When to use Positive/Negative ads?

Posted on Thursday, August 19, 2004
If there's an issue where both candidates have the same stance, should I use a positive or a negative ad?

For example, let's say that my candidate (Kerry) and the other candidate (Bush) are both "Pro New Jobs". When would I want to run a "Kerry Supports New Jobs" ad versus a "Bush Opposes New Jobs" ad?