It's 2pm which means that Sir John Curtice already knows the result of the exit poll. The rest of us have to wait until 10pm... pic.twitter.com/hUspWC4HQt — Tom Harwood (@tomhfh) July 4, 2024Has the exit poll been wrong before? In 2017, the exit poll predicted a shock hung parliament, despite Theresa May's party leading opinion polls throughout the campaign. In the end, the Tories won 317 seats, just three more than the exit poll had predicted, and Labour took 262, four fewer than the poll suggested. In 1974, the first British exit poll predicted a Labour majority of 132, but the actual majority was three.