Wikipedia
Sarnia—Lambton (formerly known as Sarnia) is a federal electoral district in Ontario, Canada, that has been represented in the Canadian House of Commons since 1968. It is located in the area of the city of Sarnia, in the southwest corner of the province of Ontario.
Until 2015, Sarnia—Lambton, with its predecessors Sarnia, and Lambton West, was Canada's most bellwetherly riding, having voted for the winning party from 1963 to 2011.
Sarnia—Lambton is a provincial electoral district in southwestern Ontario, Canada. It elects one member to the Legislative Assembly of Ontario.
The riding was created in 1999 from Sarnia and from part of Lambton when ridings in Ontario were redrawn to match federal ridings.
From 1999 to 2007, the riding consisted of the municipalities of Sarnia, Point Edward, St. Clair and Sarnia 45. For the 2007 election, it gained the municipalities of Petrolia, Plympton-Wyoming, Oil Springs and Enniskillen.