Electionpedia.comHelena Jaczek (Liberal Party of Canada) won Markham—Stouffville in the 2025 Canadian federal election by 3,760 votes over Niran Jeyanesan (Conservative Party of Canada).
Helena Jaczek received 31,658 votes (51.4%). Niran Jeyanesan received 27,898 votes (45.3%).
| Place | Candidate | Party | Residence | Occupation | Votes | Share |
|---|---|---|---|---|---|---|
| 1 | Helena JaczekElectedSource incumbent marker | Liberal Party of Canada | Markham, Ont. | Parliamentarian/Parlementaire | 31,658 | 51.4% |
| 2 | Niran Jeyanesan | Conservative Party of Canada | Blackstock, Ont. | Police Officer/Policier | 27,898 | 45.3% |
| 3 | Serena Cheung | New Democratic Party | Ottawa, Ont. | Environmental Consultant/Experte-conseil en environnement | 1,121 | 1.8% |
| 4 | Myles O'Brien | Green Party of Canada | Stouffville, Ont. | Sustainability Coordinator/Coordinateur en développement durable | 433 | 0.7% |
| 5 | René de Vries | People's Party of Canada | Stouffville, Ont. | Environmental Geoscientist/Géoscientifique en environnement | 393 | 0.6% |
| 6 | Shahzad Ahmed | Centrist Party of Canada | Markham, Ont. | Banker/Banquier | 141 | 0.2% |
These are official results for the 28 April 2025 general election. They are historical election records, not a claim about the current House membership or future candidacies.
Candidate policies, biographies, political finance, current tenure, and future candidacy remain separate sourced layers. Electionpedia does not manufacture them from a vote result.
Markham—Stouffville Election Result 2025: Helena Jaczek Won
An election result is a dated publication about a defined contest and reporting area. Certification status, ballot accounting and the voting system determine what the numbers can support.
A preliminary publication, an election-night update and a final certified result describe different stages. Electionpedia retains the source’s status rather than treating every displayed number as final. For historical research, the source version remains important because later corrections can change a total without changing the identity of the election.
A vote share needs a denominator: candidate votes, valid votes, ballots cast or another published base. Turnout can use a different base again. Compare the labels before comparing percentages. A margin in votes and a margin in percentage points answer related but different questions.
Read the full election results guide →