Markham--Stouffville

Markham--Stouffville is a suburban riding in York Region, northeast of Toronto, combining the eastern portion of the City of Markham with the Town of Whitchurch-Stouffville. The riding sits within the Greater Toronto Area's outer suburban ring, with a landscape that transitions from dense residential subdivisions in Markham to the small-town character and agricultural fringe of Stouffville. Created in the 2012 redistribution, the riding has a population of approximately 110,000 and is one of the most ethnically diverse constituencies in Canada, with immigrants comprising more than 42 percent of residents. Cantonese, Mandarin, and Tamil are the most commonly spoken non-official languages.

Candidates

Helena Jaczek (Liberal) is the incumbent, first elected federally in 2019. Born in England to a Polish father and English mother, Jaczek emigrated to Canada in 1963 at age 12. She earned a medical degree and a Master of Health Sciences from the University of Toronto and practised as a physician, including at Women's College Hospital, before entering public health administration in York Region. Her political career began in 2007 when she was elected to the Ontario legislature representing Oak Ridges--Markham, serving as Minister of Community and Social Services and briefly as Minister of Health and Long-Term Care under Premier Kathleen Wynne. Federally, she served as Minister of Public Services and Procurement. Although she had announced retirement plans in 2023, Jaczek returned to the race after Justin Trudeau stepped aside as Liberal leader.

Niran Jeyanesan (Conservative) is a police officer with more than a decade of service, during which he focused on community policing and building public trust. Active in his community, Jeyanesan has mentored at-risk youth, led youth initiatives through his church, and worked on community revitalization projects.

Serena Cheung (NDP) stood as the NDP candidate in the riding.

Myles O'Brien (Green Party) ran on a platform emphasizing environmental protection and sustainable suburban development.

Rene de Vries (People's Party) campaigned on reducing immigration and government spending.

Shahzad Ahmed (Centrist) also stood as a candidate.

About the Riding

Markham--Stouffville's economy is shaped by its position in the GTA's northeastern suburban corridor. Markham has emerged as one of Canada's leading technology hubs, with clusters of IT firms, semiconductor companies, and corporate offices along the Highway 404 and Highway 7 corridors. Stouffville's economy blends commuter-residential development with remnants of its agricultural heritage, and the town has grown rapidly as families seek relatively more affordable housing within commuting distance of Toronto.

Immigration policy carries particular resonance in a riding where nearly half the population was born outside Canada. Settlement services, credential recognition for internationally trained professionals, and culturally responsive health care were significant campaign themes. The riding's large Chinese and South Asian communities are politically engaged, and shifts in their voting patterns have decided recent elections.

In 2025, housing affordability was the dominant concern. Home prices in Markham and Stouffville, while somewhat below Toronto core levels, climbed well beyond the reach of many young families. Traffic congestion along Highway 404 and the commute to Toronto remained persistent frustrations, and residents pushed for improved GO Transit service and the extension of rapid transit infrastructure into York Region. US trade tensions added background anxiety, particularly for the riding's technology sector and its cross-border supply chains.