Markham—Thornhill

Markham—Thornhill encompasses the northwestern portion of the City of Markham and a section of the Thornhill community, straddling the Markham–Richmond Hill boundary. The riding centres on the Highway 7 commercial corridor and the residential neighbourhoods south of Highway 407, an area that has become one of the most ethnically diverse constituencies in the country.

Candidates

Mary Ng (Liberal) — Born in Hong Kong, Ng immigrated to Canada with her family in 1976. She graduated from the University of Toronto with a degree in political science and spent two decades in Ontario government roles, including positions in the Cabinet Office, the Ministry of Education, and the president's office at Ryerson University. She served as Director of Public Appointments in the Office of Prime Minister Justin Trudeau before winning a 2017 by-election in the riding, and was appointed Minister of Small Business and Export Promotion in July 2018.

Alex Yuan (Conservative) — Yuan was a businessman and community figure in the Markham area. His family history included connections to the wartime effort to assist Jewish refugees in Shanghai. He campaigned on themes of community safety and fiscal responsibility.

Paul Sahbaz (NDP) — Born to Armenian-Canadian parents who immigrated from Turkey, Sahbaz grew up in the Markham—Thornhill area. He studied politics and governance at Ryerson University and campaigned on issues facing young people, including precarious employment and housing affordability.

Chris Williams (Green Party) — Williams represented the Green Party in the riding, running on the party's platform of environmental sustainability and democratic reform.

Peter Remedios (People's Party) and Josephbai Macwan (Independent) also stood as candidates.

About the Riding

Markham—Thornhill sits at the heart of one of Canada's most prominent technology corridors. The City of Markham is home to over 1,500 technology and life sciences companies, and the Highway 7 strip that runs through the riding functions as a major employment zone for software development, IT services, and corporate offices. IBM Canada's national headquarters and AMD are among the most prominent employers in the broader Markham area.

The riding's commercial landscape includes numerous Chinese and East Asian-oriented shopping centres, restaurants, and cultural institutions, reflecting a population where Chinese Canadians form the largest ethnic group. The Thornhill portion of the riding, an older residential community, provides a counterpoint to the newer condominium and townhouse developments in Markham's western districts.

Transit connectivity was a significant concern in 2019, as residents relied heavily on Highway 404 for commuting to Toronto. International trade and small business support were locally relevant given the incumbent's cabinet portfolio, while immigration policy and family reunification resonated strongly with the riding's large newcomer communities.