Opinion polling for the 2021 Canadian federal election by constituency

Various polling organizations have been conducting opinion polling in specific ridings in the lead up to the 2021 Canadian federal election. The results of publicized opinion polling for individual constituencies are detailed in this article.

Given the cost associated with polling individual constituencies, polling typically occurs in constituencies that are of particular interest, such as those considered marginal or facing an impending by-election. However, it's important to note that the constituencies polled may not necessarily be representative of a national average swing. Under the first-past-the-post electoral system, true marginal seats, by definition, hold significant influence over the outcome of the election.