WILL COLLIER LOOKS AT OUTMIGRATION FROM NEW YORK, and suggests an explanation that the New York Times neglected:

More interesting, however, is what the Times can’t bring itself to say in the story: there isn’t a single mention of New York’s high taxes and rampant government regulatory regimes, or the relative lack therof in the (er, “red”) Sun Belt states. Was it just too much trouble for the Times to admit that jobs (and thus people) are leaving for places that are more amenable to, you know, employers?

Apparently so.