Hillary Clinton Hillary Diane Rodham ClintonWhat Senate Republicans have said about election-year Supreme Court vacancies Bipartisan praise pours in after Ginsburg's death Trump carries on with rally, unaware of Ginsburg's death MORE says foreign leaders are privately reaching out to her to ask if they can endorse her to stop Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE from becoming president of the United States.

"I am already receiving messages from leaders," Clinton told an Ohio audience at a Democratic presidential town hall on Sunday night.

"I'm having foreign leaders ask if they can endorse me to stop Donald Trump."

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Clinton was responding to a question from a man in the audience who asked how she would beat Trump in a general election. The questioner, who said he was a son of immigrants who feared the Republican front-runner's anti-immigrant rhetoric, asked the same question of Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE earlier in the CNN town hall.

Clinton, the Democratic front-runner, said she didn't want to "spill the beans right now, but suffice it to say, there are many arguments that we can use against him."

"But one argument that I am uniquely qualified to bring, because of my service as secretary of State, is what [Trump's] presidency would mean to our country and our standing in the world."

CNN moderator Jake Tapper asked Clinton who the foreign leaders were who had been reaching and asking if they could endorse her to stop Trump.

"Some have done it publicly, actually," Clinton replied, singling out Italian Prime Minister Matteo Renzi.

Tapper pressed her about who the private messages had come from.

"No. ... We're holding that in reserve," Clinton responded with a laugh.

"I believe that I will have an opportunity to really focus in on how dangerous a Donald Trump presidency would be, for our standing, for our safety, for the peace of the world."