A detailed explanation of the vote and seat projection models and how the probabilities are calculated can be found here.
The projections are subject to the margin of error of the polls included in the model, as well as the inherent inability for the projection model to make perfect estimations of real-world dynamics. The projection ranges are a reflection of the degree of error polls have made in recent elections. The probabilities are based on how polls have differed from election results in the past.
The following chart lists the polls currently included in the projection model, as well as the weight each poll carries.
These riding projections are not polls and are not necessarily an accurate reflection of current voting intentions in each riding. It may be necessary to right-click and open the chart in a new window in order to be able to read it.
The chart below shows the evolution of the Nova Scotia projection. The shaded bars show the likely and maximum/minimum ranges as well.