Donald Trump has made history by becoming the first former US President to be criminally charged, facing 91 felony charges across four separate cases. As he heads towards an election rematch with Joe Biden, he has promised to continue his campaign even if he is convicted or sent to prison. What impact could this have on his campaign and has a prisoner ever run for President before?

Eugene V Debs (1855-1926) was one of the best-known Socialists in the United States. He ran for president five times – the final time from prison. Though his politics were rather different from Trump’s, his performance – he won almost a million votes – suggests how a criminal conviction can in fact add momentum to a presidential campaign.

Guests: Adam Smith, Professor of US Politics and Political History at the University of Oxford; Quinta Jurecic, Fellow in Governance Studies, Brookings; Kathleen Hall Jamieson, Professor of Communication at the University of Pennsylvania.

Producer: Dan HardoonReader: Eric Meyers