Graphs

Note: Interactive graphics and our estimates of house effects are updated as new polls are published.

Developments since the Last General Election

All Polls

Gains/Losses

Differences

House Effects

This graph displays the 'house effects' of the polling companies for each party. A positive house effect means that a pollster structurally estimates a certain party higher than the average pollster. The dot indicates the best estimate for the house effect, the lines display the 95% uncertainty margin.