Young, bearded, a bit scruffy, a young man walked into a community organizing office in East Harlem, lugging a heavy bag. A little nervous, he said that his name was Melvin Howting, and that he worked for an environmental company in New Jersey and had a few questions about how to organize a union.

He wanted to know how to get higher wages.

And, oh yes, he had another question: If he formed a union, could his fellow workers join with the employer to shake down politicians for more money?

At this point, Rhea Byer-Ettinger, an organizer for Manhattan Together, felt her internal baloney detector go on red alert. “Beep, beep, beep,” she said. “I said to him: ‘Well, that’s not how we work. Tell me, why are you asking me about that?’ ”

This is the anatomy of a political sting.

Nothing this fellow said was true. Public records reveal that his real name is John M. Howting. He is active in the conservative movement and does not want to organize a union. His company — for which he built an elaborate Web site — and its officials do not exist. Ms. Byer-Ettinger suspects that he secretly recorded their conversation.