | Ernie Eves | 29,222 | 56.64 | -8.12 |
| Liberal | Dan Yake | 14,859 | 28.8 | -0.03 |
| Green | Frank De Jong | 3,161 | 6.13 | 3.68 |
| New Democratic | Mitchel Healey | 3,148 | 6.1 | +2.13 |
| Family Coalition | Dave Davies | 1,202 | 2.33 |
2002 by-election :
| Party | Candidate | Votes | % |
| Progressive Conservative | Ernie Eves | 15,288 | 46.59 |
| Liberal | Josh Matlow | 11,728 | 35.74 |
| New Democratic | Doug Wilcox | 2,633 | 8.02 |
| Green | Richard Procter | 2,017 | 6.15 |
| Family Coalition | Dave Davies | 1,025 | 3.12 |
| Independent | John Turmel | 120 | 0.37 |
1999 Ontario general election :
| Party | Candidate | Votes | % |
| | Progressive Conservative | David Tilson | 30,532 | 64.76 |
| | Liberal | Steve White | 13,591 | 28.83 |
| | New Democratic | Noel Duignan | 1,871 | 3.97 |
| | Green | Richard Procter | 1,156 | 2.45 |
| Total valid votes/ | Total valid votes/ | Total valid votes/ | 47,150 | 100.00 |
| Total rejected ballots | Total rejected ballots | Total rejected ballots | 342 | – |
| Turnout | Turnout | Turnout | 49,492 | 58.6 |
1999 Ontario general election :
| Party | Candidate | Votes | % | ±% |
| | Progressive Conservative | David Tilson | 30,532 | 64.76 | -1.24 |
| | Liberal | Steve White | 13,591 | 28.83 | +4.69 |
| | New Democratic | Noel Duignan | 1,871 | 3.97 | -5.88 |
| | Green | Richard Procter | 1,156 | 2.45 | |
| Total valid votes/ | Total valid votes/ | Total valid votes/ | 47,150 | 100.00 |
| Total rejected ballots | Total rejected ballots | Total rejected ballots | 342 | – |
| Turnout | Turnout | Turnout | 49,492 | 58.6 |
| Eligible voters | Eligible voters | Eligible voters | 81,020 |
| | Progressive Conservative hold | Progressive Conservative hold | Swing | Swing | – |

## Dufferin—Peel

1995 Ontario general election :
| Party | Candidate | Votes | % | ±% |
| | Progressive Conservative | David Tilson | 23,239 | 66.00 | +31.30 |
| | Liberal | Mavis Wilson | 8,501 | 24.14 | -8.66 |
| | New Democratic | Sandra Crane | 3,470 | 9.85 | -17.55 |
| Total valid votes/ | Total valid votes/ | Total valid votes/ | 35,210 | 100.00 |
| Total rejected ballots | Total rejected ballots | Total rejected ballots | 204 | – |
| Turnout | Turnout | Turnout | 35,414 | 65.2 |
| Eligible voters | Eligible voters | Eligible voters | 54,176 |
| | Progressive Conservative hold | Progressive Conservative hold | Swing | Swing | +19.98 |
1990 Ontario general election :
| Party | Candidate | Votes | % | ±% |
| | Progressive Conservative | David Tilson | 10,899 | 34.70 | +3.41 |
| | Liberal | Mavis Wilson | 10,327 | 32.80 | -20.26 |
| | New Democratic | Sandra Crane | 8,627 | 27.40 | +11.76 |
| | Libertarian | Bob Shapton | 1,594 | 5.10 | – |
| Total valid votes/ | Total valid votes/ | Total valid votes/ | 35,210 | 100.00 |
| Total rejected ballots | Total rejected ballots | Total rejected ballots | 204 | – |
| Turnout | Turnout | Turnout | 35,414 |
| | Progressive Conservative gain from Liberal | Progressive Conservative gain from Liberal | Swing | Swing | +11.84 |

## 2007 electoral reform referendum

2007 Ontario electoral reform referendum :
| Side | Votes | % |
| First Past the Post | 24,736 | 64.1 |
| Mixed member proportional | 13,867 | 35.9 |
| Total valid votes | 38,603 | 100.0 |

## Sources

* ↑ "Vote Totals From Official Tabulation" (PDF). Elections Ontario. 3 March 2025. Retrieved 4 March 2025.
* ↑ "Summary of Valid Votes Cast for each Candidate" (PDF). Elections Ontario. Retrieved 16 January 2019.
* ↑ Elections Ontario (2014). "Official result from the records, Dufferin-Caledon" (PDF). Archived from the original (PDF) on 2 June 2015. Retrieved 17 June 2015.
* ↑ Elections Ontario (2011). "Official return from the records / Rapport des registres officiels - Dufferin—Caledon" (PDF). Retrieved 2 June 2014.
* Elections Ontario Past Election Results
* Map of riding for 2018 election
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