Ethnic groups: 63.7% White, 10.1% South Asian, 5.1% Chinese, 4.9% Black, 3.3% Arab, 3.3% Filipino, 1.9% Latin American, 1.5% Southeast Asian, 1.3% Indigenous, 1.2% West Asian Languages: 65.5% English, 4.1% Polish, 2.4% Mandarin, 2.4% Arabic, 2.2% Portuguese, 2.0% Urdu, 1.9% French, 1.9% Spanish, 1.8% Italian, 1.5% Tagalog, 1.3% Serbo-Croatian Religions: 58.5% Christian (34.8% Catholic, 3.9% Anglican, 3.6% Christian Orthodox, 3.3% United Church, 1.4% Presbyterian, 1.1% Baptist, 11.6% Others), 8.9% Muslim, 3.1% Hindu, 1.1% Buddhist, 26.4% No religion Median income (2020): $45,600 Average income (2020): $73,900 Conservative support is centred in the central part of the riding, particularly in the upscale Lorne Park and Mineola areas, while the Liberals tend to do better along the waterfront of the riding, such as Port Credit and Lakeview, and the eastern and western edges of the riding in neighbourhoods like Clarkson and Sheridan.

It was defined to consist of the part of the City of Mississauga lying southeast of a line drawn from northeast to southwest along the Queensway to Mavis Road, north along Mavis Road until Dundas Street and west along Dundas Street to the southwestern city limit.

This trend is aligned with the continued Liberal Party of Canada's dominance of Greater Toronto Area politics and seats.

Following the 2022 Canadian federal electoral redistribution, at the first election held after approximately April 2024, It will gain part of Mississauga East—Cooksville south of Dundas Street and west of Stillmeadow Road.

The riding was generally assumed to be a top Tory target for the next election; however, the drawn-out and somewhat acrimonious nature of the Conservative nomination process, and Szabo's increased profile as a result of his chairmanship of the House of Commons Ethics committee may have damaged Conservative attempts to capture the riding.

Despite the Conservatives strengthening in the 2008 election overall, Arrison was unable to defeat Szabo, and Mississauga South was one of the few ridings outside Quebec where the Liberal Party increased the percentage of the vote received from 2006 (albeit very slightly).