Las Vegas: Republican presidential nominee Donald Trump doubled down on controversial claims that the US election is rigged during a presidential debate Wednesday, refusing to say he will respect the result.
"I'll look at it at the time," Trump said. "What I've seen is so bad."
An angry Clinton responded with incredulity to the highly controversial charge that questions the very health of US democracy.
"Let's be clear about what he's saying and what that means. He's denigrating and talking down our democracy," she said.
"I, for one, am appalled that somebody who is the nominee of one of our two major parties would take that kind of position."
Asked by the debate moderator whether he would concede if the results showed he lost to Clinton, Trump again demurred. "I'll keep you in suspense, okay?"
"This is horrifying," Clinton said.
Trump's comments contradicts pledges by his running mate, Indiana Gov. Mike Pence, as well as his daughter, Ivanka
Ivanka Trump has said that the Republican presidential candidate would accept the results of the 8 November election.
Trump, 70, has been warning ominously that the vote is "rigged," particularly since his support has slid for the past 10 days after a series of charges that he sexually assaulted women.
That has fuelled fears that his supporters might rise up in some fashion should they feel the election was not won fairly.
"He'll either win or he won't win and I believe he'll accept the outcome either way," Ivanka told MSNBC in an interview yesterday.
Ultimately, "my father is in this to win it," she said in the interview in California.
But "I'm not interested in talking about alternative outcomes and of course I think my father will always do the right thing. That's the type of person he is."
With inputs from agencies
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Updated Date: Oct 25, 2016 10:55:36 IST