Actress Susan Sarandon said she's still "not convinced" she should vote for presumptive Democratic presidential nominee Hillary Clinton.

"I'm not convinced. I'm not with her," Sarandon tweeted Tuesday.

Sarandon has been a vocal supporter of Sen. Bernie Sanders (I-Vt.) throughout the Democratic presidential primary. In March, she said she didn't know if she would vote for Clinton over presumptive Republican presidential nominee Donald Trump.

"I’m going to see what happens," Sarandon said.

Jean-Paul Pelissier / Reuters Actress Susan Sarandon poses ahead of a debate "Kering Women in Motion" during the 69th Cannes Film Festival in Cannes, France, May 15, 2016.

While Sanders' campaign maintains he is still "an active candidate" and he has yet to formally endorse Clinton, the senator has said he will vote for her in the general election.

“We do not need a president whose cornerstone of his campaign is bigotry, who is insulting Mexicans and Latinos and Muslims and women, who does not believe in the reality of climate change,” Sanders said, referring to Trump.