WESTERVILLE, Ohio — The Squad has Bernie’s back.

Three of the four famous freshman congresswomen — Reps. Alexandria Ocasio-Cortez, Ilhan Omar and Rashida Tlaib — are endorsing Vermont Sen. Bernie Sanders in his 2020 bid for the Democratic nomination.

Ocasio-Cortez will appear as a much-hyped “special guest” at a Sanders rally in New York City on Saturday, sources in the campaign confirmed to VICE News Tuesday night. After that news broke, Omar announced her endorsement of Sanders, although she won’t appear at the rally. Tlaib will also back the campaign soon.

Former Ohio State Sen. Nina Turner, national co-chair of the Sanders campaign, confirmed Tuesday night that Ocasio-Cortez will be the special guest at the Queens rally — dubbed “Bernie’s Back.” It’s the first rally Sanders has held since his campaign revealed that he suffered a heart attack a few weeks ago while on the campaign trail.

Sanders' progressive history has enabled candidates like Ocasio-Cortez to be unabashedly progressive on the national stage, Turner said. Now, Ocasio-Cortez can return the favor by lending Sanders some millennial energy.

"For all the haters who say that he's not a feminist enough, all the haters who say he's too old, she brings that youthfulness with her to complement what he already did in 2016," she told VICE News after the Democratic debate in Ohio. "He already brings the thunder... This just takes him to the next level."

The liberal congresswomen, and Ocasio-Cortez especially, were considered prized endorsements and represent a well-timed win for Sanders, who has slipped to a consistent third place in the polls.

In announcing her endorsement, Omar emphasized Sanders’ commitment to fighting for working-class voters.

“Bernie is leading a working-class movement to defeat Donald Trump that transcends generation, ethnicity, and geography,” Omar said on Twitter. “I know this from experience — I’ve worked with him up close on bold, progressive reforms. I’ve seen the values that motivate his fight for progress.”

It's not yet clear if the fourth member of the Squad, Massachusetts Rep. Ayanna Pressley, who hails from the same state as Sen. Elizabeth Warren, will endorse Sanders. She’s noted in the past that the four members don’t always agree.

“We are not a monolith,” she said in August. “We don’t land in the same place on every vote. We are each our own people.”

But the Sanders campaign left the door open for Pressley to back them eventually.

When asked why the whole squad isn’t endorsing, Turner said, “Yet.”