Former Ohio state senator Nina Turner, a prominent figure in Bernie Sanders’ presidential campaign, has declined the offer to run as the Green Party’s vice presidential candidate because she said she wants to continue to fight for progressive ideals within the Democratic Party.

“I’m going to keep fighting in the party, even though I’m disappointed,” Turner said in a telephone interview with Cleveland.com. “I’m a Democrat, and that’s worth fighting for.”

Jill Stein, the presumptive Green Party presidential nominee, had reportedly offered Turner the position over the weekend after the rising star was barred from speaking at the Democratic National Convention. Last fall, Turner, a vocal critic of the establishment, left a top post within the Ohio Democratic Party to campaign for Sanders.

Speaking to reporters on Monday, Turner said she is going to focus her energy on advancing the progressive agenda put forth by the Sanders campaign. “What I really care about is making this progressive agenda more actionable,” she said. 

The Green Party announced later Monday that veteran human rights activist and organizer Ajamu Baraka will be joining Stein on the ticket.