Pollsters got it wrong in 2015, so could Labour’s lead be

The shy Tory effect is still very real, but the polling industry has worked hard to update its methods in recent years

There have been polls, so many polls it is almost impossible to keep up with them. But they are all showing extraordinary Labour leads, even two weeks into the campaign.

“If the polls are right” seems to be the soundtrack to the campaign. If the polls are right the Conservative party may end up facing its worst defeat since 1906. But could the polls be wrong?