District created 1908 Last contested 1999 District abolished 1999 | First contested 1908 | |
Census subdivisions Port Arthur → Thunder Bay | ||
Port Arthur was a provincial electoral district in the Canadian province of Ontario, active from 1908 to 1999. The district was created out of the former Port Arthur and Rainy River district for the 1908 election, serving the city of Port Arthur and the surrounding area.
When the city of Port Arthur merged with the neighbouring city of Fort William in 1970 to create the current city of Thunder Bay, the district of Port Arthur and the corresponding electoral district Fort William continued as separate districts serving the new city.
For the 1999 provincial election, the government of Mike Harris redistributed provincial electoral districts to correspond to the same boundaries and names that were in use for the province's federal electoral districts. Port Arthur was merged at that time into the new district of Thunder Bay—Superior North.