Details on the methodology of the poll aggregation and seat projections are available here and here. Methodology for the forecasting model used during election campaigns is available here.
Projections on this site are subject to the margins of error of the opinion polls included in the model, as well as the unpredictable nature of politics at the riding level. The degree of uncertainty in the projections is also reflected by the projections' high and low ranges, when noted.
ThreeHundredEight.com is a non-partisan site and is committed to reporting on polls responsibly.