London Chatham-Kent Southwest Middlesex Sarnia Point Edward St. Clair Southwold Brooke-Alvinston Dutton/Dunwich Enniskillen Middlesex Centre Strathroy-Caradoc West Elgin Plympton-Wyoming North Middlesex Newbury Petrolia Warwick Adelaide-Metcalfe Oil Springs Dawn-Euphemia Lambton Shores Lake Erie (lac Érié) Lake Huron (lac Huron) Lake St. Clair (lac Sainte-Claire) COUNTY OF MIDDLESEX COUNTY OF LAMBTON COUNTY OF ELGIN FOREST RD HWY 4 ST CLAIR RD 401 402 H W Y 4 0 Sydenham