A Super PAC backing the re-election of Mayor Eric Adams is phoning tens of thousands of voters to tell them rival ex-Gov. Andrew Cuomo is a “sore loser” and that only Hizzoner can beat socialist Zohran Mamdani.

“Andrew Cuomo is not only a loser — he is a sore loser — which is worse, and nobody likes a sore loser, the public-safety advocacy group Protect the Protectors says in its calls to 75,000 Big Apple voters.

“He lost badly to the dangerous Mamdani in the primary, and Mamdani knows how to and will beat him again,” says the Super PAC, launched by veteran campaign strategist Hank Sheinkopf.

“He lost his governorship and had to resign because of sexual harassment, which shows his disrespect for decent family values,” the group insists of Cuomo, who has denied the allegations against him.

“Mayor Adams has grown in his job and is a proven winner as a police captain, a borough president and now mayor,” the PAC adds.

Cuomo was shockingly trounced by Mamdani, a far-left Queens state assemblyman, in the mayoral Democratic primary race in June.

The Democratic Adams has been running for re-election as an independent, so he dodged the primary match-up.

But the ex-gov has refused to bow out of the general election Nov. 4 despite getting slammed by Mamdani, opting to now run as an independent alongside Adams.

The Dems face GOP candidate Curtis Sliwa.

The Super PAC says Adams — whose popularity has plummeted amid corruption probes — will win with a “comeback campaign, which New Yorkers love, and beat the dangerous Mamdani which Cuomo the sore loser can never do.”

The live calls are being made to voters in state Assembly districts where Cuomo fared well in the Democratic primary, though he lost overall to Mamdani.

In a separate script, Protect the Protectors seeks to soften up Republicans to back Adams instead of Sliwa, too.

The group praises Sliwa, the Guardian Angels founder and GOP mayoral nominee, as a “great New Yorker” who cares about the city.

But it says President Trump, the titular head of the Republican Party, “doesn’t want an empty moral victory” with Sliwa, whose votes will only fracture the anti-Mamdani crowd and assure the socialist becomes mayor.

“The president would love to see Republicans send a real message of winning and help defeat the dangerous Mamdani by getting behind the only candidate who can win, Mayor Adams,” the voters are told.

“The president knows that he and the mayor don’t always agree. He also knows Mayor Adams will do the right thing for New York and will be responsible to work with.”

“Cuomo is a loser who Mamdani already beat badly. Please remember the president grew up here and loves New York, and when Mayor Adams wins, we all know the president would want to do great things for New York!”

Sheinkopf told The Post said Cuomo can’t sell himself as the law-and-order alternative to Mamdani because he approved the state’s unpopular cashless bail law as governor while his appointees on the parole board have let loose convicted cop-killers.

A third series of phone calls will be made by an issue-oriented affiliated group that stops short of saying who to vote or against.

The first run of live calls will cost about $75,000 and could double to $150,000 as more donations come in, Sheinkopf said.

The Cuomo campaign dismissed Adams as the real loser saying his voter support is in the single digits in the latest poll.

“Is anyone really surprised that the mayor, who is polling in the single digits, and his band of unindicted co-conspirators are playing gutter politics?” said Cuomo campaign spokesman Richard Azzopardi.

A Gotham poll released Tuesday found Mamdani the mayoral frontrunner with 41.8% support from voters for the Nov. 4 general election, followed by Cuomo with 23.4%, Sliwa 16.5% and Adams 8.8%.

In a statement, the Sliwa campaign said, “Eric Adams’ campaign is a mess.

“Just look at the latest polls — Curtis Sliwa is trouncing him. Desperate candidates do desperate things.

“While Adams flails, Curtis is focused on how he will be the best mayor this city has seen in a generation. Adams should try doing the same.”

Sheinkopf, who has close ties to law-enforcement unions, said his ultimate goal is to make 2 million pro-Adams calls and knock on 2 million household doors by Election Day, which would require millions of dollars in donations.

He briefly worked for a pro-Cuomo group during the Democratic primary.