Shock-rock star Alice Cooper, who says he bought his first car years ago from embattled Arizona Gov. Evan Mecham, then an auto dealer, claims he's running for governor in his home state. "I'm definitely a write-in candidate," said the 39-year-old singer. "I'm a registered voter. I represent the Wild Party, and I even have a campaign slogan: 'Alice Cooper--A troubled man for troubled times.' " Cooper ends the American leg of a yearlong tour Saturday night in Phoenix.