Early voters are NOT available in the category of “undecided”. They all knew long time ago who they were going to vote for. Ads would have ZERO effect on them.
There are only less than 10% of voters still undecided. That is the only group available for pickings. These people are basically non-political people, which is why they are still undecided. I doubt if virulent attack Ads against Obama will bring them over to our side. And secondly, 7 weeks later on voting day, they won’t remember the Ad content.
Many early voters do not go and vote based on who they are voting for or if they are undecided. They are early voters because they are limited by time because of work or what have you. Or they simply do not want to wait in line.
Most do not wait until they have made a decision before they drive over to vote. They will make their decision on the other side of the curtain.
Early voting has already begun in many places. It is election day from now until November 6th.