For its part, the Romney campaign released a Virginia-focused "didn't build that" web ad that also references the misleading "it worked" rhetoric. And the following TV ad from Romney suggests that Obama doesn't care about Florida's economy (the scope and size of the ad buy is unknown):
NBC's First Read has a solid rundown of ad spending so far:
While it’s technically correct that the Obama campaign is outspending the Romney campaign in TV advertising in the battleground states, you can’t say the same thing when adding all the outside groups.
Right now, Team Romney — the campaign, the RNC, and all the GOP-leaning outside groups — is outspending Team Obama (campaign, DNC, outside groups) this week by a nearly 2-to-1 margin, $25 million to $14 million. That $25 million, in fact, is more than we’ve seen from one side during any other week this cycle. Here’s the full breakdown on this week’s ad spending (from July 30 to Aug. 5), according to data from SMG Delta: Obama $12.8 million, Crossroads GPS $9.7 million, Romney $8.1 million, Restore Our Future $3.8 million, RNC $2.5 million, Priorities USA $1 million, American Crossroads $940,000. Note that Crossroads GPS is outspending the Romney camp right now, and the Koch Brothers’ Americans for Prosperity has booked a multimillion buy slated to begin next week.
A lonely exception:
[O]ne place where Team Obama has a definite ad-spending edge over Team Romney is on Hispanic media — a total of $6.1 million to $521,000.
The campaigns and outside groups aren't just buying up TV airtime this fall; online ad space is running out as well:
Search ads and display ads are more plentiful and are still available to campaigns. The ads in question are those 15- and 30-second spots that automatically play before videos on YouTube, Yahoo, AOL and other sites — and they’re either sold out in some markets or will be auctioned off at record prices, insiders tell POLITICO.
Lastly, MoveOn.org is a happy warrior when it comes to painting Romney as rich and out of touch (the scope and size of the ad buy is unknown):
Ad War archive here.