[GSlob]

According to the article, TV political advertising in 2004 ($1.6B+) was more than double the 2000 number ($771M). American GNP has not doubled from 2000 to 2004, but grew much slower. If the trend continues, one could see the whole GNP being spent on electoral advertising, and later the country may even go in debt to finance it.
This, of course, is reductuo ad absurdum. but still there must be some [saturation] limit.

[Clemenza]

All the advertising money spent in Ohio alone must have done wonders for the local economy.