Polling: a look inside the machinery of public opinion surveys

It's dinner time in America. Somewhere parents and children sit down together to eat, to talk through their respective days, to enjoy precious shared time. The phone rings. "Hi, I'm Michael Jablonski," says a man whose name is no doubt unfamiliar to the woman who answers, "and I'm calling about a Gallup…

[African-American woman working in an office, via Shutterstock.com.]