Susan Sarandon, an Oscar-winning actress and ardent supporter of Sen. Bernie Sanders (I-VT), was unable to say in a Monday night interview if she would vote for Hillary Clinton if her candidate loses the Democratic nomination.

MSNBC’s Chris Hayes asked Sarandon about the contingent of Sanders supporters who say they would stay home if Clinton is the nominee.

“I think Bernie would probably encourage people [to vote for Clinton] because he doesn’t have any ego in this thing,” Sarandon said. “But I think a lot of people are, ‘Sorry, I just can’t bring myself to do that.'”

When Hayes about her views specifically, Sarandon said, “I don’t know. I’m going to see what happens.”

Hayes said he couldn’t believe that, but Sarandon replied, “Some people believe Donald Trump will bring about the revolution immediately” if he wins.

Sarandon also said Sanders is a once-in-a-lifetime candidate for her.

“I want to be on the right of history. This is a shot we’re not going to have in my lifetime, to have a candidate who is so morally consistent. Who makes decisions whose judgment proves to be true, but does it at a time when it’s not popular, when it’s comfortable,” Sarandon said.

“To have a guy that’s that consistent, that clean, it’s not going to happen again,” she added.

Watch the interview via MSNBC: