First off, it’s important to note that not all manufacturers supply monthly model sales data in Canada. To be specific, Ford doesn’t. So, the numbers below exclude sales of the Ford Fusion Energi, Ford C-Max Energi, and Ford Focus Electric. Also, the Model S numbers are estimates.
From the limited numbers we have, the Chevy Volt is clearly #1, the Nissan LEAF #2, and the Tesla Model S #3.
Here are static versions of the interactive charts above: