You can state your opinion as a candidate, of course; indeed, you should. But what you say must be precise, leaving no room for people to misinterpret or take unintended offense. In short: Make sure what you say, is exactly what you mean. And don’t say it, if you don’t mean it. If you find yourself holding a press conference after a debate to explain again what you were trying to say, you already have a problem. Is that so hard to understand?