Even Mayor Bill de Blasio’s most loyal allies aren’t sold on his long-odds presidential bid.

Leaders of an ultra-orthodox Jewish sect in Brooklyn asked their followers to donate to the mayor’s struggling 2020 campaign on Aug. 6.

Three weeks later they’ve recruited just 670 contributors — a far cry from their goal of 10,000.

“The mayor has personally asked to support him,” reads the pitch, translated from Yiddish, on the fundraising website ActBlue.

The unsigned appeal came from leaders of the Williamsburg, Brooklyn Satmar community via a WhatsApp message, according to sources.

The Satmar leaders asked for donations as small as a dollar to help de Blasio meet the 130,000-donor threshold for the September debate by the Aug. 28 deadline.

Their pitch brought in just $868.

De Blasio ultimately didn’t make the cut for the debate, but he’s vowed to stay on the campaign trail.

Campaign spokeswoman Jaclyn Rothenberg said the mayor’s looking forward to upcoming stops in early primary states including Nevada for a labor gathering and New Hampshire for the Democratic party convention.

Political consultant Menashe Shapiro explained the dismal result of the Satmar’s fundraising drive.

“Like all communities the end of August is still the end of August and a lot of people are away,” Shaprio said, adding, “Coupled with that is the fact that it’s not clear what they are getting” in exchange for donations, Shapiro said.

In 2017, federal prosecutors and FBI agents probed the mayor’s ties to a leading Satmar rabbi named Moishe Indig who had hosted a fundraiser for de Blasio in 2013. Investigators were looking at whether Indig received any special treatment from city officials as a result of his largesse. Prosecutors eventually declined to charge de Blasio or Indig.

“It’s not like they believe in de Blasio’s message. It’s not like they believe in de Blasio’s progressive policies,” Shapiro said of the traditionally politically conservative group.

His ties to the Satmar sect go back decades.

“The mayor has a relationship going back with the Hasidic community since he managed Hillary Clinton’s senate campaign” in 1999, said former New York City Councilman David Greenfield, who now leads the Met Council on Jewish poverty.

“He literally brokered the détente between Hillary’s campaign and the Hasidic community and that was before he ran for City Council. So he has a deep relationship with this community and he certainly has a lot of friends and there’s a general sentiment that, ‘The guy’s a friend and if he’s only asking for a dollar why not be helpful?’” Greenfield said.