Today is Election Day. I will be a very happy man if I am never unfortunate enough to watch another political ad. If I believed half of the ads I would not vote for any of the candidates.
Why are the ads all negative? Why don’t the candidates explain their plans for America if they win? The answer is US. We have met the enemy and he is us – Pogo
The answer is Negative Ads work. They suppress the vote and affect those that do vote. Negative ads work better for Republicans than for Democrats, and better for men than for women; unfortunately, negative ads also work better in general than positive ones, so attacking has become nearly universal. – See Going Negative: How Political Advertisements Shrink and Polarize the Electorate