Regular Will Trump Win? listeners will have been bracing for an October surprise, but this campaign twist on the first day of the month still stunned the world.
The US President and First Lady's positive Coronavirus tests have rocked the race to the White House and placed the power couple in quarantine at one of the most critical points in the 2020 campaign.
Daniel Hewitt gets instant analysis from Robert Moore and Laura Schwartz on what this means for Trump's hopes of re-election, what protocol is in place should his condition worsen and how Joe Biden will look to take advantage of this latest twist while maintaining respect for his poorly opponent.
Plus our series's digital detective Fred Dimbleby assesses the response online to Trump's positive test and explains why it has changed the role of social media in this remarkable campaign.