About this poll

This federal poll was fielded by Mainstreet Research in August 2025, with a middle field date of August 30, 2025. The poll collected data from a total sample of n=1,008 Canadian respondents via IVR technology (automated calls).

The margin of error [moe] for this poll is estimated at ±3.1%, 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 (June 2025), the Liberal Party loses five points from 47% to 42%, the Conservative Party climbs two points from 38% to 40% (variation smaller than moe), and the New Democratic Party climbs two points from 6% to 8% (variation smaller than moe).

You can read more information on this poll here.