About this Quebec poll from Mainstreet Research
This Quebec poll was fielded by Mainstreet Research in May 2026, with a middle field date of May 15, 2026. The poll collected data from a total sample of n=1,468 Quebec respondents via IVR technology (automated calls).
The margin of error [moe] for this poll is estimated at ±2.6%, 19 times out of 20 (for entire sample only) around the 50%-mark.
The regional breakdown of this poll was not made publicly available.
If we compare these national numbers with the previous poll from Mainstreet Research (June 2025), the Liberal Party climbs three points from 29% to 32%, the Coalition avenir Québec climbs eight points from 16% to 24%, and the Parti Québécois loses eight points from 31% to 23%.
You can read more information on this poll here.