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Recent electoral history | Markham—Stouffville


2018 2022 2025 Projection OLP 47% ± 10% 26.0% 35.5% 41.4% PC 45% ± 10% 48.1% 48.4% 50.6% NDP 5% ± 3% 20.4% 9.5% 4.6% GPO 2% ± 2% 4.0% 3.9% 2.3% NBPO 1% ± 1% 0.0% 1.5% 1.1%

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338Canada Markham—Stouffville projection

Latest update: April 29, 2026

Markham—Stouffville 38% 57% 47% ± 10% OLP 35% 54% 45% ± 10% PC 2% 7% 5% ± 3% NDP PC 2025 50.64% 338Canada Popular vote projection | April 29, 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—Stouffville 66%▲ OLP 34%▼ PC <1% NDP Odds of winning | April 29, 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—Stouffville

Odds of winning | Markham—Stouffville