Middlesex (federal electoral district)

Middlesex was a federal electoral district in Ontario, Canada, that existed at various times throughout Canadian history. It was not a continuously existing riding, but rather a name used for different ridings within Middlesex County over the years.

Historically, Middlesex ridings have included variations in their boundaries reflecting population changes and electoral reforms. These ridings generally encompassed parts of Middlesex County, which is located in southwestern Ontario. Specific boundaries varied significantly each time the riding was defined or redefined for elections.

The political representation in Middlesex ridings has shifted between different political parties throughout its history, reflecting the changing political landscape of Ontario and Canada. Historical election results and representative parties can be found through archival records of Elections Canada.

Because the name "Middlesex" has been applied to multiple distinct electoral districts, researching a specific historical election requires careful attention to the specific boundaries of the Middlesex riding as they existed at that time. These details are often found in Orders in Council defining electoral district boundaries.