About this Quebec poll from Mainstreet Research
This Quebec poll was fielded by Mainstreet Research in May 2017, with a middle field date of May 12, 2017. The poll collected data from a total sample of n=1,501 Quebec respondents via IVR technology (automated calls).
The margin of error [moe] for this poll is estimated at ±2.5%, 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 (April 2017), the Coalition avenir Québec climbs six points from 26% to 32%, the Liberal Party loses two points from 33% to 31% (variation similar to moe), and the Parti Québécois loses three points from 27% to 24%.
You can read more information on this poll here.