About this Ontario poll from Mainstreet Research
This Ontario poll was fielded by Mainstreet Research in May 2022, with a middle field date of May 4, 2022. The poll collected data from a total sample of n=1,335 Ontario respondents via IVR technology (automated calls).
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 ±2.7%, 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 (May 2022), the Ontario PC Party remains stable at 37%, the Ontario Liberal Party is up one point (variation smaller than moe), and the Ontario NDP is up one point (variation smaller than moe).
You can read more information on this poll here.