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Recent electoral history | Markham—Thornhill


2018 2022 2025 Projection PC 55% ± 11% 50.5% 48.8% 53.6% OLP 38% ± 11% 24.4% 37.5% 39.7% NDP 4% ± 3% 21.3% 9.0% 4.4% GPO 2% ± 2% 2.3% 2.6% 2.3%

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338Canada Markham—Thornhill projection

Latest update: February 18, 2026

Markham—Thornhill 45% 66% 55% ± 11% PC 28% 49% 38% ± 11% OLP 1% 8% 4% ± 3% NDP PC 2025 53.59% 338Canada Popular vote projection | February 18, 2026
Methodology note. This projection is calculated using a mostly-proportional swing model adjusted with provincial and regional polls conducted by professional pollsters. This is not a poll, but a projection based on polls. Read more on 338Canada's methodology here.
50% 100% Markham—Thornhill 99% PC 1% OLP <1% NDP Odds of winning | February 18, 2026
Methodology note. These odds of winning are those if a general election were held today. They are calculated by the 338Canada Monte Carlo-type program that runs thousands of simulated elections.

338Canada Ontario Projection | Markham—Thornhill

Odds of winning | Markham—Thornhill