Mayoral contender Christine Quinn, the race's only female candidate, Monday received the endorsement of a prominent feminist activism group, NOW-NYC.

The National Organization for Women's New York City chapter predicted Quinn would be "the best mayor this city has ever had."

One of her rivals in the race, Comptroller John Liu, meanwhile, received backing from NOW's Brooklyn-Queens Chapter Political Action Committee, he announced Monday.

That chapter's president, Shirley Ranz, in a statement said Liu fights against sex trafficking and for equal pay.

Sonia Ossorio, president of NOW's citywide chapter, said at a news conference in front of City Hall that the endorsement for Quinn comes due to the City Council speaker's record on women's issues.

"Make no mistake, the National Organization for Women endorses the best person for the job, man or woman," Ossorio said, adding, "And we are so thrilled that in this case, in this race, the best candidate happens to be a woman."

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Quinn protects reproductive rights, encourages women's economic empowerment and combats violence against women, Ossorio said.

Quinn would be New York City's first female and first openly gay mayor, if elected.

Quinn said she fought anti-choice groups that set up fraudulent pregnancy care centers and helped to pass laws that guaranteed emergency contraception for rape victims.

"We're going to have the first woman mayor in the City of New York," Quinn said. "And what that is going to show is what we know: That voters vote for the best candidate."