Don't wear your favorite Barack Obama T-shirt or your shiny John McCain campaign button Nov. 4: You might get hassled at the polls.

An obscure, seldom-enforced state law bars anyone from wearing political buttons and other campaign paraphernalia within "a 100-foot radial measured from the entrances of the voting booth."

With the election just over a month away, the law is suddenly gaining notice: an email begging potential Obama voters to "PLEASE, PLEASE, PLEASE" leave T-shirts...