Longueuil—Saint-Hubert (formerly Longueuil—Pierre-Boucher and Longueuil) is a federal electoral district in Quebec, Canada, represented in the House of Commons of Canada from since 2015 [3] This South Shore district in the Quebec region of Montérégie includes the eastern part of the City of Longueuil.

This mainly Francophone riding is one of the NDP's safer seats on the South Shore.

[citation needed] Despite winning the riding again in 2015, it was an extremely close contest.

The Liberals surged into second place, just one point away from defeating the incumbent NDP candidate.

The electoral district was created as "Longueuil" in 1952 from parts of Chambly—Rouville and Châteauguay—Huntingdon—Laprairie ridings.