Rep. Alexandria Ocasio-Cortez Alexandria Ocasio-CortezOn The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline McCarthy says there will be a peaceful transition if Biden wins Anxious Democrats amp up pressure for vote on COVID-19 aid MORE (D-N.Y.) announced Tuesday that she is endorsing Jessica Cisneros in her Democratic primary challenge to Texas Rep. Henry Cuellar.

“The people of South Texas deserve a Democrat like Jessica who is going to fight for real people, not big corporate donors like the Koch Brothers, GEO Group, and Exxon,” the first-year progressive representative said in a statement sent by the Cisneros campaign.

“When Jessica is elected, not only will I no longer be the youngest person in Congress — I’ll have a strong new ally in the fight for Medicare for All, getting corporate money out of politics, and fixing our broken immigration system,” Ocasio-Cortez added.

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Cisneros, 26, is an immigration and human rights attorney who was born and raised in Laredo, a town on the U.S.-Mexico border.

She said she is “honored” to have Ocasio-Cortez’s support.

“Though the Bronx and South Texas are worlds apart, both deserve leaders who will stand up to big corporate interests to fight for a living wage and health care for every American,” she said in the announcement.

Justice Democrats, the liberal advocacy group that helped Ocasio-Cortez in her successful primary bid against 10-term incumbent Rep. Joseph Crowley (D-N.Y.) last year, endorsed Cisneros shortly after the launch of her campaign in June.

Cuellar, who has been in office since 2005, has been a top target for Justice Democrats, which has slammed Cuellar for his record.

Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (Mass.), a top progressive Democratic presidential candidate, also announced her support for Cisneros last month.

Cuellar’s campaign spokesman, Colin Strother, bushed off the high-profile endorsements for Cisneros.

“Our opponent continues to focus on out-of-state endorsements, but we are squarely focused on continuing to build support in the district,” Strother told The Hill.

“The strength of our campaign is that we are powered by the working people of the 28th District of Texas, not celebrities. Those are the people that will decide this election.”