# 2018 Ontario general election

The 2018 Ontario general election was held on June 7, 2018, to elect the 124 members of the 42nd Parliament of Ontario. The Progressive Conservative Party of Ontario, led by Doug Ford, won 76 of the 124 seats in the legislature and formed a majority government. The Ontario New Democratic Party, led by Andrea Horwath, formed the Official Opposition. The Ontario Liberal Party, led by incumbent Premier Kathleen Wynne, lost official party status in recording both the worst result in the party's 161-year history and the worst result for any incumbent governing party in Ontario. The Green Party of Ontario won a seat for the first time in their history, while the Trillium Party of Ontario lost its single seat gained by a floor-crossing during the 41st Parliament.

## Background
### Redistribution of seats

The Electoral Boundaries Act, 2015 increased the number of electoral districts from 107 to 122, following the boundaries set out by the federal 2013 Representation Order for Ontario, while preserving the special boundaries of the 11 seats in Northern Ontario set out in the 1996 redistribution.
The Far North Electoral Boundaries Commission, appointed in 2016, recommended the creation of the additional districts of Kiiwetinoong and Mushkegowuk—James Bay, carved out from the existing Kenora—Rainy River and Timmins—James Bay ridings, which accordingly raised the total number of seats to 124. This was implemented through the Representation Statute Law Amendment Act, 2017.
The new districts have been criticized as undemocratic, as they have a population of around 30,000 people compared with over 120,000 people in some southern Ontario constituencies. National Post columnist Josh Dehaas suggested that the small population sizes of the ridings might violate the Canadian Charter of Rights and Freedoms.
In September 2017, a research firm analyzed the impact of redistribution if the boundaries had been in effect for the previous election.

### Change of fixed election date

Under legislation passed in 2005, Ontario elections were to be held on "the first Thursday in October in the fourth calendar year following polling day in the most recent general election", subject to the Lieutenant-Governor of Ontario's power to call an election earlier. As the current government had a majority, the passage of a non-confidence motion was not a likely option for calling an early election, though Premier Kathleen Wynne stated in June 2015 that she would likely advise to dissolve the Legislature in spring 2018 rather than in October of that year in order to avoid any conflict with municipal elections and take advantage of better weather and longer days.
To put this on a statutory footing, in October 2016 Attorney General of Ontario Yasir Naqvi introduced a bill in the Legislative Assembly which, in part, included moving the election date to "the first Thursday in June in the fourth calendar year following polling day in the most recent general election", and it came into effect in December 2016.

### Prelude to campaign

The Ontario Liberal Party attempted to win their fifth consecutive general election, dating back to 2003. The Progressive Conservative Party of Ontario won their first election since 1999, and the Ontario New Democratic Party attempted to win their second election (having previously won in 1990). Numerous other extra-parliamentary political parties also vied for votes.
The Liberals under Kathleen Wynne headed into the 2018 campaign trailing far behind the Progressive Conservatives, led by former Toronto City Councillor Doug Ford. The Liberals' standing with voters had been badly hurt when they partially privatized Hydro One in 2015, after campaigning against it in the 2014 election, as well as rising criticism over "ballooning provincial debt, high electricity prices and costly, politically expedient decisions". In early April, the CBC published their analysis of aggregate polls showing that Ford and the Progressive Conservatives were ahead of the other parties averaging 42.1% support, compared to 27.2% for the governing Liberals, 23.4% for the NDP and 5.7% for the Greens and with 11 Liberal MPPs announcing they would not be running for re-election or having already resigned their seats in the months leading up to the election.
According to Wynne, voters were offered a "stark choice", between "cutting and removing supports from people" with "billions in cuts", which she alleged the Progressive Conservatives would do if they won the election, and expanding investments in social programs such as prescription drugs and childcare, which the Liberal platform promised.
In March 2018, the Liberals tabled a pre-election budget in the provincial legislature which promised billions of dollars in new spending for free childcare and expanded coverage for dental care but replaced the government's previous balanced budget with a $6.7 billion deficit projected to last until 2024–2025. PC leader Doug Ford called the budget a "spending spree".

### Mood of the voters

According to Toronto Star columnist Susan Delacourt, voters were motivated by a desire for change—such desire being more driven by emotion than by ideology—and one researcher estimated that more than half of the electorate was undecided in who they were likely to vote for. The Huffington Post reported that half of voters were basing their vote intentions on how best to block the party they oppose.
In February 2018, Campaign Research conducted a gap analysis on voter intentions in Ontario, and determined the following:
Voter gap analysis by party (February 2018) :
| Liberal | PC | NDP | Highlights |
| 64% 6% 6% 10% 13% | 51% 7% 6% 10% 26% | 61% 9% 13% 6% 11% | PCs had the lowest proportion of respondents (51%) not willing to vote for them at all, while the Liberals had the highest such proportion (64%) At 13%, the Liberals' "hard support" was only half that for the PCs For PCs, the strength of "hard support" increases with age, and older demographics tend to be more reliable voters Conversely, such support for the Liberals and NDP significantly declines with age, with almost ¾ of those aged 55+ not willing to vote for them at all |
| = Not voting for party; not considered  = Not voting for party; shared consideration  = Not voting for party; exclusive consideration  = Will vote for party; others considered  = Will vote for party; no others considered ||||

## Events leading up to the election (2014–2018)

| Date | |
| June 12, 2014 | The Liberal Party under Kathleen Wynne wins a majority government in the 41st Ontario general election. Progressive Conservative leader Tim Hudak announces his intention to step down following the selection of his successor. |
| July 2, 2014 | Tim Hudak resigns as leader of the Progressive Conservatives. Simcoe—Grey MPP Jim Wilson is named interim leader. |
| July 24, 2014 | The Liberals pass their May 1 budget in its final reading. |
| May 9, 2015 | Patrick Brown, the Conservative federal MP for Barrie, is elected leader of the Progressive Conservative Party. |
| September 24, 2015 | Ontario Provincial Police lay charges in relation to the Sudbury by-election scandal. |
| November 1, 2016 | Ontario Provincial Police announce charges under the provincial act against Gerry Lougheed and Patricia Sorbara (CEO and director of the 2018 Liberal campaign) for alleged bribery during a 2015 byelection. Sorbara announced that she will step down from the campaign. |
| January 24, 2018 | CTV News reports that Progressive Conservative Party leader Patrick Brown is accused by two women of committing sexual misconduct. Brown denies the allegations. |
| January 25, 2018 | Patrick Brown resigns as leader of the Progressive Conservative Party. |
| January 26, 2018 | Progressive Conservative Party caucus chooses Nipissing MPP Vic Fedeli as interim leader. |
| March 10, 2018 | Doug Ford is elected leader of the Progressive Conservatives on the third ballot of the party's leadership election. Fedeli continues as Leader of the Opposition for legislative purposes until the election due to Ford not having a seat in the Legislature. |
| April 11, 2018 | First Leaders Debate hosted by the Jamaican Canadian Association. Andrea Horwath, Mike Schreiner, and Premier Kathleen Wynne were in attendance. |
| April 16, 2018 | The Ontario NDP release their full election platform. |
| May 7, 2018 | First televised debate hosted by CityNews: Toronto-focused debate with Ford, Horwath and Wynne |
| May 9, 2018 | Electoral Writ issued. |
| May 11, 2018 | Leaders' debate in Parry Sound. |
| May 17, 2018 | Candidate nominations close at 2 PM local time. |
| May 26, 2018 | Advance voting starts at voting locations and returning offices. |
| May 27, 2018 | Second televised debate, moderated by Steve Paikin and Farah Nasser, held at the Canadian Broadcasting Centre in Toronto and aired on CBC, CTV, Global, TVO, CPAC, CHCH and other outlets. Attended by Wynne, Ford, and Horwath. |
| May 30, 2018 | Advance voting ends at advance voting locations. |
| June 1, 2018 | Advance voting ends at returning offices. |
| June 2, 2018 | Premier Wynne concedes that the Liberals will not win the election. |
| June 6, 2018 | Special ballot voting at returning office or through home visit ends at 6:00 PM EST. |
| June 7, 2018 | Election day. Fixed-date of the 2018 provincial election. |

## Campaign period
### Contests

Candidate contests in the ridings :
| Candidates nominated | Ridings | Party | Party | Party | Party | Party | Party | Party | Party | Party | Party | Party | Party | Party | Party | Party |
| Candidates nominated | Ridings | PC | NDP | Lib | Green | Ltn | NOTA | Ind | Tr | Mod | Free | Comm | Cons | NO | Oth | Totals |
| 4 | 2 | 2 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 |
| 5 | 19 | 19 | 19 | 19 | 19 | 15 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 95 |
| 6 | 43 | 43 | 43 | 43 | 43 | 43 | 5 | 5 | 8 | 6 | 2 | 3 | 1 | 6 | 7 | 258 |
| 7 | 33 | 33 | 33 | 33 | 33 | 32 | 21 | 7 | 11 | 5 | 6 | 2 | 4 | 2 | 9 | 231 |
| 8 | 15 | 15 | 15 | 15 | 15 | 15 | 9 | 8 | 3 | 1 | 3 | 6 | 5 | 1 | 9 | 120 |
| 9 | 10 | 10 | 10 | 10 | 10 | 10 | 5 | 9 | 3 | 4 | 3 | 1 | 0 | 0 | 15 | 90 |
| 10 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 10 |
| 11 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 11 |
| Total | 124 | 124 | 124 | 124 | 124 | 117 | 42 | 32 | 25 | 16 | 14 | 12 | 10 | 10 | 49 | 823 |
* ↑ Minor political parties fielding fewer than ten candidates are aggregated together.

### Issues

2018 Ontario election – issues and respective party platforms :
| Issue | Liberal | PC | NDP |
| Budget | Standing by its last budget's assertion of six consecutive deficits, with a return to balance in 2024–25 | Conduct a value-for-money audit of the government's spending Conduct an independent commission of inquiry into the previous government's spending Centralize government purchasing Increase the Risk Management Program limit by $50 million annually Eliminate the Jobs and Prosperity fund | There will be five consecutive deficits of between $5 billion and $2 billion. |
| Child care | Publicly-funded child care for all Ontarians aged two-and-a-half to junior kindergarten age, regardless of income | Fund a sliding scale of tax rebates, providing up to $6,750 per child under 15 and giving low-income families as much as 75% of their child-care costs | Income-based scale for child care, providing publicly-funded child care for families earning under $40,000 annually and public funding to reduce the cost of childcare to an average of $12 per day cost for those making over $40,000 |
| Education | Modernize the curriculum and assessment of schools, from kindergarten to grade 12 $3 billion in capital grants over 10 years to post-secondary institutions | Replace the present curricula for sex education Return to traditional mathematics education Ban cell phones in all primary and secondary school classrooms Limit funding to postsecondary institutions that do not respect free speech Make mathematics training mandatory in teachers’ college Increase funding for children with autism by $38 million | $16 billion in spending over 10 years on infrastructure and repairs at Ontario's schools Cap kindergarten class sizes at 26 students Abolish standardized EQAO testing Give OSAP-qualified students non-repayable grants instead of loans Remove interest from existing student loans and apply interest that has already been paid to the loan principal |
| Environment | Proceed with April 2018 announcement to spend $1.7 billion over three years towards retrofitting homes for energy efficiency | Hire more conservation officers Create an emissions-reduction fund to subsidize new technologies that reduce emissions Increase funding for cleaning up garbage | Divert at least 25% of cap-and-trade revenue to help northern, rural and low-income Ontarians adapt to a lower-carbon lifestyle Spend $50 million on a home-efficiency retrofit program |
| Healthcare | Create 30,000 new long-term care beds by 2028 Create a publicly-funded universal pharmacare program for seniors Hire 400 new mental health workers in schools | Create 30,000 new long-term care beds by 2028 Increase funding for mental health Increase funding for autism treatment by $125 million per year | Create a publicly-funded universal pharmacare program for everyone that covers approximately 125 medications Create 40,000 new long-term care beds by 2028 Create 2,000 new hospital beds Hire 4,500 new nurses |
| Electricity | Standing by its 2017 plan to defer rate increases through current borrowing Will proceed to sell the Province's remaining 60% interest in Hydro One | Cut rates by 12%, over and above the Liberals' current 25% reduction Fire the CEO and Board of Hydro One Cancel energy contracts that are in the pre-construction stage | Return Hydro One to 100% public ownership Reduce rates by 30% End time-of-use pricing |
| Regulation | Increase the minimum wage to $15 per hour in 2019 End geographic price variations in car insurance rates | Keep the minimum wage at $14 per hour Allow the sale of beer and wine in corner stores, grocery stores, and box stores Reduce the minimum price of beer from $1.25 to $1 | Increase the minimum wage to $15 per hour in 2019 Allow illegal immigrants to access all government services and do not enforce federal immigration laws against them Impose price controls on gasoline |
| Taxation | Proceed with last budget's simplification of rate structure for personal income tax Raise taxes on cigarettes by $4 per carton Increase taxes on people making over $95,000 per year | Reduce middle-class income tax rates by 20% Eliminate income tax entirely for minimum-wage earners Repeal the present cap and trade program Challenge the federal carbon tax in court Reduce the small business income tax rate by 8.7% Reduce gasoline taxes by 10¢ per litre Reduce diesel taxes by 10.3¢ per litre Reduce the corporate income tax rate from 11.5% to 10.5% Reduce aviation fuel taxes for Northern Ontario flights Exempt the Royal Canadian Legion from being charged property tax | Raise corporate tax rate from 11.5% to 13% Raise income taxes on people earning over $220,000 by 1% Raise income taxes on people earning over $300,000 by 2% |
| Transportation | Fund $79 billion for various public-transit projects over 14 years Build a Toronto-to-Windsor high-speed rail line Fund an expansion of light rail O-Train in Ottawa | $5 billion in extra funding for new subways in Toronto Upload ownership and construction of subway lines from the municipal government to the provincial government Build the Relief Line subway line Build the Yonge Extension subway line Build future crosstown expansions underground Expand all-day two-way GO service Bowmanville and Kitchener Finish construction of the Niagara GO Expansion Restore operations of the Northlander in Northern Ontario Fund an expansion of light rail O-Train in Ottawa Ensure that the Scarborough Subway Extension to the Scarborough Town Centre will have three stops Build the Sheppard Loop with the Scarborough Subway Extension | Cover 50% of the operating costs of municipal transit services Build the Relief Line in Toronto Restore operations of the Northlander in Northern Ontario Bring in two-way all-day service on GO Transit's Kitchener line Construct the LRT line in Hamilton Electrify the existing GO lines and the Union Pearson Express Remove tolls on the Highway 412 and prevent tolls for the Highway 418 |

### Party slogans

| Party | English | French | Translation of French (unofficial) |
| █ Liberal | "Care over cuts" | | |
| █ PC | "For the People" | | |
| █ New Democratic | "Change for the better" | "Changeons pour le mieux" | Let's change for the better |
| █ Green | "People Powered Change" | | |
| █ Libertarian | "The Party of Choice" | | |

### Endorsements

Endorsements received by each party :
| Type | Liberal | PC | NDP | Green | No endorsement |
| Media | | Postmedia Network The London Free Press Toronto Sun National Post Ottawa Citizen Ajax News Advertiser | Toronto Star Metroland Media Group The Hamilton Spectator Niagara Falls Review Le Droit | Toronto Star (Riding of Guelph only) | The Globe and Mail Waterloo Region Record Laurentian Media Group |
| Politicians and public figures | Justin Trudeau Hazel McCallion (Riding of Mississauga—Lakeshore only) | Andrew Scheer Hazel McCallion Kevin O'Leary Mel Lastman Stephen Harper | Jagmeet Singh Michael Coren Jerry Dias Bernie Farber Kay Gardner David Miller Judy Rebick Kristyn Wong-Tam Charles Pascal Sandy Hudson Olivia Chow | Elizabeth May David Suzuki | |
| Unions and business associations | | Ontario Convenience Stores Association Ottawa Police Association United Steelworkers Local 2251 | Elementary Teachers' Federation of Ontario Canadian Union of Public Employees Ontario Steelworkers Amalgamated Transit Union | | |

## Candidates
### Candidate nominations

In February 2018, the PC leadership overturned the nomination of candidates Karma Macgregor in Ottawa West—Nepean and Thenusha Parani in Scarborough Centre because of irregularities and allegations of ballot stuffing at their nomination meetings. Both candidates denied these claims. The nomination meetings were reorganized, and both candidates lost the nomination at those meetings. However, the PC leadership decided not to overturn the nomination meeting's result in Hamilton West—Ancaster—Dundas, where a similar situation took place, because of an ongoing police investigation on this situation.
In March 2018, the NDP nominated Lyra Evans as their candidate in Ottawa—Vanier. Evans was the first openly transgender candidate nominated by a major party to run in an Ontario general election.

### Incumbents not running for reelection

| Electoral District | Incumbent at dissolution and subsequent nominee | Incumbent at dissolution and subsequent nominee | New MPP | New MPP |
| Brant (now Brantford—Brant) | Dave Levac | Ruby Toor | | Will Bouma |
| Glengarry—Prescott—Russell | Grant Crack | Pierre Leroux | | Amanda Simard |
| Guelph | Liz Sandals | Sly Castaldi | | Mike Schreiner |
| Kenora—Rainy River | Sarah Campbell | Glen Archer | | Greg Rickford |
| Kitchener—Conestoga | Michael Harris | – | | Mike Harris Jr. |
| London North Centre | Deb Matthews | Kate Graham | | Terence Kernaghan |
| Markham—Unionville | Michael Chan | Amanda Yeung Collucci | | Billy Pang |
| Parkdale—High Park | Cheri DiNovo | Bhutila Karpoche | | Bhutila Karpoche |
| Mississauga—Erindale | Harinder Takhar | Riding dissolved | Riding dissolved | Riding dissolved |
| Pickering—Scarborough East | Tracy MacCharles | Riding dissolved | Riding dissolved | Riding dissolved |
| Scarborough Centre | Brad Duguid | Mazhar Shafiq | | Christina Mitas |
| Simcoe North | Patrick Brown | – | | Jill Dunlop |
| Welland (now Niagara Centre) | Cindy Forster | Jeff Burch | | Jeff Burch |
| York Centre | Monte Kwinter | Ramon Estaris | | Roman Baber |
| York—Simcoe | Julia Munro | Caroline Mulroney | | Caroline Mulroney |
| York West (now Humber River—Black Creek) | Mario Sergio | Deanna Sgro | | Tom Rakocevic |

## Results

| 76 | 40 | 7 | 1 |
| Progressive Conservative | New Democratic | Liberal | G |
Elections Ontario used electronic vote tabulator machines from Dominion Voting Systems for counting the ballots. Tabulators were deployed at 50 per cent of polling stations at a cost of CA$32,000,000. This election was the first time Ontario used vote counting machines for a provincial election, although tabulators have been used in Ontario civic elections for more than 20 years, and also in a 2016 by-election in Whitby-Oshawa. The original paper ballots marked by voters will be kept for a year along with the digital scans of each ballot by the tabulator.
* The percentage of votes cast for the Progressive Conservatives by riding.
* The percentage of votes cast for the NDP by riding.
* The percentage of votes cast for the Liberals by riding.
* Change in Progressive Conservative vote share by riding compared to the 2014 Ontario election.
* Each dot represents five-thousand votes for the party of the associated colour. Data is based on individual riding results. Dots are placed at random positions within the ridings that they belong to.
* A cartogram showing popular vote in each riding.
* The disproportionality of elections to the Legislative Assembly in the 2018 election was 17.96 according to the Gallagher Index, significantly in favour of the PCs.
| Party | Votes | Votes | Votes | Seats |
| Progressive Conservative | 2,326,632 | 40.50% | 9.25pp | 76 / 124 (61%) |
| New Democratic | 1,929,649 | 33.59% | 9.84pp | 40 / 124 (32%) |
| Liberal | 1,124,218 | 19.57% | 19.08pp | 7 / 124 (6%) |
| Green | 264,487 | 4.60% | 0.24pp | 1 / 124 (0.8%) |
Popular vote
PC
40.50%
New Democratic
33.59%
Liberal
19.57%
Green
4.60%
Others
1.74% :
Seat summary
PC
61.29%
New Democratic
32.26%
Liberal
5.65%
Green
0.81% :

### Synopsis of results

Results by riding - 2018 Ontario general election :
| Riding | Winning party | Winning party | Winning party | Winning party | Winning party | Winning party | Winning party | Winning party | Winning party | Winning party | Turnout | Votes | Votes | Votes | Votes | Votes | Votes | Votes |
| Riding | 2014 | 2014 | 1st place | 1st place | Votes | Share | Margin # | Margin % | 2nd place | 2nd place | Turnout | PC | NDP | Lib | Green | Ind | Other | Total |
| Ajax | | Lib | | PC | 19,078 | 39.1% | 3,948 | 8.1% | | NDP | 54.6% | 19,078 | 15,130 | 12,607 | 1,224 | 220 | 601 | 48,860 |
| Algoma—Manitoulin | | NDP | | NDP | 17,105 | 58.6% | 9,962 | 34.1% | | PC | 53.1% | 7,143 | 17,105 | 2,365 | 1,025 | – | 1,573 | 29,211 |
| Aurora—Oak Ridges—Richmond Hill | New | New | | PC | 25,214 | 56.0% | 15,496 | 34.4% | | Lib | 55.4% | 25,214 | 9,718 | 8,116 | 1,195 | – | 755 | 44,998 |
| Barrie—Innisfil | | Lib | | PC | 22,121 | 50.0% | 9,460 | 21.4% | | NDP | 54.3% | 22,121 | 12,661 | 5,543 | 3,190 | – | 757 | 44,272 |
| Barrie—Springwater—Oro-Medonte | New | New | | PC | 20,445 | 44.7% | 7,554 | 16.5% | | NDP | 57.0% | 20,445 | 12,891 | 6,210 | 5,354 | 335 | 454 | 45,689 |
| Bay of Quinte | | Lib | | PC | 24,224 | 48.0% | 8,161 | 16.2% | | NDP | 56.5% | 24,224 | 16,063 | 7,511 | 1,730 | 379 | 535 | 50,442 |
| Beaches—East York | | Lib | | NDP | 24,064 | 48.2% | 10,584 | 21.2% | | Lib | 61.2% | 9,202 | 24,064 | 13,480 | 2,128 | 161 | 879 | 49,914 |
| Brampton Centre | New | New | | NDP | 12,892 | 38.4% | 89 | 0.3% | | PC | 50.3% | 12,803 | 12,892 | 5,825 | 1,053 | – | 1,025 | 33,598 |
| Brampton East | | NDP | | NDP | 18,062 | 46.9% | 5,166 | 13.4% | | PC | 51.2% | 12,896 | 18,062 | 6,398 | 523 | – | 616 | 38,495 |
| Brampton North | | Lib | | NDP | 14,877 | 37.5% | 497 | 1.3% | | PC | 51.7% | 14,380 | 14,877 | 8,410 | 1,366 | – | 591 | 39,624 |
| Brampton South | New | New | | PC | 15,652 | 41.0% | 2,733 | 7.2% | | NDP | 51.6% | 15,652 | 12,919 | 7,212 | 1,472 | – | 914 | 38,169 |
| Brampton West | | Lib | | PC | 14,951 | 39.4% | 490 | 1.3% | | NDP | 49.9% | 14,951 | 14,461 | 7,013 | 999 | – | 537 | 37,961 |
| Brantford—Brant | | Lib | | PC | 24,437 | 39.4% | 635 | 1.1% | | NDP | 47.7% | 24,437 | 23,802 | 5,553 | 2,741 | – | 1,655 | 58,188 |
| Bruce—Grey—Owen Sound | | PC | | PC | 26,874 | 54.7% | 15,037 | 30.6% | | NDP | 57.2% | 26,874 | 11,837 | 6,041 | 2,927 | – | 1,449 | 49,129 |
| Burlington | | Lib | | PC | 25,504 | 40.4% | 7,451 | 11.8% | | NDP | 58.4% | 25,504 | 18,053 | 15,515 | 2,828 | – | 1,155 | 63,055 |
| Cambridge | | Lib | | PC | 17,793 | 37.0% | 2,154 | 4.5% | | NDP | 63.4% | 17,793 | 15,639 | 11,191 | 3,018 | – | 490 | 48,131 |
| Carleton | New | New | | PC | 25,798 | 51.3% | 14,490 | 28.8% | | NDP | 55.2% | 25,798 | 11,308 | 9,768 | 1,985 | 91 | 1,308 | 50,258 |
| Chatham-Kent—Leamington | | PC | | PC | 24,078 | 51.9% | 7,520 | 16.2% | | NDP | 62.0% | 24,078 | 16,558 | 3,736 | 1,643 | 358 | – | 46,373 |
| Davenport | | Lib | | NDP | 27,613 | 60.3% | 19,055 | 41.6% | | Lib | 56.8% | 7,370 | 27,613 | 8,558 | 1,624 | 69 | 585 | 45,819 |
| Don Valley East | | Lib | | Lib | 13,012 | 35.9% | 1,028 | 2.8% | | PC | 55.2% | 11,984 | 9,937 | 13,012 | 917 | – | 367 | 36,217 |
| Don Valley North | New | New | | PC | 18,046 | 44.4% | 5,489 | 13.5% | | Lib | 53.8% | 18,046 | 8,476 | 12,557 | 1,039 | – | 489 | 40,607 |
| Don Valley West | | Lib | | Lib | 17,802 | 38.9% | 181 | 0.4% | | PC | 61.3% | 17,621 | 8,620 | 17,802 | 1,268 | – | 466 | 45,777 |
| Dufferin—Caledon | | PC | | PC | 29,704 | 53.1% | 18,323 | 32.7% | | NDP | 56.6% | 29,704 | 11,381 | 6,972 | 7,011 | – | 888 | 55,956 |
| Durham | | Lib | | PC | 28,575 | 47.0% | 9,322 | 15.3% | | NDP | 59.9% | 28,575 | 19,253 | 10,237 | 2,360 | – | 382 | 60,807 |
| Eglinton—Lawrence | | Lib | | PC | 19,999 | 40.4% | 957 | 1.9% | | Lib | 60.1% | 19,999 | 8,985 | 19,042 | 1,190 | – | 311 | 49,527 |
| Elgin—Middlesex—London | | PC | | PC | 29,264 | 55.5% | 12,341 | 23.4% | | NDP | 59.4% | 29,264 | 16,923 | 3,857 | 2,029 | – | 694 | 52,767 |
| Essex | | NDP | | NDP | 26,134 | 47.9% | 2,711 | 5.0% | | PC | 56.1% | 23,423 | 26,134 | 3,026 | 1,920 | – | – | 54,503 |
| Etobicoke Centre | | Lib | | PC | 24,432 | 43.0% | 4,724 | 8.3% | | Lib | 61.9% | 24,432 | 10,311 | 19,708 | 1,329 | 162 | 883 | 56,825 |
| Etobicoke—Lakeshore | | Lib | | PC | 22,626 | 38.3% | 3,225 | 5.5% | | NDP | 58.6% | 22,626 | 19,401 | 14,305 | 2,138 | – | 523 | 58,993 |
| Etobicoke North | | Lib | | PC | 19,055 | 52.5% | 9,845 | 27.1% | | NDP | 50.6% | 19,055 | 9,210 | 6,601 | 1,026 | – | 414 | 36,306 |
| Flamborough—Glanbrook | New | New | | PC | 22,454 | 43.5% | 4,824 | 9.4% | | NDP | 60.6% | 22,454 | 17,630 | 7,967 | 2,307 | – | 1,230 | 51,588 |
| Glengarry—Prescott—Russell | | Lib | | PC | 19,952 | 41.0% | 4,543 | 9.3% | | Lib | 55.4% | 19,952 | 10,610 | 15,409 | 1,427 | – | 1,292 | 48,690 |
| Guelph | | Lib | | Grn | 29,082 | 45.0% | 14,998 | 23.4% | | PC | 61.1% | 14,084 | 13,929 | 6,537 | 29,082 | – | 945 | 64,577 |
| Haldimand—Norfolk | | PC | | PC | 28,889 | 57.1% | 15,280 | 30.2% | | NDP | 59.2% | 28,889 | 13,609 | 4,656 | 2,095 | – | 1,344 | 50,593 |
| Haliburton—Kawartha Lakes—Brock | | PC | | PC | 32,406 | 56.7% | 17,264 | 30.2% | | NDP | 59.7% | 32,406 | 15,142 | 5,655 | 2,551 | – | 1,389 | 57,143 |
| Hamilton Centre | | NDP | | NDP | 23,866 | 65.2% | 18,136 | 49.6% | | PC | 48.9% | 5,730 | 23,866 | 3,982 | 2,102 | 156 | 739 | 36,575 |
| Hamilton East—Stoney Creek | | NDP | | NDP | 22,518 | 51.1% | 9,834 | 22.3% | | PC | 53.1% | 12,684 | 22,518 | 5,320 | 1,884 | – | 1,614 | 44,020 |
| Hamilton Mountain | | NDP | | NDP | 24,406 | 54.6% | 11,515 | 25.8% | | PC | 56.2% | 12,891 | 24,406 | 4,134 | 2,300 | – | 986 | 44,717 |
| Hamilton West—Ancaster—Dundas | | Lib | | NDP | 23,921 | 43.2% | 6,732 | 12.2% | | PC | 62.3% | 17,189 | 23,921 | 10,960 | 2,302 | 247 | 771 | 55,390 |
| Hastings—Lennox and Addington | New | New | | PC | 22,374 | 50.2% | 7,933 | 17.8% | | NDP | 59.1% | 22,374 | 14,441 | 5,180 | 1,924 | – | 602 | 44,521 |
| Humber River—Black Creek | | Lib | | NDP | 11,573 | 37.4% | 2,206 | 7.1% | | PC | 47.3% | 9,367 | 11,573 | 8,642 | 485 | – | 862 | 30,929 |
| Huron—Bruce | | PC | | PC | 27,646 | 52.4% | 12,320 | 23.3% | | NDP | 63.5% | 27,646 | 15,326 | 7,356 | 1,804 | – | 670 | 52,802 |
| Kanata—Carleton | | PC | | PC | 23,089 | 43.2% | 7,497 | 14.0% | | NDP | 62.3% | 23,089 | 15,592 | 9,090 | 2,827 | – | 2,855 | 53,453 |
| Kenora—Rainy River | | NDP | | PC | 9,748 | 48.6% | 2,255 | 11.2% | | NDP | 54.1% | 9,748 | 7,493 | 2,123 | 707 | – | – | 20,071 |
| King—Vaughan | New | New | | PC | 29,136 | 56.6% | 17,124 | 33.3% | | Lib | 55.5% | 29,136 | 7,921 | 12,012 | 1,754 | – | 638 | 51,461 |
| Kingston and the Islands | | Lib | | NDP | 21,788 | 39.2% | 6,476 | 11.6% | | Lib | 57.3% | 14,512 | 21,788 | 15,312 | 3,574 | – | 458 | 55,644 |
| Kitchener Centre | | Lib | | NDP | 20,512 | 43.4% | 7,432 | 15.7% | | PC | 58.3% | 13,080 | 20,512 | 9,499 | 3,234 | – | 955 | 47,280 |
| Kitchener—Conestoga | | PC | | PC | 17,005 | 39.6% | 686 | 1.6% | | NDP | 59.9% | 17,005 | 16,319 | 6,035 | 2,853 | – | 762 | 42,974 |
| Kitchener South—Hespeler | New | New | | PC | 16,511 | 38.9% | 770 | 1.8% | | NDP | 55.8% | 16,511 | 15,741 | 6,335 | 3,198 | 275 | 423 | 42,483 |
| Lambton—Kent—Middlesex | | PC | | PC | 27,906 | 58.3% | 11,108 | 22.0% | | NDP | 60.8% | 27,906 | 16,800 | 3,143 | 1,660 | – | 915 | 50,424 |
| Lanark—Frontenac—Kingston | | PC | | PC | 26,194 | 52.0% | 10,855 | 21.6% | | NDP | 62.0% | 26,194 | 15,339 | 5,359 | 2,410 | 440 | 601 | 50,343 |
| Leeds—Grenville—Thousand Islands and Rideau Lakes | | PC | | PC | 30,002 | 61.3% | 20,314 | 41.5% | | NDP | 60.2% | 30,002 | 9,688 | 6,543 | 2,347 | – | 389 | 48,969 |
| London—Fanshawe | | NDP | | NDP | 25,272 | 55.7% | 11,753 | 25.9% | | PC | 49.6% | 13,519 | 25,272 | 3,797 | 2,050 | – | 753 | 45,391 |
| London North Centre | | Lib | | NDP | 25,757 | 47.6% | 9,056 | 16.7% | | PC | 54.9% | 16,701 | 25,757 | 8,501 | 2,493 | – | 661 | 54,113 |
| London West | | NDP | | NDP | 32,644 | 55.3% | 15,511 | 26.3% | | PC | 60.6% | 17,133 | 32,644 | 5,847 | 2,211 | – | 1,161 | 58,996 |
| Markham—Stouffville | | Lib | | PC | 25,912 | 48.1% | 11,905 | 22.1% | | Lib | 58.6% | 25,912 | 10,997 | 14,007 | 2,153 | – | 777 | 53,846 |
| Markham—Thornhill | New | New | | PC | 18,943 | 50.4% | 9,783 | 26.0% | | Lib | 52.2% | 18,943 | 8,010 | 9,160 | 859 | – | 576 | 37,548 |
| Markham—Unionville | | Lib | | PC | 29,305 | 62.4% | 20,849 | 44.4% | | Lib | 54.7% | 29,305 | 7,778 | 8,456 | 996 | – | 405 | 46,940 |
| Milton | New | New | | PC | 18,249 | 41.7% | 5,185 | 11.8% | | Lib | 56.1% | 18,249 | 9,740 | 13,064 | 2,200 | – | 536 | 43,789 |
| Mississauga Centre | New | New | | PC | 17,860 | 40.9% | 5,814 | 13.3% | | NDP | 49.8% | 17,860 | 12,046 | 11,102 | 1,149 | – | 1,553 | 43,710 |
| Mississauga East—Cooksville | | Lib | | PC | 17,862 | 41.1% | 4,739 | 10.9% | | Lib | 51.5% | 17,862 | 9,871 | 13,123 | 1,498 | – | 1,051 | 43,405 |
| Mississauga—Erin Mills | | Lib | | PC | 19,631 | 41.6% | 6,610 | 14.0% | | NDP | 55.1% | 19,631 | 13,021 | 11,965 | 1,296 | – | 1,265 | 47,178 |
| Mississauga—Lakeshore | | Lib | | PC | 22,520 | 42.3% | 3,884 | 14.0% | | Lib | 59.3% | 22,520 | 9,735 | 18,636 | 1,572 | – | 736 | 53,199 |
| Mississauga—Malton | | Lib | | PC | 14,712 | 39.1% | 2,361 | 6.3% | | NDP | 48.4% | 14,712 | 12,351 | 7,813 | 674 | 1,187 | 874 | 37,611 |
| Mississauga—Streetsville | | Lib | | PC | 20,879 | 43.5% | 8,486 | 17.7% | | NDP | 55.5% | 20,879 | 12,393 | 12,344 | 1,349 | – | 999 | 47,964 |
| Nepean | | PC | | PC | 23,899 | 45.1% | 8,789 | 16.6% | | NDP | 58.7% | 23,899 | 15,110 | 10,383 | 2,739 | – | 826 | 52,957 |
| Newmarket—Aurora | | Lib | | PC | 24,813 | 47.7% | 12,408 | 23.9% | | NDP | 59.0% | 24,813 | 12,405 | 11,840 | 1,859 | 447 | 649 | 52,013 |
| Niagara Centre | | NDP | | NDP | 21,618 | 44.2% | 3,285 | 6.7% | | PC | 56.1% | 18,333 | 21,618 | 5,779 | 1,803 | 217 | 1,124 | 48,874 |
| Niagara Falls | | NDP | | NDP | 30,161 | 50.8% | 9,035 | 15.2% | | PC | 54.6% | 21,126 | 30,161 | 5,554 | 2,057 | – | 483 | 59,381 |
| Niagara West | | PC | | PC | 24,394 | 52.8% | 10,625 | 23.0% | | NDP | 63.3% | 24,394 | 13,769 | 4,859 | 2,590 | – | 578 | 46,190 |
| Nickel Belt | | NDP | | NDP | 23,157 | 63.5% | 15,139 | 41.5% | | PC | 55.4% | 8,018 | 23,157 | 3,182 | 1,137 | – | 973 | 36,467 |
| Nipissing | | PC | | PC | 17,598 | 49.9% | 4,604 | 13.1% | | NDP | 58.2% | 17,598 | 12,994 | 2,794 | 997 | – | 860 | 35,243 |
| Northumberland—Peterborough South | | Lib | | PC | 27,386 | 45.3% | 12,582 | 20.8% | | NDP | 64.6% | 27,386 | 14,804 | 14,603 | 2,740 | – | 890 | 60,423 |
| Oakville | | Lib | | PC | 24,837 | 43.7% | 4,510 | 7.9% | | Lib | 62.5% | 24,837 | 9,424 | 20,327 | 1,986 | – | 297 | 56,871 |
| Oakville North—Burlington | | Lib | | PC | 25,691 | 46.4% | 12,195 | 22.0% | | NDP | 60.2% | 25,691 | 13,496 | 13,487 | 2,052 | – | 625 | 55,351 |
| Orléans | | Lib | | Lib | 24,972 | 39.0% | 2,463 | 3.8% | | PC | 62.8% | 22,509 | 14,033 | 24,972 | 1,603 | 435 | 398 | 63,950 |
| Oshawa | | NDP | | NDP | 24,301 | 44.9% | 1,707 | 3.2% | | PC | 54.6% | 22,594 | 24,301 | 4,278 | 1,957 | – | 1,013 | 54,143 |
| Ottawa Centre | | Lib | | NDP | 29,675 | 46.1% | 8,564 | 13.3% | | Lib | 61.2% | 10,327 | 29,675 | 21,111 | 2,266 | – | 1,024 | 64,403 |
| Ottawa South | | Lib | | Lib | 20,773 | 39.6% | 5,454 | 10.4% | | PC | 56.9% | 15,319 | 14,250 | 20,773 | 1,618 | – | 456 | 52,416 |
| Ottawa—Vanier | | Lib | | Lib | 20,555 | 42.9% | 6,323 | 13.2% | | NDP | 51.5% | 10,252 | 14,232 | 20,555 | 1,955 | – | 964 | 47,958 |
| Ottawa West—Nepean | | Lib | | PC | 16,590 | 32.8% | 175 | 0.3% | | NDP | 57.0% | 16,590 | 16,415 | 14,810 | 1,937 | – | 793 | 50,545 |
| Oxford | | PC | | PC | 29,152 | 55.7% | 13,235 | 25.3% | | NDP | 59.2% | 29,152 | 15,917 | 3,620 | 2,254 | 335 | 1,033 | 52,311 |
| Parkdale—High Park | | NDP | | NDP | 32,407 | 59.4% | 22,586 | 41.4% | | PC | 62.4% | 9,821 | 32,407 | 9,271 | 2,544 | – | 506 | 54,549 |
| Parry Sound—Muskoka | | PC | | PC | 22,662 | 48.1% | 12,277 | 26.0% | | NDP | 59.2% | 22,662 | 10,385 | 4,071 | 9,438 | 219 | 368 | 47,143 |
| Perth—Wellington | | PC | | PC | 23,736 | 50.7% | 9,351 | 20.0% | | NDP | 60.3% | 23,736 | 14,385 | 5,062 | 2,746 | – | 914 | 46,843 |
| Peterborough—Kawartha | | PC | | PC | 22,904 | 37.7% | 2,386 | 3.9% | | NDP | 62.7% | 22,904 | 20,518 | 14,946 | 2,024 | – | 398 | 60,790 |
| Pickering—Uxbridge | | Lib | | PC | 22,447 | 42.2% | 5,414 | 10.2% | | NDP | 58.9% | 22,447 | 17,033 | 10,851 | 2,105 | 373 | 384 | 53,193 |
| Renfrew—Nipissing—Pembroke | | PC | | PC | 33,350 | 69.2% | 25,284 | 52.5% | | NDP | 59.7% | 33,350 | 8,066 | 4,701 | 1,436 | – | 646 | 48,199 |
| Richmond Hill | | Lib | | PC | 22,224 | 51.2% | 10,116 | 23.3% | | Lib | 52.2% | 22,224 | 7,490 | 12,108 | 1,248 | – | 301 | 43,371 |
| St. Catharines | | Lib | | NDP | 18,911 | 36.6% | 1,558 | 3.0% | | PC | 58.1% | 17,353 | 18,911 | 12,671 | 1,923 | – | 792 | 51,650 |
| Sarnia—Lambton | | PC | | PC | 26,811 | 52.7% | 7,816 | 15.4% | | NDP | 60.9% | 26,811 | 18,995 | 2,246 | 1,856 | 71 | 851 | 50,830 |
| Sault Ste. Marie | | Lib | | PC | 13,498 | 42.0% | 414 | 1.3% | | NDP | 54.5% | 13,498 | 13,084 | 3,199 | 1,044 | – | 1,292 | 32,117 |
| Scarborough—Agincourt | | Lib | | PC | 18,582 | 50.4% | 8,153 | 22.1% | | Lib | 51.3% | 18,582 | 6,434 | 10,429 | 635 | 189 | 602 | 36,871 |
| Scarborough Centre | | Lib | | PC | 15,266 | 38.4% | 2,019 | 5.1% | | NDP | 53.2% | 15,266 | 13,247 | 8,791 | 919 | – | 1,481 | 39,704 |
| Scarborough—Guildwood | | Lib | | Lib | 11,972 | 33.3% | 74 | 0.2% | | PC | 52.9% | 11,898 | 9,917 | 11,972 | 878 | 66 | 1,174 | 35,905 |
| Scarborough North | | Lib | | PC | 17,413 | 51.0% | 9,093 | 26.7% | | NDP | 50.8% | 17,413 | 8,320 | 7,519 | 543 | – | 318 | 34,113 |
| Scarborough—Rouge Park | New | New | | PC | 16,224 | 38.6% | 963 | 2.3% | | NDP | 55.5% | 16,224 | 15,261 | 8,785 | 1,014 | – | 731 | 42,015 |
| Scarborough Southwest | | Lib | | NDP | 19,835 | 45.7% | 6,270 | 14.4% | | PC | 56.0% | 13,565 | 19,835 | 8,228 | 1,174 | – | 641 | 43,443 |
| Simcoe—Grey | | PC | | PC | 34,094 | 55.9% | 20,650 | 33.9% | | NDP | 57.1% | 34,094 | 13,444 | 8,780 | 4,192 | – | 453 | 60,963 |
| Simcoe North | | PC | | PC | 25,236 | 46.9% | 10,158 | 18.9% | | NDP | 58.9% | 25,236 | 15,078 | 9,523 | 3,632 | – | 320 | 53,789 |
| Spadina—Fort York | | Lib | | NDP | 24,677 | 49.6% | 12,907 | 26.0% | | Lib | 53.4% | 10,834 | 24,677 | 11,770 | 1,815 | – | 635 | 49,731 |
| Stormont—Dundas—South Glengarry | | PC | | PC | 26,780 | 61.5% | 17,364 | 39.9% | | NDP | 54.1% | 26,780 | 9,416 | 5,386 | 1,596 | – | 360 | 43,538 |
| Sudbury | | NDP | | NDP | 17,386 | 48.1% | 8,981 | 24.8% | | PC | 54.2% | 8,405 | 17,386 | 8,108 | 1,504 | 82 | 682 | 36,167 |
| Thornhill | | PC | | PC | 28,889 | 61.1% | 19,755 | 41.8% | | NDP | 56.2% | 28,889 | 9,134 | 6,985 | 1,043 | – | 1,208 | 47,259 |
| Thunder Bay—Atikokan | | Lib | | NDP | 11,793 | 36.3% | 81 | 0.3% | | Lib | 54.7% | 7,555 | 11,793 | 11,712 | 880 | – | 585 | 32,525 |
| Thunder Bay—Superior North | | Lib | | Lib | 11,973 | 39.9% | 813 | 2.7% | | NDP | 53.8% | 5,395 | 11,160 | 11,973 | 838 | – | 669 | 30,035 |
| Timiskaming—Cochrane | | NDP | | NDP | 16,806 | 61.2% | 10,646 | 38.8% | | PC | 53.1% | 6,160 | 16,806 | 2,476 | 723 | – | 1,296 | 27,461 |
| Timmins | | NDP | | NDP | 8,978 | 57.4% | 4,344 | 27.8% | | PC | 48.1% | 4,634 | 8,978 | 1,378 | 273 | – | 370 | 15,633 |
| Toronto Centre | | Lib | | NDP | 23,688 | 53.7% | 11,702 | 26.5% | | Lib | 54.3% | 6,234 | 23,688 | 11,986 | 1,377 | – | 863 | 44,148 |
| Toronto—Danforth | | NDP | | NDP | 32,938 | 64.2% | 24,807 | 48.4% | | PC | 61.6% | 8,131 | 32,938 | 7,216 | 2,248 | 228 | 508 | 51,269 |
| Toronto—St. Paul's | | Lib | | NDP | 18,843 | 36.0% | 1,345 | 2.6% | | Lib | 60.7% | 13,780 | 18,843 | 17,498 | 1,690 | – | 591 | 52,402 |
| University—Rosedale | New | New | | NDP | 24,537 | 49.7% | 13,639 | 27.6% | | Lib | 56.6% | 10,431 | 24,537 | 10,898 | 2,652 | 220 | 674 | 49,412 |
| Vaughan—Woodbridge | | Lib | | PC | 21,687 | 50.5% | 7,945 | 18.5% | | Lib | 56.0% | 21,687 | 6,254 | 13,742 | 972 | – | 291 | 42,946 |
| Waterloo | | NDP | | NDP | 27,315 | 50.5% | 10,342 | 19.1% | | PC | 61.8% | 16,973 | 27,315 | 6,577 | 2,613 | – | 566 | 54,044 |
| Wellington—Halton Hills | | PC | | PC | 31,659 | 54.0% | 17,572 | 30.0% | | NDP | 61.1% | 31,659 | 14,087 | 7,492 | 5,066 | – | 320 | 58,624 |
| Whitby | | PC | | PC | 26,471 | 45.8% | 5,313 | 9.2% | | NDP | 60.3% | 26,471 | 21,158 | 7,441 | 1,958 | – | 768 | 57,796 |
| Willowdale | | Lib | | PC | 17,732 | 43.6% | 6,917 | 17.0% | | Lib | 50.5% | 17,732 | 10,481 | 10,815 | 932 | 233 | 453 | 40,646 |
| Windsor—Tecumseh | | NDP | | NDP | 25,221 | 58.4% | 13,544 | 31.4% | | PC | 47.8% | 11,677 | 25,221 | 3,513 | 1,909 | 863 | – | 43,183 |
| Windsor West | | NDP | | NDP | 20,276 | 52.1% | 9,203 | 23.7% | | PC | 43.3% | 11,073 | 20,276 | 5,722 | 1,393 | – | 435 | 38,899 |
| York Centre | | Lib | | PC | 18,434 | 50.1% | 9,817 | 26.7% | | NDP | 52.9% | 18,434 | 8,617 | 7,865 | 843 | – | 1,002 | 36,761 |
| York—Simcoe | | PC | | PC | 26,050 | 57.3% | 15,395 | 33.8% | | NDP | 54.9% | 26,050 | 10,655 | 6,182 | 2,195 | – | 409 | 45,491 |
| York South—Weston | | Lib | | NDP | 13,455 | 36.1% | 1,165 | 3.1% | | PC | 49.2% | 12,290 | 13,455 | 10,379 | 946 | – | 228 | 37,298 |
| Kiiwetinoong | New | New | | NDP | 3,232 | 49.9% | 1,467 | 22.7% | | PC | 45.8% | 1,765 | 3,232 | 983 | 406 | – | 91 | 6,477 |
| Mushkegowuk—James Bay | New | New | | NDP | 4,827 | 51.8% | 2,032 | 21.8% | | PC | 54.0% | 2,795 | 4,827 | 1,332 | 167 | – | 203 | 9,324 |
* ↑ "Summary of Valid Votes Cast for Each Candidate: 2018 General Election". elections.on.ca. Archived from the original on December 3, 2019. Retrieved December 3, 2019.; "Statistical Summary by Electoral District: 2018 General Election". elections.on.ca. Archived from the original on December 3, 2019. Retrieved December 3, 2019.
* ↑ including spoilt ballots
* ↑ minor political parties receiving less than 1% of the popular vote are aggregated under "Other"; independent candidates are aggregated separately

### Comparative analysis for ridings (2018 vs 2014)

Summary of riding results by turnout and vote share for winning candidate (vs 2014) :
| Riding and winning party | Riding and winning party | Riding and winning party | Riding and winning party | Turnout | Turnout | Turnout | Vote share | Vote share | Vote share | Vote share |
| Riding and winning party | Riding and winning party | Riding and winning party | Riding and winning party | % | Change (pp) | Change (pp) | % | Change (pp) | Change (pp) | Change (pp) |
| Ajax | | PC | Gain | 54.63 | 4.45 | 4.45 | 39.05 | 9.88 | | 9.88 |
| Algoma—Manitoulin | | NDP | Hold | 53.08 | 3.70 | 3.7 | 58.56 | 5.15 | | 5.15 |
| Aurora—Oak Ridges—Richmond Hill | | PC | New | 55.43 | New | New | 56.03 | New | New | New |
| Barrie—Innisfil | | PC | Gain | 54.27 | 5.09 | 5.09 | 49.97 | 13.87 | | 13.87 |
| Barrie—Springwater—Oro-Medonte | | PC | New | 57.05 | New | New | 44.75 | New | New | New |
| Bay of Quinte | | PC | Gain | 56.46 | 4.85 | 4.85 | 48.02 | 6.31 | | 6.31 |
| Beaches—East York | | NDP | Gain | 61.16 | 5.02 | 5.02 | 48.21 | 9.24 | | 9.24 |
| Brampton Centre | | NDP | New | 50.35 | New | New | 38.37 | New | New | New |
| Brampton East | | NDP | Hold | 51.67 | 6.64 | 6.64 | 46.92 | 2.61 | | 2.61 |
| Brampton North | | NDP | Gain | 51.58 | 6.24 | 6.24 | 37.55 | 5.56 | | 5.56 |
| Brampton South | | PC | New | 49.95 | New | New | 41.01 | New | New | New |
| Brampton West | | PC | Gain | 47.67 | 5.17 | 5.17 | 39.39 | 15.05 | | 15.05 |
| Brantford—Brant | | PC | Gain | 57.17 | 4.66 | 4.66 | 42.00 | 12.03 | | 12.03 |
| Bruce—Grey—Owen Sound | | PC | Hold | 58.39 | 4.45 | 4.45 | 54.70 | 7.15 | | 7.15 |
| Burlington | | PC | Gain | 63.45 | 5.72 | 5.72 | 40.45 | 3.46 | | 3.46 |
| Cambridge | | PC | Gain | 55.17 | 6.22 | 6.22 | 36.97 | 4.41 | | 4.41 |
| Carleton | | PC | New | 62.00 | New | New | 51.33 | New | New | New |
| Chatham-Kent—Leamington | | PC | Hold | 56.79 | 5.46 | 5.46 | 51.92 | 14.09 | | 14.09 |
| Davenport | | NDP | Gain | 55.82 | 6.26 | 6.26 | 60.27 | 20.12 | | 20.12 |
| Don Valley East | | Lib | Hold | 55.22 | 7.38 | 7.38 | 35.93 | -19.79 | | |
| Don Valley North | | PC | New | 53.81 | New | New | 44.44 | New | New | New |
| Don Valley West | | Lib | Hold | 61.27 | 7.37 | 7.37 | 38.89 | -18.13 | | |
| Dufferin—Caledon | | PC | Hold | 56.57 | 5.09 | 5.09 | 53.08 | 13.23 | | 13.23 |
| Durham | | PC | Gain | 59.94 | 4.23 | 4.23 | 46.99 | 12.71 | | 12.71 |
| Eglinton—Lawrence | | PC | Gain | 60.11 | 6.12 | 6.12 | 40.38 | 6.62 | | 6.62 |
| Elgin—Middlesex—London | | PC | Hold | 59.45 | 5.47 | 5.47 | 55.46 | 9.10 | | 9.1 |
| Essex | | NDP | Hold | 56.12 | 5.92 | 5.92 | 47.95 | -12.39 | | |
| Etobicoke Centre | | PC | Gain | 61.91 | 5.43 | 5.43 | 43.00 | 10.27 | | 10.27 |
| Etobicoke—Lakeshore | | PC | Gain | 58.61 | 4.88 | 4.88 | 38.35 | 4.00 | | 4 |
| Etobicoke North | | PC | Gain | 50.58 | 7.87 | 7.87 | 52.48 | 29.74 | | 29.74 |
| Flamborough—Glanbrook | | PC | New | 60.58 | New | New | 43.53 | New | New | New |
| Glengarry—Prescott—Russell | | PC | Gain | 55.42 | 2.06 | 2.06 | 40.98 | 8.41 | | 8.41 |
| Guelph | | Green | Gain | 61.12 | 5.65 | 5.65 | 45.03 | 25.74 | | 25.74 |
| Haldimand—Norfolk | | PC | Hold | 59.20 | 5.23 | 5.23 | 57.10 | 4.88 | | 4.88 |
| Haliburton—Kawartha Lakes—Brock | | PC | Hold | 59.66 | 3.68 | 3.68 | 56.71 | 15.75 | | 15.75 |
| Hamilton Centre | | NDP | Hold | 48.91 | 4.15 | 4.15 | 65.25 | 13.24 | | 13.24 |
| Hamilton East—Stoney Creek | | NDP | Hold | 53.06 | 4.22 | 4.22 | 51.15 | 4.34 | | 4.34 |
| Hamilton Mountain | | NDP | Hold | 56.16 | 3.32 | 3.32 | 54.58 | 7.68 | | 7.68 |
| Hamilton West—Ancaster—Dundas | | NDP | Gain | 62.26 | 3.23 | 3.23 | 43.19 | 27.59 | | 27.59 |
| Hastings—Lennox and Addington | | PC | New | 59.10 | New | New | 50.25 | New | New | New |
| Humber River—Black Creek | | NDP | Gain | 47.26 | 5.01 | 5.01 | 37.42 | -1.80 | | |
| Huron—Bruce | | PC | Hold | 63.51 | 3.55 | 3.55 | 52.36 | 13.35 | | 13.35 |
| Kanata—Carleton | | PC | Hold | 62.32 | 6.23 | 6.23 | 43.19 | -4.29 | | |
| Kenora—Rainy River | | PC | Gain | 54.12 | 7.40 | 7.4 | 48.57 | 23.07 | | 23.07 |
| King—Vaughan | | PC | New | 55.52 | New | New | 56.62 | New | New | New |
| Kingston and the Islands | | NDP | Gain | 57.29 | 5.15 | 5.15 | 39.16 | 9.60 | | 9.6 |
| Kitchener Centre | | NDP | Gain | 58.27 | 5.99 | 5.99 | 43.38 | 20.58 | | 20.58 |
| Kitchener—Conestoga | | PC | Hold | 59.93 | 9.60 | 9.6 | 39.57 | 3.21 | | 3.21 |
| Kitchener South—Hespeler | | PC | New | 55.82 | New | New | 38.86 | New | New | New |
| Lambton—Kent—Middlesex | | PC | Hold | 60.77 | 3.84 | 3.84 | 55.34 | 10.17 | | 10.17 |
| Lanark—Frontenac—Kingston | | PC | Hold | 62.03 | 8.08 | 8.08 | 52.03 | 8.51 | | 8.51 |
| Leeds—Grenville—Thousand Islands and Rideau Lakes | | PC | Hold | 60.22 | 7.36 | 7.36 | 61.27 | 5.20 | | 5.2 |
| London—Fanshawe | | NDP | Hold | 49.65 | 3.23 | 3.23 | 55.68 | 5.26 | | 5.26 |
| London North Centre | | NDP | Gain | 54.95 | 4.73 | 4.73 | 47.60 | 17.16 | | 17.16 |
| London West | | NDP | Hold | 60.56 | 4.52 | 4.52 | 55.33 | 14.97 | | 14.97 |
| Markham—Stouffville | | PC | Gain | 58.85 | 12.64 | 12.64 | 48.12 | 10.66 | | 10.66 |
| Markham—Thornhill | | PC | New | 52.21 | New | New | 50.45 | New | New | New |
| Markham—Unionville | | PC | Gain | 54.74 | 10.20 | 10.2 | 62.43 | 28.46 | | 28.46 |
| Milton | | PC | New | 56.11 | New | New | 41.67 | New | New | New |
| Mississauga Centre | | PC | New | 49.79 | New | New | 40.86 | New | New | New |
| Mississauga East—Cooksville | | PC | Gain | 51.48 | 7.58 | 7.58 | 41.15 | 14.96 | | 14.96 |
| Mississauga—Erin Mills | | PC | Gain | 55.13 | 8.23 | 8.23 | 41.61 | 11.72 | | 11.72 |
| Mississauga—Lakeshore | | PC | Gain | 59.33 | 5.78 | 5.78 | 42.33 | 9.13 | | 9.13 |
| Mississauga—Malton | | PC | Gain | 48.37 | 6.90 | 6.9 | 39.12 | 11.89 | | 11.89 |
| Mississauga—Streetsville | | PC | Gain | 55.53 | 8.77 | 8.77 | 43.53 | 15.46 | | 15.46 |
| Nepean | | PC | Hold | 58.73 | 3.34 | 3.34 | 45.13 | -1.64 | | |
| Newmarket—Aurora | | PC | Gain | 58.97 | 5.57 | 5.57 | 47.71 | 10.28 | | 10.28 |
| Niagara Centre | | NDP | Hold | 56.13 | 2.92 | 2.92 | 44.23 | -2.48 | | |
| Niagara Falls | | NDP | Hold | 54.56 | 3.35 | 3.35 | 50.79 | 3.41 | | 3.41 |
| Niagara West | | PC | Hold | 63.28 | 4.68 | 4.68 | 52.81 | 10.99 | | 10.99 |
| Nickel Belt | | NDP | Hold | 55.42 | 5.42 | 5.42 | 63.50 | 0.89 | | 0.89 |
| Nipissing | | PC | Hold | 58.24 | 5.76 | 5.76 | 49.93 | 8.12 | | 8.12 |
| Northumberland—Peterborough South | | PC | Gain | 64.64 | 8.83 | 8.83 | 45.32 | 9.39 | | 9.39 |
| Oakville | | PC | Gain | 62.46 | 6.34 | 6.34 | 43.67 | 5.86 | | 5.86 |
| Oakville North—Burlington | | PC | Gain | 60.20 | 9.30 | 9.3 | 46.41 | 9.31 | | 9.31 |
| Orléans | | Lib | Hold | 62.77 | 3.43 | 3.43 | 39.05 | -14.45 | | |
| Oshawa | | NDP | Hold | 54.58 | 4.39 | 4.39 | 44.88 | -1.82 | | |
| Ottawa Centre | | NDP | Gain | 61.20 | 4.36 | 4.36 | 46.08 | 25.61 | | 25.61 |
| Ottawa South | | Lib | Hold | 56.92 | 3.21 | 3.21 | 39.63 | -10.33 | | |
| Ottawa—Vanier | | Lib | Hold | 51.47 | 2.61 | 2.61 | 42.86 | -12.69 | | |
| Ottawa West—Nepean | | PC | Gain | 57.04 | 1.10 | 1.1 | 32.82 | -1.06 | | |
| Oxford | | PC | Hold | 59.25 | 7.32 | 7.32 | 55.73 | 9.49 | | 9.49 |
| Parkdale—High Park | | NDP | Hold | 62.43 | 5.55 | 5.55 | 59.41 | 18.64 | | 18.64 |
| Parry Sound—Muskoka | | PC | Hold | 59.22 | 7.10 | 7.1 | 48.07 | 7.34 | | 7.34 |
| Perth—Wellington | | PC | Hold | 60.35 | 4.69 | 4.69 | 50.67 | 11.71 | | 11.71 |
| Peterborough—Kawartha | | PC | Hold | 62.74 | 5.45 | 5.45 | 37.68 | 7.85 | | 7.85 |
| Pickering—Uxbridge | | PC | Gain | 58.90 | 4.12 | 4.12 | 42.20 | 13.90 | | 13.9 |
| Renfrew—Nipissing—Pembroke | | PC | Hold | 59.74 | 5.42 | 5.42 | 69.19 | 8.13 | | 8.13 |
| Richmond Hill | | PC | Gain | 52.18 | 6.49 | 6.49 | 51.24 | 14.70 | | 14.7 |
| St. Catharines | | NDP | Gain | 58.06 | 3.25 | 3.25 | 36.61 | 12.21 | | 12.21 |
| Sarnia—Lambton | | PC | Hold | 60.89 | 3.54 | 3.54 | 52.75 | 11.73 | | 11.73 |
| Sault Ste. Marie | | PC | Gain | 54.49 | 3.72 | 3.72 | 42.03 | 29.63 | | 29.63 |
| Scarborough—Agincourt | | PC | Gain | 51.35 | 5.31 | 5.31 | 50.40 | 15.77 | | 15.77 |
| Scarborough Centre | | PC | Gain | 53.19 | 5.10 | 5.1 | 38.45 | 16.87 | | 16.87 |
| Scarborough—Guildwood | | Lib | Hold | 52.93 | 3.69 | 3.69 | 33.34 | -16.55 | | |
| Scarborough North | | PC | Gain | 50.76 | 3.28 | 3.28 | 51.05 | 23.89 | | 23.89 |
| Scarborough—Rouge Park | | PC | New | 55.54 | New | New | 38.61 | New | New | New |
| Scarborough Southwest | | NDP | Gain | 56.04 | 6.12 | 6.12 | 45.66 | 22.01 | | 22.01 |
| Simcoe—Grey | | PC | Hold | 57.08 | 5.08 | 5.08 | 55.93 | 8.81 | | 8.81 |
| Simcoe North | | PC | Hold | 58.88 | 5.55 | 5.55 | 46.92 | 2.96 | | 2.96 |
| Spadina—Fort York | | NDP | Gain | 53.56 | 4.23 | 4.23 | 49.62 | 19.25 | | 19.25 |
| Stormont—Dundas—South Glengarry | | PC | Hold | 54.10 | 2.08 | 2.08 | 61.51 | 9.79 | | 9.79 |
| Sudbury | | NDP | Hold | 54.22 | 2.30 | 2.3 | 48.07 | 5.83 | | 5.83 |
| Thornhill | | PC | Hold | 56.16 | 8.33 | 8.33 | 61.13 | 17.14 | | 17.14 |
| Thunder Bay—Atikokan | | NDP | Gain | 54.74 | 5.72 | 5.72 | 36.26 | 8.15 | | 8.15 |
| Thunder Bay—Superior North | | Lib | Hold | 53.84 | 3.43 | 3.43 | 39.86 | -16.11 | | |
| Timiskaming—Cochrane | | NDP | Hold | 53.08 | 2.41 | 2.41 | 61.20 | 5.72 | | 5.72 |
| Timmins | | NDP | Hold | 48.12 | 2.96 | 2.96 | 57.43 | 6.25 | | 6.25 |
| Toronto Centre | | NDP | Gain | 54.30 | 3.45 | 3.45 | 53.66 | 37.76 | | 37.76 |
| Toronto—Danforth | | NDP | Hold | 61.58 | 6.28 | 6.28 | 64.25 | 19.64 | | 19.64 |
| Toronto—St. Paul's | | NDP | Gain | 60.71 | 3.60 | 3.6 | 35.96 | 25.90 | | 25.9 |
| University—Rosedale | | NDP | New | 56.63 | New | New | 49.66 | New | New | New |
| Vaughan—Woodbridge | | PC | Gain | 55.96 | 11.27 | 11.27 | 50.50 | 22.33 | | 22.33 |
| Waterloo | | NDP | Hold | 61.80 | 6.85 | 6.85 | 50.54 | 13.11 | | 13.11 |
| Wellington—Halton Hills | | PC | Hold | 61.11 | 5.50 | 5.5 | 54.00 | 7.39 | | 7.39 |
| Whitby | | PC | Hold | 60.32 | 5.97 | 5.97 | 45.80 | 5.15 | | 5.15 |
| Willowdale | | PC | Gain | 50.52 | 3.64 | 3.64 | 43.63 | 10.16 | | 10.16 |
| Windsor—Tecumseh | | NDP | Hold | 47.83 | 5.06 | 5.06 | 58.40 | -3.75 | | |
| Windsor West | | NDP | Hold | 43.30 | 0.60 | 0.6 | 52.12 | 10.72 | | 10.72 |
| York Centre | | PC | Gain | 52.92 | 6.18 | 6.18 | 50.15 | 18.68 | | 18.68 |
| York—Simcoe | | PC | Hold | 54.92 | 7.39 | 7.39 | 57.26 | 16.86 | | 16.86 |
| York South—Weston | | NDP | Gain | 49.17 | 3.03 | 3.03 | 36.07 | -1.18 | | |
| Kiiwetinoong | | NDP | New | 45.80 | New | New | 49.90 | New | New | New |
| Mushkegowuk—James Bay | | NDP | New | 54.05 | New | New | 51.77 | New | New | New |

### Detailed results and analysis

Elections to the 42nd Parliament of Ontario (2018) :
| Political party | Political party | Party leader | MPPs | MPPs | MPPs | MPPs | MPPs | Votes | Votes | Votes |
| Political party | Political party | Party leader | Candidates | 2014 | Dissol. | 2018 | ± | # | % | ± (pp) |
| | Progressive Conservative | Doug Ford | 124 | 28 | 27 | 76 | 48 | 2,326,523 | 40.19% | 9.08 |
| | New Democratic | Andrea Horwath | 124 | 21 | 18 | 40 | 19 | 1,929,966 | 33.34% | 9.68 |
| | Liberal | Kathleen Wynne | 124 | 58 | 55 | 7 | 51 | 1,124,346 | 19.42% | 19.10 |
| | Green | Mike Schreiner | 124 | – | – | 1 | 1 | 264,519 | 4.57% | 0.31 |
| | Libertarian | Allen Small | 117 | – | – | – | – | 42,822 | 0.74% | 0.04 |
| | None of the Above | Greg Vezina | 42 | – | – | – | – | 16,146 | 0.28% | 0.20 |
| | Independents and no affiliation | Independents and no affiliation | 32 | – | 2 | – | – | 8,226 | 0.14% | 0.06 |
| | Trillium | Bob Yaciuk | 26 | – | 1 | – | – | 8,091 | 0.14% | 0.13 |
| | Northern Ontario | Trevor Holliday | 10 | – | – | – | – | 5,912 | 0.10% | 0.08 |
| | Consensus Ontario | Brad Harness | 10 | – | – | – | – | 2,682 | 0.05% | New |
| | Freedom | Paul McKeever | 14 | – | – | – | – | 2,565 | 0.04% | 0.20 |
| | Ontario Party | Jason Tysick | 5 | – | – | – | – | 2,316 | 0.04% | New |
| | Moderate | Yuri Duboisky | 16 | – | – | – | – | 2,199 | 0.04% | 0.03 |
| | Communist | Dave McKee | 12 | – | – | – | – | 1,471 | 0.03% | 0.01 |
| | Canadians' Choice Party | Bahman Yazdanfar | 5 | – | – | – | – | 1,239 | 0.02% | 0.01 |
| | Stop the New Sex-Ed Agenda | Queenie Yu | 3 | – | – | – | – | 1,078 | 0.02% | New |
| | Ontario Alliance | Joshua E. Eriksen | 3 | – | – | – | – | 802 | 0.01% | New |
| | New People's Choice Party | Daryl Christoff | 3 | – | – | – | – | 634 | 0.01% | New |
| | Special Needs | Hilton Milan | 5 | – | – | – | – | 631 | 0.01% | |
| | People's Political Party | Kevin Clarke | 6 | – | – | – | – | 628 | 0.01% | 0.01 |
| | Confederation of Regions | vacant | 2 | – | – | – | – | 386 | 0.01% | |
| | Stop Climate Change | Ken Ranney | 2 | – | – | – | – | 340 | 0.01% | New |
| | Canadian Economic Party | Patrick Knight | 2 | – | – | – | – | 321 | 0.01% | New |
| | Go Vegan | Paul Figueiras | 2 | – | – | – | – | 256 | – | 0.02 |
| | Cultural Action Party | Arthur Smitherman | 3 | – | – | – | – | 215 | – | New |
| | Multicultural Party of Ontario | Wasyl Luczkiw | 2 | – | – | – | – | 191 | – | New |
| | Party of Objective Truth | Derrick Matthews | 2 | – | – | – | – | 176 | – | New |
| | Pauper | John Turmel | 2 | – | – | – | – | 112 | – | |
| | Social Reform Party | Abu Alam | 2 | – | – | – | – | 67 | – | New |
| | Vacant | Vacant | Vacant | Vacant | 4 | | | | | |
| Declined ballots | Declined ballots | Declined ballots | Declined ballots | Declined ballots | Declined ballots | Declined ballots | Declined ballots | 22,684 | | |
| Blank and invalid ballots | Blank and invalid ballots | Blank and invalid ballots | Blank and invalid ballots | Blank and invalid ballots | Blank and invalid ballots | Blank and invalid ballots | Blank and invalid ballots | 38,742 | | |
| Total | Total | Total | 825 | 107 | 107 | 124 | | 5,806,286 | 100.00% | |
| Registered voters / turnout | Registered voters / turnout | Registered voters / turnout | Registered voters / turnout | Registered voters / turnout | Registered voters / turnout | Registered voters / turnout | Registered voters / turnout | 10,246,066 | 56.67% | 5.38 |
Incumbents MPPs who lost their seats
38 incumbent Liberal MPPs lost their re-election races, as well as a one Trillium party MPP.
* ‡ means that the Incumbent was originally from a different riding
* "b.e." is a short term for "By-election"
| Constituency | Party | Name | Year first elected | Seat held by party since | Defeated by | Party |
| Ottawa Centre | █ Liberal | Yasir Naqvi | 2007 | 1995 | Joel Harden | █ New Democratic |
| Ottawa West-Nepean | █ Liberal | Bob Chiarelli | 2010 b.e. (previously served from 1987-1997) | 2003 | Jeremy Roberts | █ Progressive Conservative |
| Kingston and the Islands | █ Liberal | Sophie Kiwala | 2014 | 1995 | Ian Arthur | █ New Democratic |
| Barrie-Innisfil | █ Liberal | Ann Hogarth ‡ | 2014 | (new riding) | Andrea Khanjin | █ Progressive Conservative |
| Northumberland—Peterborough South | █ Liberal | Lou Rinaldi ‡ | 2014 (previously served from 2003-2011) | (new riding) | David Piccini | █ Progressive Conservative |
| Peterborough—Kawartha | █ Liberal | Jeff Leal | 2003 | 2003 | Dave Smith | █ Progressive Conservative |
| Ajax | █ Liberal | Joe Dickson‡ | 2007 | (new riding) | Rod Phillips | █ Progressive Conservative |
| Durham | █ Liberal | Granville Anderson | 2014 | 2014 | Lindsey Park | █ Progressive Conservative |
| Brampton North | █ Liberal | Harinder Malhi | 2014 | (new riding) | Kevin Yarde | █ New Democratic |
| Brampton West | █ Liberal | Vic Dhillon | 2003 | 2007 (riding created) | Amarjot Sandhu | █ Progressive Conservative |
| Mississauga East—Cooksville | █ Liberal | Dipika Damerla | 2011 | 2007 (riding created) | Kaleed Rasheed | █ Progressive Conservative |
| Mississauga—Lakeshore | █ Liberal | Charles Sousa | 2007 | 2007 | Rudy Cuzetto | █ Progressive Conservative |
| Mississauga—Malton | █ Liberal | Amrit Mangat | 2007 | (new riding) | Deepak Anand | █ Progressive Conservative |
| Mississauga—Streetsville | █ Liberal | Bob Delaney | 2003 | 2007 (riding created) | Nina Tangri | █ Progressive Conservative |
| Markham—Stouffville | █ Liberal | Helena Jaczek | 2007 | (new riding) | Paul Calandra | █ Progressive Conservative |
| Newmarket—Aurora | █ Liberal | Chris Ballard | 2014 | 2014 | Christine Elliott | █ Progressive Conservative |
| Richmond Hill | █ Liberal | Reza Moridi | 2007 | 2007 (riding created) | Daisy Wai | █ Progressive Conservative |
| Vaughan—Woodbridge | █ Liberal | Steven Del Duca | 2012 b.e. | (new riding) | Michael Tibollo | █ Progressive Conservative |
| Scarborough—Agincourt | █ Liberal | Soo Wong | 2011 | 1987 (riding created) | Aris Babikian | █ Progressive Conservative |
| Scarborough Southwest | █ Liberal | Lorenzo Berardinetti | 2003 | 2003 | Doly Begum | █ New Democratic |
| Eglinton—Lawrence | █ Liberal | Michael Colle | 1995 | 1999 (riding created) | Robin Martin | █ Progressive Conservative |
| Willowdale | █ Liberal | David Zimmer | 2003 | 2003 | Stan Cho | █ Progressive Conservative |
| Beaches—East York | █ Liberal | Arthur Potts | 2014 | 2014 | Rima Berns-McGown | █ New Democratic |
| Davenport | █ Liberal | Cristina Martins | 2014 | 2014 | Marit Stiles | █ New Democratic |
| Spadina—Fort York | █ Liberal | Han Dong | 2014 | (new riding) | Chris Glover | █ New Democratic |
| Etobicoke Centre | █ Liberal | Yvan Baker | 2014 | 2003 | Kinga Surma | █ Progressive Conservative |
| Etobicoke—Lakeshore | █ Liberal | Peter Milczyn | 2014 | 2014 | Christine Hogarth | █ Progressive Conservative |
| Etobicoke North | █ Liberal | Shafiq Qaadri | 2003 | 2003 | Doug Ford | █ Progressive Conservative |
| York South—Weston | █ Liberal | Laura Albanese | 2007 | 2007 | Faisal Hassan | █ New Democratic |
| Burlington | █ Liberal | Eleanor McMahon | 2014 | 2014 | Jane McKenna | █ Progressive Conservative |
| Milton | █ Liberal | Indira Naidoo-Harris | 2014 | (new riding) | Parm Gill | █ Progressive Conservative |
| Oakville | █ Liberal | Kevin Flynn | 2003 | 2003 | Stephen Crawford | █ Progressive Conservative |
| Hamilton West—Ancaster—Dundas | █ Liberal | Ted McMeekin | 2000 b.e. | (new riding) | Sandy Shaw | █ New Democratic |
| St. Catharines | █ Liberal | Jim Bradley | 1977 | 1977 | Jennie Stevens | █ New Democratic |
| Cambridge | █ Liberal | Kathryn McGarry | 2014 | 2014 | Belinda Karahalios | █ Progressive Conservative |
| Kitchener Centre | █ Liberal | Daiene Vernile | 2014 | 2003 | Laura Mae Lindo | █ New Democratic |
| Sudbury | █ Liberal | Glenn Thibeault | 2015 b.e. | 2015 b.e. | Jamie West | █ New Democratic |
| Thunder Bay—Atikokan | █ Liberal | Bill Mauro | 2003 | 1999 (riding created) | Judith Monteith-Farrell | █ New Democratic |
| Kanata—Carleton | █ Trillium | Jack MacLaren | 2011 (as a PC) | 2017 (floor crossing) | Merrilee Fullerton | █ Progressive Conservative |
Principal races, according to 1st and 2nd-place results :
| Parties | Parties | Seats |
| █ Progressive Conservative | █ New Democratic | 90 |
| █ Progressive Conservative | █ Liberal | 22 |
| █ Progressive Conservative | █ Green | 1 |
| █ New Democratic | █ Liberal | 11 |
| Total | Total | 124 |
Candidates ranked 1st to 5th place, by party :
| Parties | 1st | 2nd | 3rd | 4th | 5th | Total |
| █ Progressive Conservative | 76 | 37 | 11 | | | 124 |
| █ New Democratic | 40 | 61 | 23 | | | 124 |
| █ Liberal | 7 | 26 | 88 | 3 | | 124 |
| █ Green | 1 | | 2 | 117 | 4 | 124 |
| █ Libertarian | | | | 1 | 77 | 78 |
| █ None of the Above | | | | | 20 | 20 |
| █ Northern Ontario | | | | 2 | 10 | 12 |
| █ Independent | | | | 1 | 10 | 11 |
| █ Trillium | | | | | 8 | 8 |
| █ Ontario Party | | | | | 5 | 5 |

### Regional analysis

Elections to the Legislative Assembly of Ontario – seats won by region (2018) :
| Party | Party | Toronto | 905 Belt | Ham/Niagara | Central | East | Midwest | Southwest | North | Total |
| | Progressive Conservative | 11 | 21 | 6 | 10 | 11 | 9 | 4 | 4 | 76 |
| | New Democratic | 11 | 4 | 7 | | 2 | 2 | 6 | 8 | 40 |
| | Liberal | 3 | | | | 3 | | | 1 | 7 |
| | Green | | | | | | 1 | | | 1 |
| Total | Total | 25 | 25 | 13 | 10 | 16 | 12 | 10 | 13 | 124 |

### Most marginal 2-way and 3-way contests

Top 10 marginal 2-way contests (2018) :
| Riding | 1st | 2nd | 1st vs 2nd |
| Scarborough—Guildwood | 33.3% | 33.1% | 0.2% |
| Thunder Bay—Atikokan | 36.2% | 36.0% | 0.2% |
| Brampton Centre | 38.4% | 38.1% | 0.3% |
| Ottawa West—Nepean | 32.8% | 32.5% | 0.3% |
| Don Valley West | 38.9% | 38.5% | 0.4% |
| Brantford—Brant | 42.0% | 40.9% | 1.1% |
| Brampton North | 37.5% | 36.3% | 1.2% |
| Sault Ste. Marie | 42.0% | 40.7% | 1.3% |
| Brampton West | 39.4% | 38.1% | 1.3% |
| Kitchener—Conestoga | 39.6% | 38.0% | 1.6% |
Top 10 marginal 3-way contests (2018) :
| Riding | 1st | 2nd | 3rd | 1st vs 3rd |
| Ottawa West—Nepean | 32.8% | 32.5% | 29.3% | 3.5% |
| Scarborough—Guildwood | 33.3% | 33.1% | 27.6% | 5.7% |
| York South—Weston | 36.1% | 33.0% | 27.8% | 8.3% |
| Don Valley East | 35.9% | 33.1% | 27.4% | 8.5% |
| Humber River—Black Creek | 37.4% | 30.3% | 27.9% | 9.5% |
| Toronto—St. Paul's | 36.0% | 33.4% | 26.3% | 9.7% |
| St. Catharines | 36.6% | 33.6% | 24.5% | 12.1% |
| Ottawa South | 39.6% | 29.2% | 27.2% | 12.4% |
| Thunder Bay—Atikokan | 36.2% | 36.0% | 23.2% | 13.0% |
| Kingston and the Islands | 39.2% | 27.5% | 26.1% | 13.1% |

### Significant results among independent and minor party candidates

Those candidates not belonging to a major party, receiving more than 1,000 votes in the election, are listed below:
| Riding | Party | Candidates | Votes | Placed |
| Algoma—Manitoulin | █ N.Ont. Heritage | Tommy Lee | 1,366 | 4th |
| Kanata—Carleton | █ Trillium | Jack MacLaren | 1,947 | 5th |
| Mississauga—Malton | █ Independent | Caroline Roach | 1,187 | 4th |
| Scarborough Centre | █ Libertarian | Matthew Dougherty | 1,040 | 4th |
| Timiskaming—Cochrane | █ N.Ont. Heritage | Shawn Poirier | 1,105 | 4th |

## Opinion polls
### Campaign period

| Polling firm | Last date of polling | Link | Liberal | Progressive Conservative | New Democratic | Green | Other | Margin of error | Sample size | Polling method | Lead |
| Election | June 7, 2018 | Archive | 19.6 | 40.5 | 33.6 | 4.6 | 1.7 | | | | 6.9 |
| Forum Research | June 6, 2018 | PDF | 21 | 39 | 34 | 5 | 1 | ±3 pp | 2,178 | IVR | 5 |
| Research Co. | June 6, 2018 | HTML | 20 | 39 | 37 | 4 | 1 | ±3.8 pp | 661 | Online | 2 |
| EKOS | June 6, 2018 | PDF | 18.9 | 39.1 | 35.1 | 4.5 | 2.4 | ±2.8 pp | 1,230 | IVR | 4.0 |
| Pollara | June 5, 2018 | PDF | 17 | 38 | 38 | 6 | 2 | ±3.3 pp | 906 (1/3) | Online/telephone (rolling) | 0 |
| Ipsos | June 5, 2018 | HTML Archived October 8, 2018, at the Wayback Machine | 19 | 39 | 36 | | 6* | ±3.1 pp | 1,501 | Online/telephone | 3 |
| Mainstreet Research | June 4, 2018 | HTML | 20.2 | 39.0 | 34.3 | 4.9 | 1.7 | ±1.7 pp | 3,320 | IVR | 4.7 |
| Leger | June 4, 2018 | HTML | 18 | 39 | 38 | | 5* | N/A | 1,008 | Online | 1 |
| Pollara | June 4, 2018 | PDF | 17 | 39 | 37 | 6 | 1 | ±3.0 pp | 1,083 (1/4) | Online/telephone (rolling) | 2 |
| Pollara | June 3, 2018 | PDF | 20 | 38 | 37 | 5 | 1 | ±2.7 pp | 1,275 (1/4) | Online/telephone (rolling) | 1 |
| Forum Research | June 2, 2018 | PDF | 18 | 38 | 37 | 5 | 2 | ±3 pp | 2,349 | IVR | 1 |
| Abacus Data | June 2, 2018 | HTML Archived August 4, 2018, at the Wayback Machine | 23 | 33 | 37 | 5 | 2 | ±1.9 pp | 2,646 | Online | 4 |
| Pollara | June 2, 2018 | PDF | 20 | 37 | 37 | 5 | 1 | ±2.6 pp | 1,447 | Online/telephone | 0 |
| EKOS | May 31, 2018 | PDF | 19.3 | 38.6 | 34.9 | 5.9 | 1.2 | ±3.1 pp | 990 (2/3) | IVR (rolling) | 3.7 |
| Research Co. | May 31, 2018 | HTML | 18 | 38 | 39 | 4 | 1 | ±3.7 pp | 701 | Online | 1 |
| Forum Research | May 29, 2018 | PDF | 19 | 39 | 35 | 5 | 2 | ±2 pp | 2,602 | IVR | 4 |
| H+K Strategies | May 29, 2018 | HTML | 19 | 37 | 39 | 6 | | ±2.5 pp | 1,500 | Online | 2 |
| EKOS | May 29, 2018 | PDF | 19.1 | 37.9 | 38.4 | 3.3 | 1.3 | ±3.2 pp | 945 | IVR | 0.5 |
| Angus Reid | May 29, 2018 | PDF | 17 | 37 | 39 | 5 | 2 | ±3.5 pp | 773 | Online | 2 |
| Innovative Research | May 29, 2018 | PDF | 22 | 34 | 36 | 6 | 2 | N/A | 958 | Online | 2 |
| Innovative Research | May 29, 2018 | PDF | 21 | 34 | 37 | 6 | 1 | ±4.0 pp | 611 | Telephone | 3 |
| Pollara | May 28, 2018 | PDF | 17 | 32 | 43 | 5 | 2 | ±3.5 pp | 800 | Online | 11 |
| Media consortium leaders' debate in Toronto (May 27, 2018) ||||||||||||
| Mainstreet Research | May 27, 2018 | HTML | 16.0 | 37.9 | 39.3 | 4.5 | 2.4 | ±2.39 pp | 1,682 | IVR | 1.4 |
| Ipsos | May 27, 2018 | HTML Archived May 29, 2018, at the Wayback Machine | 22 | 37 | 34 | | 7* | ±3.2 pp | 1,241 | Online/telephone | 3 |
| Abacus Data | May 26, 2018 | HTML Archived July 12, 2019, at the Wayback Machine | 23 | 33 | 37 | 4 | 2 | ±3.5 pp | 800 | Online | 4 |
| EKOS | May 24, 2018 | PDF | 20.4 | 34.9 | 35.6 | 7.0 | 2.1 | ±3.1 pp | 1,021 | IVR | 0.7 |
| Forum Research | May 23, 2018 | PDF | 14 | 33 | 47 | 4 | 2 | ±3 pp | 906 | IVR | 14 |
| Innovative Research | May 23, 2018 | PDF | 26 | 36 | 31 | 6 | 1 | N/A | 1,074 | Online | 5 |
| Pollara | May 22, 2018 | HTML | 18 | 37 | 38 | 5 | 2 | ±3.3 pp | 870 | Online | 1 |
| Leger | May 22, 2018 | PDF | 21 | 37 | 37 | | 5* | ±3.09 pp | 1,008 | Online | 0 |
| Ipsos | May 21, 2018 | HTML Archived May 23, 2018, at the Wayback Machine | 23 | 36 | 37 | | 4* | ±3.5 pp | 1,000 | Online | 1 |
| Abacus Data | May 18, 2018 | HTML Archived August 4, 2018, at the Wayback Machine | 24 | 35 | 34 | 5 | 2 | ±1.9 pp | 2,824 | Online | 1 |
| Mainstreet Research | May 18, 2018 | HTML | 22.3 | 41.9 | 29.3 | 5.0 | 1.4 | ±2.02 pp | 2,350 | IVR | 12.6 |
| EKOS | May 17, 2018 | PDF | 23.3 | 39.1 | 29.8 | 5.4 | 2.3 | ±2.9 pp | 1,124 | IVR | 9.3 |
| H+K Strategies | May 15, 2018 | HTML | 23 | 38 | 32 | | 7* | ±2.5 pp | 1,500 | Online | 6 |
| Ipsos | May 14, 2018 | HTML Archived May 16, 2018, at the Wayback Machine | 22 | 40 | 35 | | 3* | ±3.5 pp | 1,000 | Online | 5 |
| Innovative Research | May 12, 2018 | PDF | 27 | 35 | 31 | 6 | 1 | N/A | 1,529 | Online | 4 |
| Leaders' debate in Parry Sound (May 11, 2018) ||||||||||||
| Mainstreet Research | May 11, 2018 | HTML | 22.1 | 42.3 | 28.4 | 5.4 | 1.8 | ±1.95 pp | 2,534 | IVR | 13.9 |
| Forum Research | May 9, 2018 | PDF | 22 | 40 | 33 | 4 | 2 | ±4 pp | 777 | IVR | 7 |
| Innovative Research | May 9, 2018 | PDF Archived May 16, 2018, at the Wayback Machine | 28 | 38 | 28 | 6 | 1 | N/A | 915 | Online | 10 |
| City Toronto leaders' debate (May 7, 2018) ||||||||||||
$^*$Includes support for the Green Party

#### Best Premier and Party Leader Approval Ratings

| Date | Firm | Best Premier ratings | Best Premier ratings | Best Premier ratings | Approval ratings | Approval ratings | Approval ratings | Approval ratings | Approval ratings | Approval ratings |
| Date | Firm | Best Premier ratings | Best Premier ratings | Best Premier ratings | Ford | Ford | Horwath | Horwath | Wynne | Wynne |
| Date | Firm | Ford | Horwath | Wynne | Approve | Disapprove | Approve | Disapprove | Approve | Disapprove |
| June 6, 2018 | Research Co. | | | | 36% | 55% | 54% | 34% | 29% | 64% |
| June 2, 2018 | Forum Research | 27% | 31% | 17% | 27% | 55% | 41% | 34% | 23% | 65% |
| June 2, 2018 | Abacus Data | | | | 25% | 48% | 42% | 20% | 21% | 56% |
| May 31, 2018 | Research Co. | 23% | 28% | 15% | 33% | 56% | 52% | 34% | 27% | 64% |
| May 29, 2018 | Forum Research | 29% | 30% | 16% | 30% | 53% | 40% | 32% | 23% | 65% |
| May 29, 2018 | Angus Reid | 25% | 34% | 15% | | | | | | |
| May 29, 2018 | Innovative Research | 23% | 30% | 14% | 30% | 54% | 48% | 23% | 25% | 59% |
| May 26, 2018 | Abacus Data | | | | 27% | 45% | 44% | 15% | 19% | 60% |
| May 23, 2018 | Forum Research | 30% | 33% | 15% | 32% | 51% | 43% | 26% | 19% | 69% |
| May 23, 2018 | Innovative Research | 24% | 26% | 19% | 27% | 57% | 46% | 20% | 24% | 61% |
| May 22, 2018 | Leger | 23% | 28% | 12% | | | | | | |
| May 18, 2018 | Abacus Data | | | | 26% | 46% | 42% | 13% | 17% | 60% |
| May 12, 2018 | Innovative Research | 24% | 26% | 16% | 31% | 52% | 44% | 17% | 21% | 62% |
| May 9, 2018 | Forum Research | | | | 34% | 49% | 42% | 25% | 20% | 71% |

#### Major Regional Polls – Toronto

| Polling firm | Last date of polling | Link | Lib | PC | NDP | Gre | Oth | Margin of error | Sample size | Polling method | Lead |
| Campaign Research | May 16, 2018 | HTML Archived May 21, 2018, at the Wayback Machine | 27 | 35 | 32 | 5 | 2 | ±2.3 pp | 1,871 | Online | 3 |
| Leaders' debate in Parry Sound (May 11, 2018) ||||||||||||
| Mainstreet Research | May 7, 2018 | PDF | 31.1 | 36.6 | 23.1 | 5.9 | 3.4 | ±2.19 pp | 2,000 | IVR | 5.5 |
| CityTV Toronto leaders' debate (May 7, 2018) ||||||||||||

### Pre-campaign period

| Polling organisation | Last date of polling | Source | Lib | PC | NDP | Gr | Oth | Polling type | Sample size | Margin of error |
| Ipsos | May 7, 2018 | HTML | 26 | 40 | 29 | – | 5 | Online/telephone | 1,197 | ±3.2% |
| EKOS Research | May 6, 2018 | Twitter | 24.4 | 41.1 | 25.6 | 6.5 | 2 | IVR | 2,018 | ±2.2% |
| Abacus Data | May 6, 2018 | HTML Archived May 8, 2018, at the Wayback Machine | 29 | 35 | 29 | 5 | 2 | Online | 1,755 | ±2.4% |
| Nanos Research | May 6, 2018 | PDF | 28.5 | 41.1 | 24.3 | 5.9 | | Telephone | 500 | ±4.4% |
| Pollara | May 4, 2018 | HTML | 23 | 40 | 30 | 6 | 1 | Online | 1,010 | ±3.1% |
| Leger | April 23, 2018 | HTML | 26 | 43 | 26 | – | | Online | 1,000+ | |
| Nanos Research | April 22, 2018 | PDF | 30.6 | 42.2 | 21.4 | 5.3 | | Telephone | 2,098 | ±2.1% |
| Forum Research | April 18, 2018 | PDF | 21 | 46 | 27 | 4 | 2 | IVR | 1,126 | ±3% |
| Mainstreet Research | April 18, 2018 | HTML | 28.2 | 44.9 | 21.3 | 4.0 | 1.6 | IVR | 1,763 | ±2.33% |
| Ipsos | April 9, 2018 | HTML | 27 | 40 | 28 | – | 5 | Online | 800 | ±4.0% |
| Innovative Research | April 9, 2018 | HTML | 29.9 | 42.5 | 20.7 | 6.9 | 1.1 | Online | 600 | ±4.0% |
| Abacus Data | April 8, 2018 | HTML Archived April 13, 2018, at the Wayback Machine | 28 | 40 | 24 | 6 | 2 | Online | 4,177 | ±1.5% |
| EKOS Research | April 5, 2018 | PDF | 29.3 | 43.0 | 20.7 | 5.2 | 1.8 | IVR | 1,067 | ±3.0% |
| Mainstreet Research | April 4, 2018 | HTML | 23.9 | 50.3 | 18.3 | 5.2 | 2.4 | IVR | 1,969 | ±2.21% |
| Forum Research | March 29, 2018 | PDF | 29 | 36 | 26 | 7 | 2 | IVR | 728 | ±4% |
| Innovative Research | March 20, 2018 | PDF | 26 | 44 | 22 | 7 | 1 | Telephone | 603 | ±4.0% |
| Mainstreet Research | March 18, 2018 | HTML | 26.2 | 47.0 | 18.6 | 6.4 | 1.8 | IVR | 2,003 | ±2.23% |
| Campaign Research | March 14, 2018 | HTML | 27 | 43 | 23 | 5 | 1 | Online | 1,637 | ±2.4% |
| Leger | March 14, 2018 | PDF | 26 | 42 | 24 | – | 8 | Online | 1,008 | ±3.087% |
| Ipsos | March 14, 2018 | HTML | 32 | 39 | 25 | – | 3 | Online | 803 | ±4.0% |
| Forum Research | March 11, 2018 | PDF | 23 | 44 | 27 | 5 | 2 | IVR | 923 | ±3% |
| 10 March 2018 | Doug Ford is elected leader of the Progressive Conservative Party | Doug Ford is elected leader of the Progressive Conservative Party | Doug Ford is elected leader of the Progressive Conservative Party | Doug Ford is elected leader of the Progressive Conservative Party | Doug Ford is elected leader of the Progressive Conservative Party | Doug Ford is elected leader of the Progressive Conservative Party | Doug Ford is elected leader of the Progressive Conservative Party | Doug Ford is elected leader of the Progressive Conservative Party | Doug Ford is elected leader of the Progressive Conservative Party | Doug Ford is elected leader of the Progressive Conservative Party |
| Angus Reid | March 7, 2018 | PDF | 24 | 50 | 22 | – | 4 | Online | 807 | ±3.4% |
| DART | February 27, 2018 | PDF | 19 | 44 | 24 | – | 13 | Online | 962 | ±3.6% |
| Nanos Research | February 26, 2018 | PDF | 30.5 | 43.5 | 23.2 | 2.8 | | Telephone | 502 | ±4.4% |
| Forum Research | February 23, 2018 | PDF | 21 | 46 | 24 | 7 | 2 | IVR | 1,005 | ±3% |
| Ipsos | February 19, 2018 | HTML | 29 | 38 | 26 | – | 7 | Online | 802 | ±4.0% |
| Forum Research | February 17, 2018 | PDF | 24 | 49 | 19 | 7 | 2 | IVR | 949 | ±3% |
| Campaign Research | February 11, 2018 | HTML | 28 | 43 | 20 | 8 | 1 | Online | 1,426 | ±2.5% |
| Leger | January 2018 | HTML | 33 | 36 | 26 | | | Online | 996 | ±3.1% |
| Innovative Research | January 29, 2018 | PDF | 32 | 36 | 21 | 9 | 2 | Online | 1,027 | |
| 26 January 2018 | Vic Fedeli is appointed as interim leader of the Ontario PC Party | Vic Fedeli is appointed as interim leader of the Ontario PC Party | Vic Fedeli is appointed as interim leader of the Ontario PC Party | Vic Fedeli is appointed as interim leader of the Ontario PC Party | Vic Fedeli is appointed as interim leader of the Ontario PC Party | Vic Fedeli is appointed as interim leader of the Ontario PC Party | Vic Fedeli is appointed as interim leader of the Ontario PC Party | Vic Fedeli is appointed as interim leader of the Ontario PC Party | Vic Fedeli is appointed as interim leader of the Ontario PC Party | Vic Fedeli is appointed as interim leader of the Ontario PC Party |
| Forum Research | January 25, 2018 | PDF | 27 | 42 | 23 | 6 | 2 | IVR | 751 | ±4% |
| 25 January 2018 | Patrick Brown resigns as Ontario PC leader | Patrick Brown resigns as Ontario PC leader | Patrick Brown resigns as Ontario PC leader | Patrick Brown resigns as Ontario PC leader | Patrick Brown resigns as Ontario PC leader | Patrick Brown resigns as Ontario PC leader | Patrick Brown resigns as Ontario PC leader | Patrick Brown resigns as Ontario PC leader | Patrick Brown resigns as Ontario PC leader | Patrick Brown resigns as Ontario PC leader |
| Innovative Research | January 17, 2018 | PDF | 35 | 38 | 18 | 8 | 1 | Online | 1,040 | |
| Forum Research | January 13, 2018 | PDF | 24 | 43 | 24 | 7 | 2 | IVR | 1,022 | ±3% |
| Campaign Research | January 11, 2018 | HTML | 34 | 35 | 23 | 6 | 2 | Online | 1,544 | ±2.5% |
| Mainstreet Research | January 6, 2018 | PDF | 32 | 43 | 18 | 7 | | IVR | 2,375 | ±2.01% |
| Nanos Research | December 18, 2017 | PDF | 33.5 | 41.4 | 20.5 | 4.0 | | Telephone | 500 | ±4.4% |
| Ipsos | December 14, 2017 | HTML | 28 | 36 | 28 | – | 9 | Online | 829 | ±4.0% |
| Campaign Research | December 6, 2017 | HTML | 35 | 34 | 22 | 7 | 2 | Online | 1,495 | ±2.5% |
| Forum Research | November 30, 2017 | PDF | 24 | 40 | 26 | 8 | 2 | IVR | 861 | ±3% |
| Innovative Research | November 17, 2017 | PDF | 31 | 41 | 19 | 8 | 1 | Telephone | 607 | ±4.0% |
| Campaign Research | November 9, 2017 | HTML | 32 | 35 | 23 | 9 | 1 | Online | 1,263 | ±2.8% |
| Nanos Research | October 29, 2017 | PDF | 29.2 | 38.3 | 26.0 | 6.4 | | Telephone | 500 | ±4.4% |
| Forum Research | October 25, 2017 | PDF | 24 | 45 | 22 | 7 | 2 | IVR | 946 | ±3% |
| Campaign Research | October 11, 2017 | HTML | 32 | 36 | 25 | 7 | 1 | Online | 1,347 | ±2.7% |
| Forum Research | September 27, 2017 | PDF | 22 | 44 | 27 | 5 | 2 | IVR | 801 | ±3% |
| Innovative Research | September 18, 2017 | PDF | 35 | 40 | 18 | 5 | 1 | Telephone | 608 | ±4.0% |
| Campaign Research | September 11, 2017 | HTML | 33 | 38 | 23 | 6 | 0 | Online | 1,133 | ±2.9% |
| Ipsos | September 11, 2017 | HTML | 32 | 39 | 22 | – | 7 | Online | 800 | ±4.0% |
| Forum Research | August 24, 2017 | PDF | 25 | 40 | 27 | 6 | 2 | IVR | 981 | ±3% |
| Nanos Research | August 17, 2017 | PDF | 31.2 | 42.2 | 19.5 | 6.7 | | Telephone | 500 | ±4.4% |
| Innovative Research | July 19, 2017 | HTML | 36 | 40 | 17 | 6 | 1 | Telephone | 605 | ±4.0% |
| Campaign Research | July 10, 2017 | HTML | 31 | 38 | 23 | 6 | 1 | Online | 943 | ±3% |
| Innovative Research | June 27, 2017 | HTML | 35 | 39 | 20 | 5 | 1 | Telephone | 600 | ±4.0% |
| Forum Research | June 14, 2017 | PDF | 23 | 44 | 24 | 7 | 2 | IVR | 1,003 | ±3% |
| Campaign Research | June 12, 2017 | HTML | 30 | 38 | 24 | 7 | 1 | Online | 1,118 | ±3% |
| Mainstreet Research | May 25, 2017 | HTML | 29 | 43 | 24 | 5 | – | IVR | 2,000 | ±2.19% |
| Campaign Research | May 13, 2017 | HTML | 37 | 34 | 22 | 6 | 1 | Online | 864 | ±4% |
| Forum Research | May 10, 2017 | PDF | 28 | 41 | 23 | 6 | 3 | IVR | 1,103 | ±3% |
| Campaign Research | April 11, 2017 | HTML | 31 | 36 | 25 | | | Online | 979 | ±3% |
| Innovative Research | April 5, 2017 | PDF | 29 | 40 | 23 | 6 | 2 | Online | 779 | |
| Forum Research | March 30, 2017 | PDF | 19 | 43 | 28 | 8 | 2 | IVR | 884 | ±3.3% |
| Mainstreet Research | March 12, 2017 | HTML | 30 | 40 | 24 | 6 | – | IVR | 2,531 | ±1.95% |
| Forum Research | February 16, 2017 | PDF | 24 | 44 | 25 | 6 | 2 | IVR | 1,120 | ±3% |
| Mainstreet Research | February 12, 2017 | HTML | 29 | 39 | 27 | 4 | – | IVR | 2,524 | ±1.95% |
| Campaign Research | January 29, 2017 | HTML | 28 | 50 | 15 | 5 | 2 | IVR | 676 | ±4% |
| Forum Research | November 21, 2016 | PDF | 24 | 43 | 24 | 8 | 2 | IVR | 1,184 | ±3% |
| Nanos Research | November 19, 2016 | PDF | 31.9 | 39.9 | 22.2 | 5.2 | 0.8 | Telephone | 500 | ±4.4% |
| Mainstreet Research | November 2, 2016 | HTML | 25 | 43 | 27 | 6 | – | IVR | 2,524 | ±1.95% |
| Forum Research | October 18, 2016 | PDF | 24 | 43 | 23 | 8 | 2 | IVR | 1,124 | ±3% |
| Innovative Research | September 24, 2016 | PDF | 33 | 38 | 20 | 8 | – | Telephone | 600 | ±4.0% |
| Ipsos | September 22, 2016 | HTML | 40 | 35 | 20 | 5 | – | Online | 800 | ±4% |
| Mainstreet Research | September 18, 2016 | HTML | 28 | 43 | 23 | 6 | – | IVR | 2,562 | ±1.94% |
| Forum Research | September 13, 2016 | PDF | 25 | 45 | 23 | 6 | 2 | IVR | 1,154 | ±3% |
| Ipsos | September 9, 2016 | HTML | 35 | 37 | 23 | 5 | – | Online | 800 | ±4% |
| 8 September 2016 | Premier Kathleen Wynne prorogues the legislature | Premier Kathleen Wynne prorogues the legislature | Premier Kathleen Wynne prorogues the legislature | Premier Kathleen Wynne prorogues the legislature | Premier Kathleen Wynne prorogues the legislature | Premier Kathleen Wynne prorogues the legislature | Premier Kathleen Wynne prorogues the legislature | Premier Kathleen Wynne prorogues the legislature | Premier Kathleen Wynne prorogues the legislature | Premier Kathleen Wynne prorogues the legislature |
| Forum Research | August 15, 2016 | PDF | 28 | 41 | 23 | 6 | 2 | IVR | 1,097 | ±3% |
| Forum Research | July 12, 2016 | PDF | 35 | 42 | 17 | 5 | 2 | IVR | 1,183 | ±3% |
| Forum Research | June 21, 2016 | PDF | 30 | 40 | 21 | 8 | 2 | IVR | 1,173 | ±3% |
| Forum Research | May 31, 2016 | PDF | 30 | 40 | 21 | 7 | 2 | IVR | 1,172 | ±3% |
| Mainstreet Research | May 18, 2016 | HTML | 36 | 38 | 20 | 5 | – | IVR | 2,537 | ±1.95% |
| Forum Research | April 25, 2016 | PDF | 34 | 39 | 21 | 5 | 2 | IVR | 1,157 | ±3% |
| Forum Research | March 23, 2016 | PDF | 30 | 40 | 24 | 5 | 2 | IVR | 1,225 | ±3% |
| Forum Research | February 29, 2016 | PDF | 27 | 44 | 22 | 6 | 2 | IVR | 1,148 | ±3% |
| Mainstreet Research | February 16, 2016 | HTML | 33 | 36 | 26 | 5 | – | IVR | 2,623 | ±1.91% |
| Forum Research | December 20, 2015 | PDF | 31 | 34 | 26 | 7 | 2 | IVR | 1,003 | ±3% |
| Ipsos | November 9, 2015 | HTML | 44 | 31 | 20 | 4 | – | Online | 1,002 | ±3.5% |
| Forum Research | November 4, 2015 | PDF | 30 | 36 | 26 | 6 | 1 | IVR | 1,158 | ±3% |
| Mainstreet Research | November 1, 2015 | HTML | 28 | 40 | 25 | 7 | – | IVR | 2,506 | ±1.96% |
| Mainstreet Research | September 21, 2015 | HTML | 30 | 40 | 24 | 7 | – | IVR | 4,610 | ±1.5% |
| Forum Research | August 13, 2015 | PDF | 26 | 35 | 33 | 4 | 2 | IVR | 1,001 | ±3% |
| Forum Research | July 5, 2015 | PDF | 26 | 32 | 35 | 5 | 2 | IVR | 678 | ±4% |
| Ipsos | May 20, 2015 | HTML | 34.13 | 32.37 | 25.19 | 8.31 | – | Online | 1,002 | ±3.5% |
| Innovative Research | May 19, 2015 | PDF | 34 | 35 | 24 | 6 | – | Telephone | 606 | ±4.0% |
| Forum Research | May 11, 2015 | PDF | 24 | 33 | 36 | 5 | 2 | IVR | 1,001 | ±3% |
| 9 May 2015 | Patrick Brown is elected leader of the Ontario PC Party | Patrick Brown is elected leader of the Ontario PC Party | Patrick Brown is elected leader of the Ontario PC Party | Patrick Brown is elected leader of the Ontario PC Party | Patrick Brown is elected leader of the Ontario PC Party | Patrick Brown is elected leader of the Ontario PC Party | Patrick Brown is elected leader of the Ontario PC Party | Patrick Brown is elected leader of the Ontario PC Party | Patrick Brown is elected leader of the Ontario PC Party | Patrick Brown is elected leader of the Ontario PC Party |
| Forum Research | April 30, 2015 | PDF | 29 | 36 | 24 | 9 | 2 | IVR | 912 | ±3% |
| Innovative Research | April 26, 2015 | PDF | 40 | 33 | 18 | 8 | 1 | Online | 1,017 | |
| Forum Research | March 26, 2015 | PDF | 29 | 34 | 27 | 8 | 2 | IVR | 881 | ±3% |
| Environics | March 25, 2015 | HTML | 32 | 33 | 27 | 7 | – | Telephone | 989 | ±3.1% |
| Forum Research | February 27, 2015 | PDF | 32 | 39 | 21 | 6 | 2 | IVR | 996 | ±3% |
| Forum Research | January 30, 2015 | PDF | 37 | 36 | 19 | 6 | 2 | IVR | 1,028 | ±3% |
| Forum Research | December 20, 2014 | PDF | 35 | 36 | 20 | 7 | 2 | IVR | 1,058 | ±3% |
| Forum Research | November 29, 2014 | PDF | 37 | 37 | 17 | 7 | 2 | IVR | 1,054 | ±3% |
| Forum Research | November 1, 2014 | PDF | 40 | 35 | 19 | 4 | 2 | IVR | 1,104 | ±3% |
| Forum Research | October 1, 2014 | PDF | 36 | 34 | 23 | 6 | 1 | IVR | 1,079 | ±3% |
| Forum Research | August 21, 2014 | PDF | 39 | 32 | 19 | 8 | 2 | IVR | 1,229 | ±3% |
| 2 July 2014 | Jim Wilson becomes interim leader of the Ontario PC Party | Jim Wilson becomes interim leader of the Ontario PC Party | Jim Wilson becomes interim leader of the Ontario PC Party | Jim Wilson becomes interim leader of the Ontario PC Party | Jim Wilson becomes interim leader of the Ontario PC Party | Jim Wilson becomes interim leader of the Ontario PC Party | Jim Wilson becomes interim leader of the Ontario PC Party | Jim Wilson becomes interim leader of the Ontario PC Party | Jim Wilson becomes interim leader of the Ontario PC Party | Jim Wilson becomes interim leader of the Ontario PC Party |
| 2 July 2014 | Tim Hudak resigns as leader of the Ontario PC Party | Tim Hudak resigns as leader of the Ontario PC Party | Tim Hudak resigns as leader of the Ontario PC Party | Tim Hudak resigns as leader of the Ontario PC Party | Tim Hudak resigns as leader of the Ontario PC Party | Tim Hudak resigns as leader of the Ontario PC Party | Tim Hudak resigns as leader of the Ontario PC Party | Tim Hudak resigns as leader of the Ontario PC Party | Tim Hudak resigns as leader of the Ontario PC Party | Tim Hudak resigns as leader of the Ontario PC Party |
| 2014 election | June 12, 2014 | HTML | 38.65 | 31.25 | 23.75 | 4.84 | 1.51 |