The Curtice-Firth Methodology of Exit Polls

At 10pm on election day, the polls close and the broadcasters reveal what the exit poll has predicted, estimating how many seats each party will take.

This moment of television is made possible by an innovative statistical method. It also relies on the hard work of polling companies, academics and journalists against the ceaseless march of time.

The broadcasters’ exit poll was, once again, accurate. (Image: BBC)