Graduate student poll

This excerpt from a story on economics raised my eyebrows:

The latest poll involved graduate students at the University of Chicago, Columbia, Harvard, Princeton, Yale, Stanford and the Massachusetts Institute of Technology. Among its results were that 10 percent of the first-year students considered themselves politically conservative, but that percentage rose to 23 percent by the fourth or fifth year.

Seems like a good argument for making kids learn about economics in high school!