David recently gave the Political Quarterly annual lecture, on the subject 'Nobody Knows Anything: Why Is Politics So Surprising?' We hear his thoughts on why so many people - including podcasts like this one! - keep calling elections wrong. And why, when there is so much more information available about how people behave, do we know so little about what the voters are really thinking? Recorded at an echoey venue in Bush House, London - apologies for the sound quality, hope you enjoy the content.