This explains it, I think....

From an Op-Ed by a Hillary supporter. Money quote:
During the campaign, we scoffed at events like this, mostly because we were not capable of producing them.
"This" is Obama's acceptance speech at an outdoor stadium attended by 70-80,000 people and watched by 38 million.

I think this explains why the McCain camp has substituted 'scoffing' for political discourse. In their wildest dreams, they couldn't produce an event like this. They don't have the right candidate.