Now Mayor de Blasio’s joined the chorus calling for the head of Board of Elections Commissioner Alan Schulkin — simply for privately (he thought) speaking his mind about voter fraud.

After a few drinks — and to an undercover reporter for James O’Keefe’s Project Veritas.

Yes, Schulkin’s remarks are embarrassing to his fellow Democrats, who inevitably insist that voter fraud is a myth. But it’s not like his cocktail-party conversation actually went beyond common gossip.

“Certain neighborhoods in particular, they bus people around to vote,” he says on the tape. “They put them in a bus and go poll site to poll site.” Asked if he meant black and Hispanic neighborhoods, he nods: “Yeah, and Chinese, too.”

But it’s chatter at a party, not testimony.

And some of it is just common sense, such as his rejection of most Democrats’ resistance to voter-ID laws: “You know, I don’t think it’s too much to ask somebody to show some kind of an ID,” he says. “You go into a building, you have to show them your ID.”

And: “People think [opposing voter-ID laws is] a liberal thing to do, but I take my vote seriously, and I don’t want 10 other people coming in negating my vote by voting for the other candidate when they aren’t even registered voters.”

A guy whose job involves trying to keep elections clean vents at a party about what he sees as a threat to clean elections. How is this a firing offense?

City Democrats would be wise to just laugh the whole thing off. After all, if they take away Alan Schulkin’s job now, lots of people will conclude he was punished for telling the truth.