The Republican establishment is in a dither — who are all these tradesmen and petit bourgeoisie who are planning to vote for this Donald Trump fellow? Do such people really exist?

And if they do, how many of the great unwashed are actually going to vote for this person with the ?outer-borough accent?

We’re going to get answers to all these questions shortly, aren’t we? Not that anybody really has any idea what’s going to happen in Iowa tomorrow night.

The only thing we know for sure about Iowa is who the media are going to declare as the winner, even if he finishes a distant third.

The declared winner will be Marco Rubio, whom the media were shamelessly touting even before the debate Thursday. Marco Rubio, the RINO flavor of the month.

But that’s just the GOPe/National Review spin. In New Hampshire nine days from now, I predict Trump is going to enjoy the kind of evening Boston City Councilor Dapper O’Neil used to forecast for himself.

“They won’t be countin’ my votes,” the Dap would say. “They’ll be weighin’ ’em.”

And yet, the nominal leaders of the Granite State GOP don’t even know anybody who’s voting for this … this Trump parvenu?

Remember John Sununu, the one-time governor of New Hampshire and later Bush 41’s White House chief of staff? His son and namesake was a U.S. senator. Junior is now backing John Kasich, a clue as to just how far removed the Sununu family has drifted from the GOP grass roots.

A few days ago in New Hampshire, reporter Byron York ran into Mr. and Mrs. Sununu Sr. at an event and asked them if they personally knew anyone who supported Trump.

“They looked at each other for a minute, thinking, and finally said yes, there’s a guy down the street from them who does.”

But Sununu wasn’t the only GOP bigfoot York found who claimed not to know any Trump voters. Friday night, I asked U.S. Rep. Frank Guinta if he’d seen the story about Sununu.

“Yeah, and I didn’t know what to make of it,” he said. “I go to events and the only candidate anybody wants to talk about is Trump.”

It’s not just New Hampshire, either. Right now in Massachusetts, 3,000 new voters are registering ?every day.

These new voters are not Republicans. This week, the state had to send out 21,000 postcards to people who have registered as members of the “United Independent Party” — Evan Falchuk’s third party. The new voters saw the word “independent” and immediately checked the box.

They didn’t understand that the designation for independent is “unenrolled.” To prevent chaos on primary day, the state is warning members of the UIP they only have until Feb. 10 to re-register as “unenrolled.”

Here’s another of what Deval Patrick used to call “anecdotes.” Last week on my show, Ann Coulter told me she’d run into a billionaire at a cocktail party who expressed Sununu-like consternation about the Republican race.

“We’re all for Jeb Bush, of course,” she recounted the billionaire telling her. “But it’s the strangest thing — most of the ‘help’ appears to be for Trump. And they’re all Hispanics!”

Neither Sununu nor Ann Coulter’s billionaire saw the story about the roundup of the MS-13 illegals in Boston. Check out the nicknames of all of Jeb Bush’s valedictorians:

“Psycho … Violento … Terrible … Crazy … Muerto … Animal … Renegado … Violento (again) … Sangriento … Demento.”

I read all those names over the air Friday night. A texter from the 603 area code responded:

“The only nickname any of them should have is ?‘Deporto.’ ”

A Trump voter, I’m going to guess. And I’ll bet he’s never met John Sununu Sr., either.