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About this Mainstreet Research federal 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.


Back to all federal polls
Canada 42% ▼5 LPC 40% ▲2 CPC 8% ▲2 NDP 5% ▲2 BQ 2% ▲1 PPC 1% ▼2 GPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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177 LPC 132 CPC 24 BQ 8 NDP 2 GPC 172 seats NL 4 3 PEI 4 NS 10 1 NB 6 4 QC 43 24 10 1 ON 75 43 3 1 MB 7 6 1 SK 13 1 AB 34 2 1 BC 25 17 1 YT NWT NU 338Canada seat projections 338Canada seat projection estimate Based on Mainstreet Research federal poll August 30, 2025 🍁
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Note: Single-poll projections can be fun thought experiments, but individual polls can swing wildly and occasionally produce surprising seat counts. For a clearer picture of the race, always trust the average.

Past polls from Mainstreet Research




Breakdown by region

Atlantic Canada 52% ▲52 LPC 38% ▲38 CPC 10% ▲10 NDP Mainstreet Research federal poll | 2025-08-30 338Canada.com
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Quebec 41% ▲41 LPC 27% ▲27 BQ 23% ▲23 CPC 3% ▲3 NDP 1% ▲1 PPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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Ontario 46% ▲46 LPC 38% ▲38 CPC 9% ▲9 NDP 2% ▲2 GPC 2% ▲2 PPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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Manitoba/Saskatchewan 58% ▲58 CPC 32% ▲32 LPC 7% ▲7 NDP 2% ▲2 PPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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Alberta 59% ▲59 CPC 25% ▲25 LPC 13% ▲13 NDP 2% ▲2 PPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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British Columbia 49% ▲49 LPC 43% ▲43 CPC 8% ▲8 NDP 1% ▲1 GPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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Breakdown by gender

Female voters 49% LPC 34% CPC 9% NDP 5% BQ 2% PPC 1% GPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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Male voters 47% CPC 35% LPC 9% NDP 5% BQ 2% PPC 1% GPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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Breakdown by age group

18-34 years old 41% CPC 30% LPC 19% NDP 3% BQ 3% PPC 2% GPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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35-49 years old 46% CPC 33% LPC 9% NDP 7% BQ 2% GPC 1% PPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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50-64 years old 48% LPC 41% CPC 5% BQ 4% NDP 1% GPC 1% PPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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65+ years old 59% LPC 33% CPC 4% BQ 2% NDP 1% PPC Mainstreet Research federal poll | 2025-08-30 338Canada.com
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