"You have to do a few things when you run for office in Texas," says one of Rick Perry's allies. "You have to debate. You have to release your tax returns. And you have to say you won't raise taxes." Bill White will surely debate the governor before November's general election, but at the moment he hasn't done the other two. The former probably won't sink him, but the latter could — by declining to drink the no-new-taxes potion, he's handing his opponent a weapon to use against him. Unless, of course, he's successful at changing the way the argument goes.