Bernie-supporter Susan Sarandon says she doesn't know if she would vote for Clinton over Trump

Susan Sarandon fueled the DNC's worst fears on Monday when she said she wasn't sure she'd vote for Hillary Clinton in a general election. 

The liberal-minded actress, who has been supporting Bernie Sanders on the campaign trail, was evasive when asked in an interview on All in with Chris Hayes Monday night who she would support if the Vermont senator fails to win the Democratic nomination

'In certain quarters, there’s growing concern that the folks that are into Bernie Sanders have come to despise Hillary Clinton or reject Hillary Clinton,' Hayes said. 'And that, should she be the nominee - which is as yet undetermined - they will walk away.'

'That’s a legitimate concern. Because they’re very passionate and very principled,' Sarandon responded.

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Susan Sarandon said she's not sure whether she would support Hillary Clinton if she became the Democratic nominee 

'But isn’t that crazy? If you believe in what he believes in?' Hayes asked. 

'Yeah but she doesn’t,' Sarandon said. 'She’s accepted money from all those people. She doesn’t even want to fight for a $15 minimum wage, so these are people that have not been - that have not come out before, so why would we think they’re going to come out now for her, you know?'  

Sarandon then went on a tangent, but Hayes brought it back by asking her directly who she would support if it came down to a contest between Hillary Clinton and Donald Trump in the general election. 

'I don’t know,' Sarandon demurred. 'I’m gonna see what happens.'

The liberal-minded actress has been supporting Bernie Sanders on the campaign trail 

'Really? I cannot believe, as you’re watching the rise of Donald Trump...' Hayes continued

'Well, you know, some people feel Donald Trump will bring the revolution immediately,' Sarandon said. 'If he gets in, then things will really explode.' 

When asked if she thinks that's 'dangerous' Sarandon said, 'It’s dangerous to think that we can continue the way we are with the militarized police force, with privatized prisons, with the death penalty, with the low minimum wage, threats to women’s rights and think you can’t do something huge to turn that around.'

This type of rhetoric has become more common among some Sanders supporters as he continues to trail Clinton in the delegate count. 

'Well, you know, some people feel Donald Trump will bring the revolution immediately,' Sarandon said. 'If he gets in, then things will really explode.'

What's concerning to Democratic Party officials though is that Sanders supporters might not vote at all in the general election if he doesn't get the nomination, and could contribute to a Republican win. 

And this isn't the first time that Sarandon has participated in this all-or-nothing kind of politics.

When George W Bush was running against Al Gore in the 2000 election, Sarandon was a supporter of third-party candidate Ralph Nader, who ended up taking some of the vote from Gore, leading to a Bush victory. 

Sarandon changed her tune four years later though, encouraging Nader not to run in a failed attempt to help John Kerry unseat Bush.