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

🏆 Susan Kadis, the Liberal candidate, won the riding with 28,450 votes (54.7% of the vote).

🥈 The runner-up was Josh Cooper (Conservative) with 17,909 votes (34.4%), defeated by a margin of 10,541 votes.

📊 Other notable candidates: Rick Morelli (N.D.P., 7%).