National Journal notes that Mitt Romney and his allies spent $12.4 million on ads for the week, June 20-June 26.
Barack Obama and his allies? About $9 million.
In total, Republicans outspent Democrats in 10 of the 11 swing states where advertisements ran this week.
There's been a bevy of articles this week on just what that dynamic means, but it all boils down to one reality -- Romney can afford to play offense in traditional blue states like Wisconsin and Pennsylvania.