About this Quebec poll from Mainstreet Research
This Quebec poll was fielded by Mainstreet Research in September 2018, with a middle field date of September 3, 2018. The poll collected data from a total sample of n=2,289 Quebec respondents via IVR technology (automated calls).
The margin of error [moe] for this poll is estimated at ±2.0%, 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 (August 2018), the Coalition avenir Québec loses six points from 36% to 30%, the Liberal Party climbs three points from 26% to 29%, and the Parti Québécois climbs two points from 18% to 20% (variation similar to moe).
You can read more information on this poll here.