Henderson was first elected to the Ontario legislature in the 1963 provincial election, defeating Liberal Party candidate Russell Watson by 874 votes in Lambton East.
Joe Henderson | Henderson | Lorne Greene | Lorne | Florence Henderson | Nic Henderson | Eddie Henderson | Henderson, New Zealand | Shirley Henderson | Dickie Henderson | Scott Henderson | Lorne, Scotland | Brian Henderson | Skitch Henderson | Nicky Henderson | Lorne Nystrom | Henderson's Boys | Eddie Henderson (musician) | Henderson Motorcycle | Henderson, Kentucky | Gerard Henderson | Vicki Butler-Henderson | Ray Henderson | Paul Henderson | Lorne, Victoria | Lorne Michaels | Ken Henderson | Josh Henderson | James Pinckney Henderson | Henderson County, Texas |