# Detailed results of the 2007 Ontario electoral reform referendum

The following tables are the detailed results of the Ontario electoral reform referendum that was held on October 10, 2007, in an attempt to establish a mixed-member proportional representation (MMP) system for elections to the Legislative Assembly of Ontario. However, the vote went heavily in favor of the existing plurality voting or "first-past-the-post" (FPTP) system.

## Results for Ontario regions excluding Toronto

| Riding | Region | First-past-the-post | Mixed-member proportional |
| Ajax-Pickering | Southern Durham and York | 25,023 (63.0%) | 14,685 (37.0%) |
| Algoma-Manitoulin | Northern Ontario | 18,099 (69.9%) | 7,806 (30.1%) |
| Ancaster-Dundas-Flamborough-Westdale | Hamilton, Burlington and Niagara | 30,756 (63.0%) | 18,047 (37.0%) |
| Barrie | Central Ontario | 27,951 (61.8%) | 17,310 (38.2%) |
| Bramalea-Gore-Malton | Brampton, Mississauga and Oakville | 23,241 (59.5%) | 15,793 (40.5%) |
| Brampton-Springdale | Brampton, Mississauga and Oakville | 20,528 (60.8%) | 13,210 (39.2%) |
| Brampton West | Brampton, Mississauga and Oakville | 26,221 (60.7%) | 16,962 (39.3%) |
| Brant | Midwestern Ontario | 30,256 (65.1%) | 16,200 (34.9%) |
| Bruce-Grey-Owen Sound | Central Ontario | 27,637 (62.9%) | 16,279 (37.1%) |
| Burlington | Hamilton, Burlington and Niagara | 33,788 (65.8%) | 17,524 (34.2%) |
| Cambridge | Midwestern Ontario | 25,805 (61.5%) | 16,187 (38.5%) |
| Carleton-Mississippi Mills | Ottawa | 36,458 (70.2%) | 15,454 (29.8%) |
| Chatham-Kent-Essex | Southwestern Ontario | 24,219 (69.2%) | 10,802 (30.8%) |
| Dufferin-Caledon | Central Ontario | 24,847 (64.1%) | 13,910 (35.9%) |
| Durham | Central Ontario | 30,292 (67.3%) | 14,751 (32.7%) |
| Elgin-Middlesex-London | Southwestern Ontario | 27,035 (67.9%) | 12,771 (32.1%) |
| Essex | Southwestern Ontario | 27,228 (66.9%) | 13,452 (33.1%) |
| Glengarry-Prescott-Russell | Eastern Ontario | 28,263 (73.6%) | 10,121 (26.4%) |
| Guelph | Midwestern Ontario | 27,081 (55.7%) | 21,503 (44.3%) |
| Haldimand-Norfolk | Midwestern Ontario | 28,684 (68.8%) | 13,034 (31.2%) |
| Haliburton-Kawartha Lakes-Brock | Central Ontario | 33,292 (70.1%) | 14,234 (29.9%) |
| Halton | Hamilton, Burlington and Niagara | 33,833 (63.3%) | 19,601 (36.7%) |
| Hamilton Centre | Hamilton, Burlington and Niagara | 20,942 (56.5%) | 16,108 (43.5%) |
| Hamilton East—Stoney Creek | Hamilton, Burlington and Niagara | 26,386 (63.8%) | 14,998 (36.2%) |
| Hamilton Mountain | Hamilton, Burlington and Niagara | 29,375 (65.0%) | 15,818 (35.0%) |
| Huron—Bruce | Midwestern Ontario | 30,795 (71.4%) | 12,342 (28.6%) |
| Kenora-Rainy River | Northern Ontario | 15,669 (69.9%) | 6,734 (30.1%) |
| Kingston and the Islands | Eastern Ontario | 26,427 (54.7%) | 21,922 (45.3%) |
| Kitchener Centre | Midwestern Ontario | 22,269 (59.9%) | 14,908 (40.1%) |
| Kitchener—Conestoga | Midwestern Ontario | 24,264 (63.6%) | 13,859 (36.4%) |
| Kitchener—Waterloo | Midwestern Ontario | 28,580 (57.0%) | 21,543 (43.0%) |
| Lambton-Kent-Middlesex | Southwestern Ontario | 28,085 (68.8%) | 12,739 (31.2%) |
| Lanark—Frontenac—Lennox and Addington | Eastern Ontario | 29,366 (66.7%) | 14,657 (33.3%) |
| Leeds—Grenville | Eastern Ontario | 28,156 (71.2%) | 11,392 (28.8%) |
| London—Fanshawe | Southwestern Ontario | 21,709 (63.3%) | 12,563 (36.7%) |
| London North Centre | Southwestern Ontario | 26,619 (59.5%) | 18,103 (40.5%) |
| London West | Southwestern Ontario | 30,789 (64.0%) | 17,338 (36.0%) |
| Markham—Unionville | Southern Durham and York | 20,146 (58.8%) | 14,143 (41.2%) |
| Mississauga—Brampton South | Brampton, Mississauga and Oakville | 21,219 (60.0%) | 14,124 (40.0%) |
| Mississauga East—Cooksville | Brampton, Mississauga and Oakville | 22,180 (61.6%) | 13,822 (38.4%) |
| Mississauga—Erindale | Brampton, Mississauga and Oakville | 27,165 (62.3%) | 16,473 (37.7%) |
| Mississauga South | Brampton, Mississauga and Oakville | 26,127 (65.1%) | 14,036 (34.9%) |
| Mississauga—Streetsville | Brampton, Mississauga and Oakville | 23,183 (61.7%) | 14,417 (38.3%) |
| Nepean-Carleton | Ottawa | 36,775 (69.2%) | 16,393 (30.8%) |
| Newmarket—Aurora | Central Ontario | 29,517 (66.0%) | 15,232 (34.0%) |
| Niagara Falls | Hamilton, Burlington and Niagara | 29,240 (64.7%) | 15,966 (35.3%) |
| [[Niagara West—Glanbrook (provincial electoral district)|Niagara West-Glanbrook | Hamilton, Burlington and Niagara]] | 30,670 (65.7%) | 16,012 (34.3%) |
| Nickel Belt | Northern Ontario | 21,731 (69.0%) | 9,771 (31.0%) |
| Nipissing | Northern Ontario | 23,116 (73.4%) | 8,383 (26.6%) |
| Northumberland—Quinte West | Central Ontario | 32,332 (67.2%) | 15,770 (32.8%) |
| Oak Ridges—Markham | Southern Durham and York | 35,866 (62.0%) | 22,006 (38.0%) |
| Oakville | Brampton, Mississauga and Oakville | 31,282 (67.0%) | 15,410 (33.0%) |
| Oshawa | Southern Durham and York | 25,656 (64.2%) | 14,306 (35.8%) |
| Ottawa Centre | Ottawa | 26,603 (51.9%) | 24,642 (48.1%) |
| Ottawa-Orleans | Ottawa | 33,537 (70.1%) | 14,296 (29.9%) |
| Ottawa South | Ottawa | 30,718 (65.8%) | 15,941 (34.2%) |
| Ottawa-Vanier | Ottawa | 24,545 (61.3%) | 15,501 (38.7%) |
| Ottawa-West Nepean | Ottawa | 30,459 (66.6%) | 15,244 (33.4%) |
| Oxford | Midwestern Ontario | 25,093 (66.0%) | 12,909 (34.0%) |
| Parry Sound-Muskoka | Northern Ontario | 24,421 (67.9%) | 11,527 (32.1%) |
| Perth Wellington | Midwestern Ontario | 25,479 (67.6%) | 12,237 (32.4%) |
| Peterborough | Central Ontario | 32,364 (64.4%) | 17,863 (35.6%) |
| Pickering—Scarborough East | Southern Durham and York | 25,361 (63.7%) | 14,469 (36.3%) |
| Prince Edward—Hastings | Eastern Ontario | 29,067 (66.1%) | 14,885 (33.9%) |
| Renfrew—Nipissing—Pembroke | Eastern Ontario | 28,748 (74.3%) | 9,926 (25.7%) |
| Richmond Hill | Southern Durham and York | 23,240 (58.9%) | 16,240 (41.1%) |
| St. Catharines | Hamilton, Burlington and Niagara | 26,611 (61.7%) | 16,516 (38.3%) |
| Sarnia-Lambton (270/272) | Southwestern Ontario | 27,498 (66.6%) | 13,786 (33.4%) |
| Sault Ste. Marie | Northern Ontario | 22,830 (73.8%) | 8,110 (26.2%) |
| Simcoe—Grey | Central Ontario | 31,413 (66.8%) | 15,580 (33.2%) |
| Simcoe North | Central Ontario | 28,222 (62.7%) | 16,791 (37.3%) |
| Stormont-Dundas-South Glengarry | Eastern Ontario | 27,203 (73.5%) | 9,786 (26.5%) |
| Sudbury | Northern Ontario | 21,613 (68.1%) | 10,127 (31.9%) |
| Thornhill | Southern Durham and York | 29,021 (62.1%) | 17,683 (37.9%) |
| Thunder Bay-Atikokan | Northern Ontario | 19,211 (68.4%) | 8,864 (31.6%) |
| Thunder Bay-Superior North | Northern Ontario | 18,640 (67.7%) | 8,897 (32.3%) |
| Timiskaming-Cochrane | Northern Ontario | 19,759 (76.4%) | 6,102 (23.6%) |
| Timmins-James Bay | Northern Ontario | 18,784 (77.5%) | 5,439 (22.5%) |
| Vaughan | Southern Durham and York | 27,336 (61.7%) | 16,979 (38.3%) |
| Welland | Hamilton, Burlington and Niagara | 26,893 (60.1%) | 17,830 (39.9%) |
| Wellington-Halton Hills | Midwestern Ontario | 28,472 (66.2%) | 14,543 (33.8%) |
| Whitby—Oshawa | Southern Durham and York | 33,509 (66.2%) | 17,121 (33.8%) |
| Willowdale | Toronto North Region | 25,555 (59.6%) | 17,304 (40.4%) |
| Windsor—Tecumseh | Southwestern Ontario | 22,786 (64.4%) | 12,586 (35.6%) |
| Windsor West | Southwestern Ontario | 20,433 (63.1%) | 11,963 (36.9%) |
| York—Simcoe | Central Ontario | 26,223 (64.6%) | 14,374 (35.4%) |
| Totals | | 2,297,820 (64.8%) | 1,246,985 (35.2%) |

## Results for Toronto regions

| Riding | Region | First-past-the-post | Mixed-member proportional |
| Beaches-East York | Toronto South Region | 19,212 (50.0%) | 19,242 (50.0%) |
| Davenport | Toronto South Region | 12,241 (43.5%) | 15,923 (56.5%) |
| Don Valley East | Toronto North Region | 20,758 (61.0%) | 13,265 (39.0%) |
| Don Valley West | Toronto North Region | 28,084 (63.0%) | 16,484 (37.0%) |
| Eglinton-Lawrence | Toronto North Region | 23,475 (61.0%) | 14,996 (39.0%) |
| Etobicoke Centre | Toronto West Region | 28,866 (65.3%) | 15,331 (34.7%) |
| Etobicoke-Lakeshore | Toronto West Region | 26,115 (61.2%) | 16,576 (38.8%) |
| Etobicoke North | Toronto West Region | 15,176 (57.7%) | 11,131 (42.3%) |
| Parkdale—High Park | Toronto West Region | 18,067 (45.7%) | 21,444 (54.3%) |
| Scarborough—Agincourt | Toronto East Region | 19,258 (60.1%) | 12,808 (39.9%) |
| Scarborough Centre | Toronto East Region | 19,284 (60.8%) | 12,457 (39.2%) |
| Scarborough-Guildwood | Toronto East Region | 19,544 (60.0%) | 13,050 (40.0%) |
| Scarborough—Rouge River | Toronto East Region | 18,230 (55.0%) | 14,892 (45.0%) |
| Scarborough Southwest | Toronto East Region | 18,699 (59.2%) | 12,894 (40.8%) |
| St. Paul's | Toronto South Region | 24,120 (55.2%) | 19,595 (44.8%) |
| Toronto Centre | Toronto South Region | 22,039 (50.2%) | 21,903 (49.8%) |
| Toronto—Danforth | Toronto South Region | 16,767 (44.4%) | 20,991 (55.6%) |
| Trinity—Spadina | Toronto South Region | 17,747 (40.7%) | 25,815 (59.3%) |
| York Centre | Toronto North Region | 19,420 (60.3%) | 12,774 (39.7%) |
| York South—Weston | Toronto West Region | 17,006 (56.7%) | 12,991 (43.3%) |
| York West | Toronto West Region | 12,092 (54.3%) | 10,194 (45.7%) |
| Totals | | 416,200 (55.4%) | 334,756 (44.6%) |

## Province-wide results summary

| Region set | First-past-the-post | Mixed-member proportional |
| Excluding Toronto | 2,297,820 (64.8%) | 1,246,985 (35.2%) |
| Toronto Regions | 416,200 (55.4%) | 334,756 (44.6%) |
| All Regions | 2,714,020 (63.2%) | 1,581,741 (36.8%) |