Iran's president has criticised the US presidential candidates' behaviour during debates.
Democratic candidate Hillary Clinton is taking on Republican Donald Trump as they bid to lead the US and the pair have contested three televised debates, characterised by increasing animosity towards each other.
President Hassan Rouhani spoke to a crowd during a visit to the central Iranian city of Arak.
He said: "Did you see the debate and the way of their speaking, accusing and mocking each other?
"Do we want such a democracy and election in our country?"
Iran is holding presidential elections in May 2017.
In the second US debate, attention turned to the behaviour towards women of Mr Trump and Mrs Clinton's husband - former president Bill Clinton.
Nearly a dozen women have accused him of unwanted advances or sexual assault, causing Mr Trump to draw attention to allegations against Mr Clinton.
Mr Trump has vowed to sue the women who have accused him, branding them liars.
After the third clash, there has been much discussion of Mr Trump's suggestion that he would not concede if he lost the election. Mrs Clinton has said that is a "direct threat to our democracy", while her unrepentant rival continued to insist that the system was "rigged".
Mr Rouhani said that during his September visit to the UN General Assembly, he was asked which of the candidates he preferred.
"I said, what? Should I prefer bad to worse or worse to bad?" he said, in comments broadcast live by state television.
It marks his first public comments on the US election.