Honoré-Mercier (formerly Anjou—Rivière-des-Prairies) is a federal electoral district in Quebec, Canada, that has been represented in the House of Commons of Canada since 1988.

The district includes the Borough of Anjou, the eastern part of the Borough of Rivière-des-Prairies–Pointe-aux-Trembles, and the northern part of the Borough of Mercier—Hochelaga-Maisonneuve.

The neighbouring ridings are Hochelaga, Saint-Léonard—Saint-Michel, Bourassa, Alfred-Pellan, Montcalm, and La Pointe-de-l'Île (electoral district).

While the other eastern Montreal ridings have traditionally been Bloc Québécois strongholds, Honoré-Mercier is politically a very divided riding. Rivière-des-Prairies is very Liberal leaning, while Anjou supports the Bloc for the most part, but has some Liberal pockets.

However, the NDP's "orange wave" in the 2011 election overwhelmed previous distinctions, with the New Democrats winning 149 of 218 polling divisions in the district.

The district was created in 1987 under the name Anjou—Rivière-des-Prairies from parts of Gamelin, Montreal—Mercier and Saint-Léonard—Anjou ridings.

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