Sen. Dianne Feinstein, D-Calif., cautioned Thursday that “people die, accidents happen” when the government shuts down, as it is poised to partially shut down Friday night if Congress doesn’t pass a government spending bill. It was her second shift in position on the bill in just one day.

“Shutting down the government is a very serious thing. People die, accidents happen,” Feinstein told CNN. “You don’t know. Necessary functions can cease. There is no specific list you can look at and make a judgment: ‘Well everything is going to be just fine.’ You can’t make that judgment. So, I think it’s a last resort. And I’m really hopeful we don’t get to it.”

Feinstein told CNN she hadn’t yet decided whether she will vote for the short-term spending bill unveiled by congressional Republicans earlier this week. The stopgap measure funds the government until Feb. 16 and reauthorizes the Children’s Health Insurance Program for six years.

“I don’t know how I would vote right now on a CR, OK?” the California Democrat said.

But Feinstein’s uncertainty about whether she’ll back the legislation stands in contrast to a statement her office issued earlier Thursday stating Feinstein is opposed to the bill.

“I said in December that I wouldn’t vote for a CR without the Dream Act, and I won’t do so now,” she said in a statement.

That itself was a change from how Feinstein sounded on Wednesday, when she said she would vote for a continuing resolution if it was necessary.

The government spending bill from Republican leadership does not include a measure to address Dreamers, as Senate Democrats had pushed for it to.

Democrats have signaled they have enough votes to block the short-term spending bill from passing, making the possibility of partial government shutdown more likely.