📌 The Canadian federal electoral district of Markham—Unionville was contested in the 2008 election.

🏆 John McCallum, the Liberal candidate, won the riding with 25,296 votes (55.0% of the vote).

🥈 The runner-up was Duncan Fletcher (Conservative) with 13,855 votes (30.1%), defeated by a margin of 11,441 votes.

📊 Other notable candidates: Nadine Hawkins (NDP-New Democratic Party, 10%).