Politics: Negative ads and the undecided voter

There you have the race right now.

About 46% for the President and 45% for his opponent.

Baring some unforeseen event, that is pretty much going to hold steady.

The elections is in the hands of 9% of the voters who are undecided.

One can produce the most positive rose-colored ad for your favorite candidate and his opponents will not be swayed.  Likewise, the most negative ominous ad, outrageous or factual, will not sway the supporter away from his/her support.

Nonetheless, I do hope there will be some positive ads along the way so the undecided voter doesn't base her/his choice exclusively on fear or disdain.