Kerry is hoping that an end to negative ads will not drive away any further voters — probably a good tactic, as the voters less likely to show up at polls are Democrats.
Also amusing:
“Kerry said America's middle classes had suffered from the huge tax cuts that Bush had presided over and which Democrats say mainly benefit the most wealthy.”
I'm sure the middle class is CONSTANTLY complaining about paying less in taxes. Even if other people are benefitting as well.