Some people really does have no business in voting.
But again, your primary complaint here should be about those shallow voters, not the advertisers. If you believe that some voters care so little about political outcomes that they are willing to sell their political beliefs to the highest advertising bidder, you should believe that such folks have no business voting! After all, preventing some folks from directly buying political ads may have little net effect – those folks may buy ads indirectly, or find other ways to buy voter beliefs. The key problem is that some voters care way too little about political outcomes.
via Overcoming Bias : Microecon of Media.