Ethnic groups: 82.3% White, 11.5% Indigenous, 2.2% Filipino, 1.5% South Asian Languages: 70.5% English, 11.7% German, 7.7% Plautdietsch/Low German/Low Saxon, 3.5% French, 1.5% Russian, 1.2% Tagalog Median income: $37,200 (2020) Average income: $45,560 (2020) According to the 2011 Census, Portage—Lisgar was the riding with the highest percentage of native German speakers (23.6% of the population at the time) in all of Canada.

[7] Only Inuktitut (Nunavut: 66.8%) and Panjabi (Punjabi) (Newton—North Delta, in British Columbia: 33.4%) exceed this concentration of native speakers of a non-official language in a single riding.

The Liberals are also strong in the Long Plain First Nation, which they won in 2019, and also have some residual strength in the Rural Municipality of St. François Xavier.

It originally consisted of the rural municipalities of Argyle, Cartier, Dufferin, Grey, Lakeview, Lorne, Louise, Macdonald, North Cypress, North Norfolk, Pembina, Portage la Prairie (except for the northeast corner), Roblin, Roland, South Norfolk, Stanley, Thompson, Victoria and Westbourne; the cities of Portage la Prairie and Winkler; the towns of Carberry, Carman, Gladstone, Manitou, Morden, Pilot Mound, and Treherne; the villages of Cartwright, Crystal City, MacGregor, Notre Dame de Lourdes, Somerset, and St. Claude; and the Indian reserves of Dakota Plains 6A, Long Plain 6, and Swan Lake 7.

It gained the rural municipalities of Rhineland and St. François Xavier; and the towns of Altona, Gretna and Plum Coulee from Provencher.