“None of us thought we were at 13 percent,” the person said. “We can’t be in fourth place. That just cannot be right.”

But it was right. And it confirmed what rival campaigns had whispered for months — Biden wasn’t inspiring Iowa voters and his support was inch-deep…

“We had precinct captains who didn’t know how to run a caucus. And a few didn’t even show. We lost friggin’ people on the second ballot of voting in the caucus. Someone’s head had to roll,” said a top-level Biden campaign staffer Wednesday…

“It was a cluster-f—” said one. “A shit show,” said another. “A f—ing disaster,” said a third.

Questions swirled among staffers and donors over whether a higher-level staffing overhaul was in order, pointing to both campaign manager Greg Schultz and Pete Kavanaugh, assistant campaign manager of states, as the ultimate authorities in Iowa.