📌 The Canadian federal electoral district of Whitby—Oshawa was contested in the 2004 election.

🏆 Judi Longfield, the Liberal candidate, won the riding with 25,376 votes (45.1% of the vote).

🥈 The runner-up was Ian MacNeil (Conservative) with 20,290 votes (36.0%), defeated by a margin of 5,086 votes.

📊 Other notable candidates: Maret Sadem-Thompson (N.D.P., 14%).