US Presidential Debate:Donald Trump and Hillary Clinton face off at second debate

The US presidential candidates have met on stage for a second debate, as the Republican candidate reels from the release of a recording of his lewd talk about groping women.

The event at a campus in St Louis, Missouri, followed a town-hall format where the audience all undecided voters chosen by the Gallup Organization asked half of the questions on "topics of public interest".

Other comments came in from social media users. 

The candidates smiled at each other but did not shake hands when they were introduced on stage.

The debate started off with a discussion about whether Donald Trump is fit to be commander-in-chief given the way he has spoken about women.

He repeated what he said after a tape of his sexually charged comments in 2005 surfaced, that it was a "locker-room talk" that he was not proud of.

ALJAZEERA