A top surrogate for Sen. Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE (I-Vt.) says she will not accept an offer to join the Green Party's presidential ticket.

"I'm going to keep fighting in the party, even though I'm disappointed," Nina Turner told Cleveland.com in an interview Monday afternoon.

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"I'm a Democrat, and that's worth fighting for."

Turner was one of Sanders’s most prominent surrogates during the primary battle against Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE. The former state senator resigned a top post at the state Democratic Party to join Sanders.

She had been offered a vice presidential slot by Jill Stein, who is considered the heavy favorite to win the Green Party's nomination at the party convention this week.

Stein is seeking to woo disaffected Sanders supporters into her corner. Her campaign is now polling in the low single digits.

Turner claims the Clinton campaign blocked her nominating speech for Sanders at last week's Democratic convention. She had expressed interest in considering Stein's offer.