Washington (CNN) Rep.-elect Alexandria Ocasio-Cortez on Wednesday backed House Democratic leader Nancy Pelosi to become House speaker next year once the party reclaims the majority in the chamber, so long as Pelosi "remains the most progressive candidate for speaker," a clear sign of support from one of the Democratic Party's rising liberal stars.

"All the challenges to Leader Pelosi are coming from her right, in an apparent effort to make the party even more conservative and bent toward corporate interests. Hard pass," the New York Democrat tweeted . "So long as Leader Pelosi remains the most progressive candidate for Speaker, she can count on my support."

Ocasio-Cortez, a self-described democratic-socialist, has signaled she was open to backing Pelosi but her series of tweets Wednesday amounted to her strongest and clearest public statements to date supporting the Calfornia Democrat's would-be return to wield the speaker's gavel.

"I think she's a candidate to consider," Ocasio-Cortez said in June. "And I think when it comes to the leadership of the party that's a conversation that I have, you know, once I'm an elected member of Congress."

And more recently, Ocasio-Cortez told Vice News last week that there's "an opening" to supporting Pelosi.

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