Queens district attorney candidate Tiffany Caban speaks to reporters outside her polling place in the Queens borough of New York on Tuesday. AP Photo: Seth Wenig

Tiffany Cabán still held a narrow lead in the Democratic primary for Queens district attorney Thursday, as her opponent showed no signs of conceding the race.

Cabán, a 31-year-old public defender, won 39.6% of the vote among Queens Democrats and led Queens Borough president Melinda Katz by 1,090 votes, or a margin of 1.3%, according to unofficial results from the city's Board of Elections.

Though Cabán has claimed victory, the race remained too close to call by the Associated Press on Thursday afternoon. Katz has said that she would pursue a recount, and has yet to concede the race. Katz's campaign did not respond to calls requesting comment on her plans.

The New York Daily News reported Wednesday that there were still 6,337 uncounted paper ballots, including 3,556 absentee and military ballots from Democrats and 2,781 affidavit ballots from both parties that still need to be sorted. According to the Daily News, paper ballots can't be counted until July 3.

Speaking to reporters Wednesday, Cabán said she was “very, very confident” that she would prevail when the results became final.

“I spoke to my team, and we think that once it's counted the margins will still be close, but the decision's gonna hold,” she said, according to an audio recording provided to the New York Law Journal.

Cabán said she had not yet spoken to Katz. Cabán's campaign did not return calls Thursday seeking further comment for this story.

A political upstart, Cabán ran on a progressive platform of criminal justice reform, pulling high-profile support from U.S. Rep. Alexandria Ocasio-Cortez, D-New York, who represents part of Queens, as well as Philadelphia District Attorney Larry Krasner. Two leading presidential hopefuls running for the Democratic nomination—Sens. Bernie Sanders, I-Vermont, and Elizabeth Warren, D-Massachusetts—also endorsed her campaign.

Among her proposals, Cabán said she would fully decriminalize sex work, eliminate cash bail for any offense and prosecute Immigration and Customs Enforcement agents who exceed their authority to detain undocumented immigrants in the borough. She also advocated closing Rikers Island without constructing new jails, pushing instead for measures to decrease the overall rate of incarceration.

If elected, Cabán would be the first openly gay, Latina and first woman to serve as district attorney in the country's 11th-largest county by population.

Katz, meanwhile, ran with her own set of endorsements from New York party leaders, including Gov. Andrew Cuomo, U.S. Rep. Gregory Meeks, D-New York, the Queens Democratic Party chair, and the four major unions in New York City politics.

During the campaign, she pledged not to prosecute low-level marijuana offenses and supported not prosecuting sex work, instead focusing on traffickers, pimps and those who solicit them. She also vowed to crack down on hate crimes and gun violence.

The Republican candidate, Ozone Park attorney Daniel Kogan, is expected to run against the Democratic nominee in the general election. However, the GOP has not won a Queens DA race since 1920, and the Democrat would be expected to win easily.

Thomas Oliva, president of the Latino Lawyers Association of Queens County, said that Cabán, like Ocasio-Cortez, ran her campaign largely outside of the entrenched Queens political apparatus, which allowed her to connect with disaffected voters in one of the cities most diverse areas.

“We find this symptomatic of what party politics in Queens has been over the past few years,” Oliva said.

“I think she was tapping into the viewpoint of AOC—people have been marginalized; they haven't been represented,” he said.