Riding profile

Markham—Stouffville

Provincial riding — ON · Suburban · on 905

The question

Markham—Stouffville: who wins this toss-up?

Current forecast

PC

Toss-up

Probability
100%
Mean margin (pts)
3.9
P(close race)
76%

Projected vote share

Projection by party

  • PC 48.5%
  • OLP 44.6%
  • NDP 4.7%
  • OTH 1.6%
  • GP 0.6%

Watch list

The tightest races

Smallest projected margin. Open one for the numbers.

  1. Hamilton MountainOLP53 %1.3 pt margin
  2. Mississauga CentrePC59 %1.3 pt margin
  3. Newmarket—AuroraPC65 %1.4 pt margin

In context

How this riding stacks up

PC OLP NDP OTH
HereMarkham—Stouffville 48.5%44.6%4.7%1.6%
Provincial averageOntario 41.4% +7.0 32.3% +12.4 19.5% −14.9 4.0% −2.4

Provincial averages computed across the 124 riding-level projections (unweighted mean).

Projection track

How the projection has moved

Editorial read

Markham—Stouffville, a suburban riding in Ontario, elected a member with the PC Party in the previous cycle, with a 9-point margin. The Vote-Scope model projects the PC Party ahead at 48% vote share, against 45% for the Ontario Liberals, and the race could swing.

Sitting member

Hon. Paul Calandra

Sits with PC

Parliament
44th

Previous election · 2025

Won by
PC
Margin
9.2 pts
Turnout
43.4%
Margin shift vs current projection
-5.3 pts

Detailed result · ON 2025

Candidates and votes

Candidate Party Votes % Occupation
PAUL CALANDRA Elected PC 22,757 50.6
KELLY DUNN OLP 18,624 41.4
GREGORY HINES NDP 2,051 4.6
MYLES O'BRIEN GP 1,018 2.3
BRENDAN SORENSON OTH 491 1.1
Last model run
Cycle
on_2029