About this Ontario poll from Mainstreet Research
This Ontario poll was fielded by Mainstreet Research in February 2025, with a middle field date of February 24, 2025. The poll collected data from a total sample of n=1,516 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 ±2.5%, 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 (February 2025), the Ontario PC Party remains stable at 42%, the Ontario Liberal Party remains stable at 31%, and the Ontario NDP is down one point (variation smaller than moe).
You can read more information on this poll here.