Stormont—Dundas—South Glengarry

Stormont—Dundas—South Glengarry hugs the north shore of the St. Lawrence River in Ontario's southeastern corner, stretching from the Quebec border near South Glengarry westward through the city of Cornwall and into the rural townships of North Dundas, South Dundas, and North Stormont. The Ontario portion of the Akwesasne Mohawk Territory, straddling the Canada–United States border where the St. Lawrence meets the St. Regis River, also lies within the riding.

Candidates

Eric Duncan (Conservative) — A Winchester native who was first elected to the North Dundas municipal council at eighteen years of age, then became mayor at twenty-two. He was chosen as warden of the United Counties of Stormont, Dundas and Glengarry at twenty-five, the youngest in the counties' history, and was the first to serve consecutive years in that role. Before seeking the federal nomination, he had spent nine years as executive assistant to retiring MP Guy Lauzon.

Heather Megill (Liberal) — A retired Upper Canada District School Board teacher and former Canadian Armed Forces Reserve officer who served seventeen years with the Stormont, Dundas and Glengarry Highlanders. Megill had previously run as the Liberal candidate in the 2018 Ontario provincial election in the same region.

Kelsey Catherine Schmitz (NDP) — A Cornwall-area educator raised in the South Stormont communities of Newington and Ingleside. Schmitz held a doctoral degree in Education and worked with the Students on Ice Foundation as a program manager. She was also active as a softball coach in Cornwall.

Raheem Aman (Green Party) and Sabile Trimm (People's Party) also stood for election.

About the Riding

Cornwall, with roughly 46,000 residents, serves as the riding's economic centre. Once anchored by textile mills and manufacturing plants, the city transitioned toward logistics, call centres, and food processing, aided by its position on the Highway 401 corridor between Montreal and Toronto. The Cornwall Community Hospital completed a major redevelopment in 2014, consolidating health care services for the region.

The riding's Scottish settler heritage runs deep—the Glengarry Highland Games in Maxville, held annually since 1948, draw competitors and spectators from across North America. A historically significant francophone minority, concentrated in Cornwall and the Glengarry townships, maintains schools, churches, and cultural institutions. Upper Canada Village near Morrisburg offers a recreation of 1860s rural life along the St. Lawrence, drawing heritage tourists to a landscape shaped by the Seaway flooding of the 1950s.

The Akwesasne Mohawk Territory introduces cross-border governance and Indigenous policy into the riding's politics. Border security, agricultural support—particularly for the dairy sector—and rural broadband connectivity were recurring federal concerns. The contest was an open race following Lauzon's retirement, and Duncan's deep municipal roots and long association with the outgoing MP positioned him as the clear frontrunner.