not allow the cost of your advertising to be treated as a business expense. Worse still, the television networks will not accept ‘advocacy’ advertising. So you have to use local spots, market by market. You will probably end up with a combination of local television, the Washington Post, the New York Times, and some upper-crust magazines. Most advocacy campaigns are too little and too late. They are addressed to the wrong audience, lack a defined purpose, don’t go on long enough, are weak in craftsmanship, and advocate a hopeless cause. So they fail. Advocacy advertising is not a job for beginners.
Ogilvy on Advertising Page 184 Page 186