📌 The Canadian federal electoral district of Longueuil was contested in the 2004 election.

🏆 Caroline St-Hilaire, the Bloc Québécois candidate, won the riding with 28,701 votes (61.0% of the vote).

🥈 The runner-up was Robert Gladu (Liberal) with 11,939 votes (25.4%), defeated by a margin of 16,762 votes.

📊 Other notable candidates: Nicole Fournier-Sylvester (N.D.P., 5%).