Live blog

Democrats were left discussing replacing Joe Biden after what was widely acknowledged to have been a disastrous debate performance against Donald Trump. Follow the latest with our US presidential debate live blog

Video

Biden lost his train of thought multiple times, mumbled and froze mid-sentence. Watch the video here

Who won?

How did Biden and Trump perform? Our writers give their snap verdicts.

What next?

Will the Democrats oust Biden – and who may be in the running to replace him? A short guide on how it could play out.