About this Quebec poll from Mainstreet Research

The margin of error [moe] for this poll is estimated at ±2.1%, 19 times out of 20 (for entire sample only) around the 50%-mark.

If we compare these national numbers with the previous poll from Mainstreet Research (May 2026), the Coalition avenir Québec climbs six points from 24% to 30%, the Parti Québécois climbs two points from 23% to 25% (variation similar to moe), and the Liberal Party loses ten points from 32% to 22%.

You can read more information on this poll here.