About this Quebec poll from Ipsos
This Quebec poll was fielded by Ipsos in August 2018, with a middle field date of August 20, 2018. The poll collected data from a total sample of n=1,501 Quebec respondents via an online panel.
The margin of error for an online sample is not applicable.
For comparison purposes, a random sample of this size would yield a margin of error [moe] of ±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 Ipsos (May 2018), the Coalition avenir Québec is up one point (variation smaller than moe), the Liberal Party loses three points from 32% to 29%, and the Parti Québécois loses two points from 20% to 18% (variation similar to moe).
You can read more information on this poll here.