"Pat" Davidson (born June 30, 1946, in Petrolia, Ontario) was a member of the House of Commons of Canada from 2006 until 2015 representing the riding of Sarnia—Lambton and is a member of the Conservative Party of Canada.

Davidson previously served as mayor of Wyoming (1991–2000) and Plympton-Wyoming, Ontario (2001–2006) and warden of Lambton County.

She first won her seat in the 2006 federal election by defeating incumbent Liberal Roger Gallaway by more than 4,000 votes.

Davidson has publicly declared her opposition to the Canadian asbestos industry, which put her in disagreement with her party and then-Prime Minister Stephen Harper.

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