What lies behind Boris Johnson's overwhelming election victory? In this programme, Anne McElvoy talks to the key figures across the political spectrum about how the 2019 general election was fought and lost.

To what extent was this a 'Brexit election' and how did the Conservative Party reach out to voters in places that it had not won for decades and in some cases generations? Why did the Opposition Parties agree to holding the election in the first place? What led to Labour's worst defeat since 1935 and why did Jeremy Corbyn's campaign fail to make the impact he had made in 2017? Why did the Liberal Democrats struggle to make the breakthrough that they had hoped for and what difference did the Brexit Party's decision to stand down in Conservative held seats make to the result.

Producer: Peter Snowdon