Bill de Blasio now has the endorsement of not one, but two potential contenders for president.

Former Secretary of State Hillary Rodham Clinton, via a spokesman, said in a statement on Wednesday that she and former President Bill Clinton would back Mr. de Blasio in New York City’s mayoral race — hardly a surprise given that Mr. de Blasio was Mrs. Clinton’s campaign manager in her successful 2000 campaign for Senate.

The support from the Clintons came two days after Gov. Andrew M. Cuomo — who, like Mrs. Clinton, is believed to be mulling a run for president in 2016 — offered a full-throated endorsement of Mr. de Blasio during an event at City Hall. Mr. Cuomo served with Mr. de Blasio in the Clinton administration.

The Clintons did not exactly offer a shout-to-the-heavens style of endorsement: they announced their support in a 48-word, single-paragraph statement attributed to their respective spokesmen and released in a no-frills e-mail by the de Blasio campaign.

“Bill de Blasio has been a friend to both President Clinton and Secretary Clinton for many years,” the statement read. “They were proud to see him run a thoughtful, creative campaign about the issues, and they are behind him as he moves on to the general election.”