In one of the more striking moments, Mr Trump twice declined to say whether he would accept the election's outcome, breaking with the country's long-standing tradition of a losing candidate's concession after the votes are counted.
"That's horrifying," Mrs Clinton shot back.
"He is denigrating and he is talking down our democracy. And I, for one, am appalled that somebody who is the nominee of one of our two major parties would take that kind of a position."
[source : US presidential debate: Trump won't commit to accept election result, BBC, http://www.bbc.co.uk/news/election-us-2016-37706499, 20th October 2016]
So Trump refused to say that he would accept the result. Clinton mocked him for it. But it is Stein who is not accepting the result? On behalf of Clinton?