The 1967 classic garnered nearly 50 per cent of the vote, beating the other nominees by a wide margin.
"We started this contest because so many people were angry about our song selection," said On the Coast's Lisa Christiansen.
"But when it comes down to it, it's good to know our audience chose a song that was so positive."
Here are the results:- What a Wonderful World - Louis Armstrong 46%
- Here Comes the Sun - The Beatles 32%
- Bobcaygeon - The Tragically Hip 12%
- Hey Ya! - Outkast 6%
- Don't Think Twice It's Alright - Bob Dylan 5%