Is Trump Bluffing on His Ground Game?

New York Times: “That’s the situation in which most Republican campaigns find themselves regarding the Trump operation a few weeks before the Iowa caucuses and the primary in New Hampshire. Mr. Trump’s campaign has boasted that it is doing things reporters aren’t aware of, and the size of his crowds is indisputable. Campaign workers have been harvesting email addresses from attendees at his rallies, and lawn signs for him abound throughout the early-voting states.”