Dauphin—Swan River—Marquette

Dauphin—Swan River—Marquette is a large rural federal electoral district in western Manitoba stretching from the Saskatchewan border eastward to Lakes Winnipegosis and Manitoba. The by-election was called after Conservative MP Inky Mark resigned his seat on September 15, 2010, to run for mayor of Dauphin in the October 2010 municipal elections. Mark had represented the riding since 1997.

Candidates

Robert Sopuck (Conservative) — Sopuck held a Bachelor of Science from the University of Manitoba and a Master of Science from Cornell University. He had extensive experience in natural resource management, having worked as a fisheries biologist for both the federal Department of Fisheries and Oceans in the Eastern Arctic and for the Province of Manitoba. From 2000 to 2009, he served as vice-president of policy for Western Canada at the Delta Waterfowl Foundation, and he had also worked as director of environmental policy and the Rural Renaissance Project at the Frontier Centre for Public Policy.

Denise Harder (NDP) — Harder ran as the New Democratic Party candidate in the by-election.

Christopher Scott Sarna (Liberal) — Sarna was the Liberal Party candidate.

Kate Storey (Green Party) — Storey ran as the Green Party candidate.

About the Riding

Dauphin—Swan River—Marquette covers a vast expanse of western Manitoba, bounded by Saskatchewan to the west, Lakes Winnipegosis and Manitoba to the east, and the ridings of Brandon—Souris and Portage—Lisgar to the south. The riding takes its name from three of its principal communities: Dauphin, Swan River, and the historic Marquette district.

The riding is predominantly rural and agricultural, with the economy centred on grain farming, cattle ranching, and related agribusiness. Dauphin, the riding's largest community, serves as a regional service centre and is known for hosting Canada's National Ukrainian Festival, reflecting the area's significant Ukrainian-Canadian heritage. Swan River, in the northern part of the riding, is another important service centre for the surrounding agricultural and forestry region.

The riding has a significant Indigenous population, comprising roughly a quarter of residents. The landscape includes the Riding Mountain National Park, the Duck Mountains, and the parkland belt transitioning from prairie grassland to boreal forest. Forestry, tourism, and public sector employment supplement the agricultural economy.