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Welcome to 338Canada Ontario!


The 338Canada project is a statistical model of electoral projections based on opinion polls, electoral history, and demographic data. This web site is a creation of Philippe J. Fournier, physics and astrophysics professor at Cégep de Saint-Laurent in Montreal.

Philippe J. Fournier is a political columnist for L'actualité magazine and a contributor to Politico Canada, as well as an occasional panelist for CPAC, CTV Montreal, Noovo, and Radio-Canada. He also co-hosts the podcasts The Numbers and Les chiffres with Éric Grenier.

Please subscribe to the 338Canada newsletter here, and enjoy the website!


338Canada Projection | Ontario


Latest update: June 27, 2025

Popular vote projection 43% ± 4% PCPO 30% ± 4% OLP 18% ± 2% NDP 5% ± 1% GPO 338Canada Popular vote projection | June 27, 2025
This projection is calculated using a weighted average of polls by the 338Canada model to estimate current party support. This is not a poll, but the result of an aggregation of polls and modelization of various data. Read more on 338Canada's methodology here.
338Canada seat projection | 63 seats for a majority 82 [65-90] PCPO 25 [20-29] NDP 14 [9-29] OLP 2 [2-3] GPO 1 [1-1] IND 338Canada Ontario | June 27, 2025
The seat projections are a forecast of the most likely results if a general election were held today. The brackets indicate the current ranges from worst to best possible outcomes. The distributions follow Gaussian-like curves, so the extremes are not as likely as the values near the mean. Does it work? See 338Canada's full record here.

50% 100% 338Canada Odds of winning the most seats >99% PCPO <1% OLP <1% NDP Odds of winning | June 27, 2025
The odds of winning and of outcome are those if a general election were held today. They are calculated by the 338Canada Monte Carlo-type program that runs thousands of general election simulations, using vote projections per riding, past results, and various demographic data as the main variables.
50% 100% Odds of outcome 94%▼ PCPO maj. 6%▲ PCPO min. <1% OLP min. <1% NDP min. Odds of outcome | June 27, 2025

[▲▼: movement since previous update]

338Canada Ontario | Popular Vote Projection

OLP 30% ± 4% PCPO 43% ± 4% NDP 18% ± 2% GPO 5% ± 1% Popular vote projection % 50 45 40 35 30 25 20 15 10 5 2025-02-01 2025-03-01 2025-04-01 2025-05-01 2025-06-01 2025-07-01 2025-08-01 2025-09-01 2025-10-01 2025-11-01 2025-12-01 Election 2025 June 27, 2025 2025-01-27 PCPO 42% OLP 26% NDP 21% GPO 7% 2025-01-27 2025-01-29 PCPO 42% OLP 26% NDP 21% GPO 7% 2025-01-29 2025-01-31 PCPO 45% OLP 26% NDP 21% GPO 6% 2025-01-31 2025-02-02 PCPO 45% OLP 25% NDP 21% GPO 6% 2025-02-02 2025-02-03 PCPO 44% OLP 26% NDP 21% GPO 6% 2025-02-03 2025-02-04 PCPO 45% OLP 27% NDP 19% GPO 6% 2025-02-04 2025-02-05 PCPO 45% OLP 27% NDP 19% GPO 6% 2025-02-05 2025-02-06 PCPO 46% OLP 26% NDP 19% GPO 6% 2025-02-06 2025-02-07 PCPO 46% OLP 26% NDP 19% GPO 6% 2025-02-07 2025-02-08 PCPO 45% OLP 27% NDP 20% GPO 6% 2025-02-08 2025-02-09 PCPO 45% OLP 26% NDP 20% GPO 6% 2025-02-09 2025-02-10 PCPO 45% OLP 26% NDP 20% GPO 6% 2025-02-10 2025-02-11 PCPO 45% OLP 27% NDP 19% GPO 6% 2025-02-11 2025-02-12 PCPO 45% OLP 27% NDP 18% GPO 6% 2025-02-12 2025-02-13 PCPO 45% OLP 27% NDP 18% GPO 6% 2025-02-13 2025-02-14 PCPO 45% OLP 28% NDP 18% GPO 6% 2025-02-14 2025-02-15 PCPO 45% OLP 27% NDP 18% GPO 6% 2025-02-15 2025-02-16 PCPO 45% OLP 27% NDP 18% GPO 6% 2025-02-16 2025-02-17 PCPO 44% OLP 28% NDP 19% GPO 7% 2025-02-17 2025-02-18 PCPO 44% OLP 28% NDP 18% GPO 7% 2025-02-18 2025-02-19 PCPO 45% OLP 28% NDP 18% GPO 6% 2025-02-19 2025-02-20 PCPO 45% OLP 28% NDP 18% GPO 6% 2025-02-20 2025-02-21 PCPO 45% OLP 28% NDP 18% GPO 6% 2025-02-21 2025-02-22 PCPO 45% OLP 27% NDP 19% GPO 6% 2025-02-22 2025-02-23 PCPO 45% OLP 27% NDP 19% GPO 6% 2025-02-23 2025-02-24 PCPO 45% OLP 27% NDP 19% GPO 6% 2025-02-24 2025-02-25 PCPO 45% OLP 28% NDP 19% GPO 6% 2025-02-25 2025-02-26 PCPO 45% OLP 27% NDP 18% GPO 6% 2025-02-26 2025-02-27 PCPO 46% OLP 28% NDP 18% GPO 6% 2025-02-27 2025-02-28 PCPO 43% OLP 30% NDP 19% GPO 5% 2025-02-28 2025-06-07 PCPO 43% OLP 30% NDP 18% GPO 5% 2025-06-07 2025-06-27 PCPO 43% OLP 30% NDP 18% GPO 5% 2025-06-27

338Canada Ontario | Seat Projection

OLP 14 [9-29] PCPO 82 [65-90] NDP 25 [20-29] GPO 2 [2-3] IND 1 [1-1] Seat projection 100 80 60 40 20 2025-02-01 2025-03-01 2025-04-01 2025-05-01 2025-06-01 2025-07-01 2025-08-01 2025-09-01 2025-10-01 2025-11-01 2025-12-01 Election 2025 Majority: 63 seats June 27, 2025 2025-01-27 PCPO 88 NDP 20 OLP 13 GPO 2 2025-01-27 2025-01-29 PCPO 91 NDP 18 OLP 12 GPO 2 2025-01-29 2025-01-31 PCPO 99 NDP 14 OLP 8 GPO 2 2025-01-31 2025-02-02 PCPO 98 NDP 15 OLP 8 GPO 2 2025-02-02 2025-02-03 PCPO 97 NDP 16 OLP 8 GPO 2 2025-02-03 2025-02-04 PCPO 99 NDP 13 OLP 9 GPO 2 2025-02-04 2025-02-05 PCPO 99 NDP 13 OLP 9 GPO 2 2025-02-05 2025-02-06 PCPO 101 NDP 12 OLP 8 GPO 2 2025-02-06 2025-02-07 PCPO 100 NDP 13 OLP 8 GPO 2 2025-02-07 2025-02-08 PCPO 99 NDP 13 OLP 9 GPO 2 2025-02-08 2025-02-09 PCPO 100 NDP 13 OLP 8 GPO 2 2025-02-09 2025-02-10 PCPO 100 NDP 13 OLP 8 GPO 2 2025-02-10 2025-02-11 PCPO 99 NDP 13 OLP 9 GPO 2 2025-02-11 2025-02-12 PCPO 99 OLP 11 NDP 11 GPO 2 2025-02-12 2025-02-13 PCPO 98 OLP 12 NDP 11 GPO 2 2025-02-13 2025-02-14 PCPO 92 NDP 15 OLP 14 GPO 2 2025-02-14 2025-02-15 PCPO 96 NDP 14 OLP 12 GPO 2 2025-02-15 2025-02-16 PCPO 96 NDP 14 OLP 12 GPO 2 2025-02-16 2025-02-17 PCPO 85 OLP 19 NDP 17 GPO 2 2025-02-17 2025-02-18 PCPO 86 OLP 19 NDP 17 GPO 2 2025-02-18 2025-02-19 PCPO 90 OLP 16 NDP 16 GPO 2 2025-02-19 2025-02-20 PCPO 92 NDP 17 OLP 13 GPO 2 2025-02-20 2025-02-21 PCPO 88 NDP 18 OLP 16 GPO 2 2025-02-21 2025-02-22 PCPO 91 NDP 19 OLP 12 GPO 2 2025-02-22 2025-02-23 PCPO 91 NDP 19 OLP 12 GPO 2 2025-02-23 2025-02-24 PCPO 88 NDP 19 OLP 15 GPO 2 2025-02-24 2025-02-25 PCPO 89 NDP 19 OLP 14 GPO 2 2025-02-25 2025-02-26 PCPO 93 OLP 15 NDP 14 GPO 2 2025-02-26 2025-02-27 PCPO 92 NDP 16 OLP 14 GPO 2 2025-02-27 2025-02-28 PCPO 80 NDP 27 OLP 14 GPO 2 2025-02-28 2025-06-07 PCPO 82 NDP 25 OLP 14 GPO 2 2025-06-07 2025-06-27 PCPO 82 NDP 25 OLP 14 GPO 2 2025-06-27

338Canada Ontario | Odds of Winning the Most Seats

OLP <1% PCPO >99% NDP <1% GPO <1% 338Canada Odds of winning the most seats 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 2025-02-01 2025-03-01 2025-04-01 2025-05-01 2025-06-01 2025-07-01 2025-08-01 2025-09-01 2025-10-01 2025-11-01 2025-12-01 Election 2025 OLP PCPO NDP GPO June 27, 2025 2025-01-27 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-01-27 2025-01-29 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-01-29 2025-01-31 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-01-31 2025-02-02 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-02 2025-02-03 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-03 2025-02-04 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-04 2025-02-05 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-05 2025-02-06 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-06 2025-02-07 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-07 2025-02-08 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-08 2025-02-09 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-09 2025-02-10 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-10 2025-02-11 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-11 2025-02-12 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-12 2025-02-13 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-13 2025-02-14 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-14 2025-02-15 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-15 2025-02-16 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-16 2025-02-17 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-17 2025-02-18 PCPO >99% OLP <1% GPO <1% NDP <1% 2025-02-18 2025-02-19 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-19 2025-02-20 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-20 2025-02-21 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-21 2025-02-22 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-22 2025-02-23 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-23 2025-02-24 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-24 2025-02-25 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-25 2025-02-26 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-26 2025-02-27 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-27 2025-02-28 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-02-28 2025-06-07 PCPO >99% GPO <1% NDP <1% OLP <1% 2025-06-07 2025-06-27 PCPO >99% OLP <1% GPO <1% NDP <1% 2025-06-27

338Canada Ontario | Odds of Election Outcome

OLP minority <1% PCPO majority 94% PCPO minority 6% 338Canada Odds of election outcome 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 2025-02-01 2025-03-01 2025-04-01 2025-05-01 2025-06-01 2025-07-01 2025-08-01 2025-09-01 2025-10-01 2025-11-01 2025-12-01 Election 2025 OLP majority OLP minority PCPO majority PCPO minority June 27, 2025 2025-01-27 PCPO majority 99% PCPO minority 1% OLP minority <1% OLP majority <1% 2025-01-27 2025-01-29 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-01-29 2025-01-31 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-01-31 2025-02-02 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-02 2025-02-03 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-03 2025-02-04 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-04 2025-02-05 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-05 2025-02-06 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-06 2025-02-07 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-07 2025-02-08 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-08 2025-02-09 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-09 2025-02-10 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-10 2025-02-11 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-11 2025-02-12 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-12 2025-02-13 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-13 2025-02-14 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-14 2025-02-15 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-15 2025-02-16 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-16 2025-02-17 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-17 2025-02-18 PCPO majority 99% PCPO minority 1% OLP minority <1% OLP majority <1% 2025-02-18 2025-02-19 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-19 2025-02-20 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-20 2025-02-21 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-21 2025-02-22 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-22 2025-02-23 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-23 2025-02-24 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-24 2025-02-25 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-25 2025-02-26 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-26 2025-02-27 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-27 2025-02-28 PCPO majority >99% PCPO minority <1% OLP minority <1% OLP majority <1% 2025-02-28 2025-06-07 PCPO majority 95% PCPO minority 5% OLP minority <1% OLP majority <1% 2025-06-07 2025-06-27 PCPO majority 94% PCPO minority 6% OLP minority <1% OLP majority <1% 2025-06-27