Democratic presidential candidate 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 said on Sunday that if rival 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 secures the nomination, he'll have to look at her platform before he commits to making an enthusiastic case for her.

"That is totally dependent on what the Clinton platform is and how she responds to the needs of millions of Americans who are sick and tired of establishment politics and establishment economics," Sanders said on ABC's "This Week" in response to a question about whether he'd back her in the same way she pushed for President Obama in 2008.

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"You know, I can't snap my finger and tell people what to do."

Sanders said he hopes that if Clinton is the nominee, she will put together "the strongest progressive agenda."

He noted he will also do everything he can to make sure Republican front-runner 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 or "some other right-wing Republican" does not become president.

"We do not need more tax breaks for billionaires, more cuts to Social Security, Medicare, more ignoring the facts," he said.



"Republicans don't even accept the reality of climate change, let alone being prepared to do something about it."

Sanders said Clinton will have to make her case to the American people if she's the nominee.

"If Secretary Clinton is the nominee, she is going to have to make the case to the American people, not just to my supporters, but all Americans, that she is prepared to stand up to the billionaire class, she is prepared to fight for healthcare for all Americans, that she is prepared to pass paid family and medical leave, make sure that college is affordable for the young people in this country," he said.

"That is what she has got to do. And I hope, if she is the nominee, that she does that well."