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Recent electoral history | Markham—Unionville


2018 2022 2025 Projection PC 62% ± 10% 62.4% 55.9% 61.2% OLP 31% ± 9% 18.0% 30.1% 30.9% NDP 3% ± 2% 16.6% 7.2% 4.0% GPO 2% ± 2% 2.1% 3.6% 2.4% NBPO 2% ± 2% 0.0% 1.5% 1.7%

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338Canada Markham—Unionville projection

Latest update: March 20, 2026

Markham—Unionville 52% 72% 62% ± 10% PC 22% 41% 31% ± 9% OLP PC 2025 61.16% 338Canada Popular vote projection | March 20, 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—Unionville >99% PC <1% OLP <1% NDP Odds of winning | March 20, 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—Unionville

Odds of winning | Markham—Unionville