ridings outside Quebec where the Liberal Party increased the percentage of the vote received from 2006 (albeit very slightly). From 2011 to 2015 the riding was held by the Conservatives, however, starting in 2015 as a part of the overall Liberal dominance of Greater Toronto Area seats and ridings, the riding has gone and stayed Liberal. Incumbent Sven Spengemann defeated Conservative Stella Ambler in 2015 and 2019 and Conservative challenger Michael Ras in the 2021 snap election. In May 2022, Spengemann announced his resignation in order to accept a position with the United Nations, prompting a by-election. Throughout the summer the Conservatives nominated Peel Police officer and gang prevention expert Ron Chhinzer, the NDP put forward Julia Kole - a party staffer, and the Greens nominated Mary Kidnew - a climate activist. By November the Liberals nominated Charles Sousa, former Ontario Finance Minister (2013-2018) and MPP for Mississauga-Lakeshore (2007-2018), and by the following days, Prime Minister Justin Trudeau called the by-election (November 12) for an election day of December 12. Sousa won the by-election soundly on Monday, December 12, 2022, capturing just over 51% of the vote which is the highest Liberal vote share in Mississauga-Lakeshore in years. The Conservatives trailed with 37% of the vote with the NDP and Greens collecting last than 5% of the vote, respectively. Riding associations Riding associations are the local branches of political parties: Members of Parliament This riding has elected the following members of the House of Commons of Canada: Election results Mississauga—Lakeshore (2013-present) Mississauga South (1976-2013) Note: Conservative vote is compared to the total of the Canadian Alliance vote and Progressive Conservative vote in 2000 election. Change is based on redistributed results. Note: Canadian Alliance vote is compared to the Reform vote in 1997 election. See also List of Canadian federal electoral districts Past Canadian electoral districts References federal riding history from the Library of Parliament 2011 Results from Elections Canada Campaign expense data from Elections Canada Notes External links Tom Simpson's Campaign for the Conservative Nomination in Mississauga South Paul Simas, Green Party of Canada Candidate in Mississauga South Green Party of Canada electoral district association for Mississauga South Ontario federal electoral districts Politics of Mississauga 1976 establishments in Ontario