David Carney, a veteran Republican strategist here, has received six phone calls at his Hancock, N.H., home from Donald J. Trump’s campaign the last few days. But five came after the Trump volunteers were told that the occupants were backing another candidate: Mr. Carney’s wife is Carly Fiorina’s campaign director in the state…

“They have a lot of volunteers and they’re proud about that, but volunteers is not a ground game,” said Mr. Carney, who was the top strategist for Rick Perry’s 2012 presidential race and has been deeply involved in studies of how campaigns use information about voters. “They’re basically just picking up the phone book.”…

The question is how much better the turnout operation will be in New Hampshire. Three people briefed on internal discussions in the campaign said that repeated requests from employees in early nominating states for a greater focus on analyzing data had gone unanswered. And though the campaign started to put together a data operation last fall, it has had no direct mail effort — a fixture of Republican primary campaigns in New Hampshire.

Asked about those accounts, Corey Lewandowski, Mr. Trump’s campaign manager, insisted they were untrue. “I know the budget process at the campaign, and I can’t think of three people who would have knowledge of the decision rights for this type of transaction,” he said in an interview. “Trump has never said no to a funding request.”