Hillary Clinton has refused to rule out taking on the job of Vice President if the Democrats win the election in November.

The former Secretary of State, who has run two failed campaigns to become president herself, said she 'probably won't be asked' to take the role by whoever becomes the Democrat nominee this time around.

But, speaking to Ellen DeGeneres on an episode of her show due to air Thursday, she added 'never say never' - recalling how she turned down Obama's offer of leading the State Department twice, before accepting and serving for four years.

Clinton, 72, also hailed Mitt Romney's decision to vote to convict Trump of abuse of office at his impeachment trial while all other Republican senators voted to acquit.

Hillary Clinton has refused to rule out taking on the job of Vice President if the Democrats win the election in November and she is offered, while speaking with Ellen DeGeneres

She said it is now up to voters to hold Trump accountable at the election, urging them to kick him out of office.

Romney was the only Republican to cross party lines and vote to convict Trump of abuse of office - the first time in American history that at least one senator from both parties has voted to convict on an impeachment charge.

The vote means that Trump remains in office, a fact that was quickly celebrated by the President amid calls for Romney to be kicked out of the Republican party.

To a round of applause from the studio audience, Clinton said: 'I was disappointed that not more of the Republican senators took the stand that Mitt Romney took.

'[He] gave an extraordinary speech on the floor of the Senate talking about why he felt the weight of history on his shoulders and he was going to vote to impeach on one of the articles of impeachment.

'The evidence was really clear by the time that it was all presented that actually the president done what he was accused of, in fact he admitted that he'd done what he was accused of, he just didn't think anyone would hold him accountable.

The former Secretary of State, who ran two unsuccessful campaigns for president, said she 'probably' won't be asked before adding: 'Never say never'

Clinton also spoke about a new documentary in which she recapped the Monica Lewinsky scandal, confessing that it was 'emotionally draining' to go over it again

'We're now moving on but I hope that voters and Americans of all political stripes pay attention and say to themselves "he has to be held accountable", and now the way to do that is in the election.'

Drawn on who she prefers as a candidate to beat Trump she refused to say, but asked voters to 'look carefully' at who they think can win the election and who can government most effectively after they have won.

Confronted over her recent comments that 'nobody likes' Bernie Sanders - who emerged from the Iowa caucaus as joint-frontrunner with Pete Buttigeig - she refused to back away from them.

Instead, she said: 'You've got to be responsible for what you say and what you say you're going to do.

'We have to rebuild trust in our fellow Americans and our institutions and if you promise the moon and can't deliver the moon that's going to be just another indicator of how we can't trust each-other.

Clinton also praised Mitt Romney (right) for voting to convict Donald Trump of abuse of office, despite the remaining Senate Republicans voting to acquit

Trump led calls for Romney to be kicked out of the Republican party following the vote, which will see him remain in office

'Maybe it's not good theater, maybe it's not good politics anymore, but I think you have to tell people what you mean, mean what you say, and have some sense of responsibility for how you would get anything done that you talk about.'

Clinton also spoke about an upcoming Hulu documentary, called 'Hillary', in which she was interviewed at length about her life including the Monica Lewinsky scandal.

Recalling the fallout from the affair, she recounted how she was vilified by members of the public who continued supporting her husband.

She added: 'It was a really emotionally draining experience to go through it again but I have to say: once I saw the whole four-hours of the documentary, I hope that our talking about this, my willingness to address all of this, really does help other people.

'There are lessons from my life from our times because people need to be thoughtful about the decisions they make in their lives and we should be kinder and more supportive to everyone who makes the best decisions that they think they can make.'

The Ellen DeGeneres Show featuring Hillary Clinton will air Thursday, February 6th, at 4pm EST on NBC Channel 4