|Quebec electoral district|
|Defunct provincial electoral district|
|Legislature||National Assembly of Quebec|
Many sources (including the National Assembly website) write it as Châteauguay-La Prairie, but contemporary sources show the "Laprairie" part of the name written as one word. This alternate way of spelling it is probably by analogy with the modern-day La Prairie electoral district, which was spelled "Laprairie" before 1988.
It was created for the 1939 election, from parts of the Châteauguay and Napierville-Laprairie electoral districts. It existed for only that one election. It disappeared in the 1944 election and its successor electoral district was the recreated Châteauguay.
Members of Legislative Assembly
- "Results by Ridings Outside City". The Gazette (Montreal). October 26, 1939. p. 6. Retrieved May 6, 2012.
- "54 gains libéraux sur l'Union Nationale". Le Devoir (in French) (Montreal). October 26, 1939. p. 6. Retrieved May 6, 2012.
- "La Prairie: History of the electoral division". Elections Quebec. Le Directeur général des élections du Québec. Retrieved 2012-05-06.