Observers of American elections often talk of about an 'October Surprise' -- the unexpected event or revelation that reshapes the campaign in its final days. But few would have predicted the announcement that came early on Friday: President Donald Trump and his wife Melania have both tested positive for Covid-19. It followed news that a top Trump aide, Hope Hicks, had contracted the virus a day before. Presenter: Peter Dobbie Guests: Claire Finkelstein - University of Pennsylvania Law School. Jason Emert - former Chairman of the Young Republican National Federation. Natasha Lindstaedt - Professor of US Government, University of Essex. - Subscribe to our channel: aje.io/AJSubscribe - Follow us on Twitter: twitter.com/AJEnglish - Find us on Facebook: www.facebook.com/aljazeera - Check our website: www.aljazeera.com/ #AlJazeeraEnglish #USTrump