US President Donald Trump has refused to commit to a peaceful transfer of power if he loses November’s election.
“Well, we’ll have to see what happens,” the President told a news conference at the White House. “You know that.”
Mr Trump also said he believed the election result could end up in the US Supreme Court, as he again cast doubt on postal voting.
More states are encouraging mail-in voting, citing the need to keep Americans safe from coronavirus.
Mr Trump was asked by a reporter on Wednesday evening if he would commit to a peaceful transfer of power “win, lose or draw” to Democrat Joe Biden.
The US President currently trails his challenger in national opinion polls with 41 days to go until the election.
“I’ve been complaining very strongly about the ballots,” Mr Trump, a Republican, said. “And the ballots are a disaster.”
When the journalist countered that “people are rioting”, Mr Trump interjected: “Get rid of the ballots, and you’ll have a very – you’ll have a very peaceful – there won’t be a transfer, frankly, there’ll be a continuation.”
Back in 2016, Mr Trump also refused to commit to accepting the election results in his contest against the Democratic candidate, Hillary Clinton, which she characterised as an attack on democracy.
He was eventually declared the winner, although he lost the popular vote by three million, an outcome he still questioned.