📌 The Ontario electoral district of Thornhill was contested in the 2003 election.

🏆 MARIO G. RACCO, the Liberal candidate, won the riding with 21,419 votes (46.9% of the vote).

🥈 The runner-up was TINA MOLINARI (Progressive Conservative) with 20,623 votes (45.2%), defeated by a margin of 796 votes.

📊 Other notable candidates: LAURIE ORRETT (NDP, 6%).