Bernie Sanders’ campaign on Monday condemned New York’s unprecedented decision to cancel its June 23 Democratic primary — calling for the Empire State to lose its delegates if the move isn’t overturned.

In an email to supporters, senior advisor Jeff Weaver said the decision by the state Board of Elections was an “outrage” and a “blow to American democracy,” and called for the Democratic National Committee to overrule it.

“Just last week Vice President Biden warned the American people that President Trump could use the current crisis as an excuse to postpone the November election,” Weaver wrote.

“Well, he now has a precedent thanks to New York state,” he added.

The campaign is particularly affronted by the decision because, while they threw in the towel on their White House bid earlier this month, Sanders said he would remain on the ballot to collect delegates which he would use to exert influence at the convention in August.

Jay Jacobs, New York State Democratic Party chairman, told The Post the Sanders move was a “mistake” which would only further divide the party.

The state Board of Elections said they were concerned about the spread of the coronavirus and called the primary a moot point with former veep Joe Biden the presumptive nominee. With the primary cancelled, more than 274 delegates previously up for grabs will now likely be ceded to Biden.

The Sanders camp called for retribution, with many of his surrogates speculating on Twitter that the move was designed to punish the Democratic outsider.

“New York has clearly violated its approved delegate selection plan,” Weaver wrote.

“If this is not remedied, New York should lose all its delegates to the 2020 Democratic National Convention and there should be a broader review by the Democratic Party of New York’s checkered pattern of voter disenfranchisement.”

Gov. Andrew Cuomo, who on Friday directed the BOE to mail all New Yorkers applications for absentee ballots, declined to weigh in on the call.

The DNC has also yet to comment on New York’s decision.