The perils of opinion polls

Today’s puzzle is about voters who are embarrassed to tell pollsters what they really think.

In elections past, right wing parties like the Conservatives have often done better than opinion polls predict. One explanation is that ‘shy Tory’ voters lie to pollsters because they are embarrassed to admit their preferences in public. With the US polls neck and neck, the existence of shy Trump voters could decide the election. (As could shy Harris voters, of course.)