ASSOCIATED PRESS/Seth Wenig Rep. Alexandria Ocasio-Cortez (D-N.Y.) speaks in New York City in April. Her endorsement of Tiffany Cabán for Queens district attorney is her second endorsement since taking office.

Rep. Alexandria Ocasio-Cortez (D-N.Y.) endorsed Tiffany Cabán’s bid for district attorney of Queens on Wednesday, lending national heft to an underdog candidate trying to bring sweeping criminal justice reform to New York City’s second largest borough. “Our criminal justice system needs to change. New Yorkers deserve a seat at the table, and a champion who will fight to realign our priorities towards equal treatment under the law,” Ocasio-Cortez said in a statement. “If Tiffany Cabán wins, things are going to change.” Although Queens, a diverse borough of 2.3 million, is reliably Democratic, its DA’s office remains a vestige of tough-on-crime policies that other New York boroughs, to say nothing of other cities, have bypassed. When Richard Brown, who served virtually uncontested as Queens DA for over 27 years, announced he would not seek re-election in January, it set off a scramble to succeed him. (Brown, 86, died earlier this month of complications from Parkinson’s disease, weeks shy of his scheduled exit.) Seven candidates are competing for the Democratic DA nomination in a June 25 primary ― all of them promising, to one degree or another, to relax the hard-line practices that Brown first implemented during a period of high crime. In such solidly Democratic territory, the general election is almost certain to be a formality. But Cabán, a queer Latina public defense attorney, is campaigning on what would be the cleanest break with the office’s past and the aging political machine that sustains it.

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She has said she would bar the use of cash bail for all crimes, and would decline to prosecute sex workers and their clients, as well as low-level offenses like marijuana possession and subway fare evasion. She promises to focus instead on predatory lenders, exploitative employers and pharmaceutical companies that have contributed to the opioid epidemic. In addition to her ambitious policy proposals, Cabán, who at 31 is a contemporary of the 29-year-old Ocasio-Cortez, is taking on some of the most powerful figures in Queens politics. Her most formidable rival in the DA race is Queens Borough President Melinda Katz, an ally of former Rep. Joseph Crowley (D-N.Y.), whom Ocasio-Cortez ousted in a Democratic primary last year. Katz has the endorsement of Rep. Gregory Meeks (D-N.Y.), Crowley’s successor as chair of the Queens County Democratic Party; Reps. Carolyn Maloney and Tom Suozzi (D-N.Y.); and New York State Assembly Speaker Carl Heastie (D). The other contenders for the top law enforcement spot are New York City Councilman Rory Lancman (D); Mina Malik, a former Queens and Brooklyn prosecutor and deputy attorney general for the District of Columbia; Greg Lasak, a former judge and prosecutor in Brown’s office; attorney Betty Lugo; and Jose Nieves, a former prosecutor in the New York attorney general’s office. For her part, Cabán already has the backing of some of the city’s ascendant progressive players and organizations, including state Sen. Jessica Ramos (D), City Councilman Jimmy Van Bramer, the New York City Democratic Socialists of America, the New York Working Families Party and the Make the Road Action Fund. But Ocasio-Cortez brings to the table unparalleled influence as a social media star and grassroots fundraiser. She posted a fundraising appeal for Cabán on Facebook on Wednesday afternoon and plans to tap her email list for money later this week. “Alexandria Ocasio-Cortez is a progressive champion, a fearless warrior for working people, and an inspiration for women of color running for office across the country,” Cabán said in a statement. “I’m honored to have her endorsement.”

Cabán for Queens/Facebook Tiffany Cabán, left, stands with New York state Sen. Jessica Ramos (D), who has endorsed her candidacy.