By election day this November, about $3.6 billion will have been spent on political television advertising, estimates Ken Goldstein, President of Kantar Media/CMAG which analyzes media spending. That number includes broadcast and cable for all races.
"We'll have over $3 billion spent on just spot, local television -- that's in all races from dog catcher to president," Goldstein said on CNN's "State of the Union" Sunday. "When you add in cable buys and national cable buys, that number is going to be more like $3.6 or $3.7 billion."
Goldstein quickly added: "And most of it is gonna to be negative in the presidential race."