Rep. Alexandria Ocasio-Cortez Alexandria Ocasio-CortezThe Memo: Dems face balancing act on SCOTUS fight Ocasio-Cortez hits back at Marjorie Taylor Greene over 'dumb blonde' joke on Twitter Ocasio-Cortez to voters: Tell McConnell 'he is playing with fire' with Ginsburg's seat MORE (D-N.Y.) said late on Wednesday that she will vote for presumptive Democratic presidential nominee and former Vice President Joe Biden Joe BidenJoe Biden looks to expand election battleground into Trump country Trump puts Supreme Court fight at center of Ohio rally Special counsel investigating DeVos for potential Hatch Act violation: report MORE in the coming November election.

The moment came during the congresswoman’s livestream discussion with rapper Fat Joe on Instagram on Wednesday night.

At the start of the roughly hourlong discussion on Wednesday, the rapper told her: “It’s three things you can do: You can vote for Trump, you can vote for Biden or you can not vote at all. Who you going to vote for?”

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“In November, I’m going to be voting for Joe Biden,” she responded. “But that’s what I’m going to be doing.”

“So, is this the first time you said you voting for Biden?” Fat Joe asked.

“I mean, I’ve been saying this whole time that we got to support the Democratic nominee,” she said, but she added: “This is the time where I’m saying it declaratively like this.”

Ocasio-Cortez had previously been a surrogate for Sen. Bernie Sanders Bernie SandersJacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee Trump campaign plays up Biden's skills ahead of Cleveland debate: 'He's actually quite good' Young voters backing Biden by 2:1 margin: poll MORE (I-Vt.) before he ended his presidential campaign late last month and announced he would be endorsing his former rival last week.

"We need you in the White House. I will do all that I can to see that that happens, Joe," Sanders said at the time.

"Today, I am asking all Americans — I'm asking every Democrat, I'm asking every independent, I'm asking a lot of Republicans — to come together in this campaign to support your candidacy, which I endorse," Sanders added.

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Days after his endorsement, Ocasio-Cortez, who said she would like to see the former vice president take a more progressive stance on certain issues, was reluctant to say in an interview whether she planned to back Biden in the coming election.

“We’ll see,” Ocasio-Cortez said when pressed about endorsing the former vice president then. “We’re having conversations with Biden’s team and trying to figure out what some of these policy conversations will look like.”

“I would love to see the vice president clarify and deepen his policy stances on certain issues. But aside from that, I think it’s incredibly important we support the Democratic nominee in November,” she added at the time.