TV ads are great for broadcasting, but voter turnout is about narrow-casting. And not all messengers are created equal.
One of the advantages and disadvantages of WCW had to deal with was being a member of Turner Broadcasting.
I was once very unpleasantly groped while I was broadcasting by a famous individual who shall remain nameless. When I told the staff afterwards what had happened, everybody thought it was amusing. There was a shrugged shoulder approach to the whole thing.