A new TV ad featuring former President Bill Clinton is the latest evidence of the deliberate and potentially risky advertising strategy adopted by the Obama campaign.
The campaign is deploying its strongest material in a heavy ad blitz months before the general election, trying to inoculate against a barrage of commercials from Mitt Romney and Republican independent groups expected in the fall.
Ad spending is expected to hit $1.1 billion in the 2012 presidential contest. About one-third of that has been spent so far, according to Kantar/Campaign Media Analysis Group which tracks campaign ads.
Obama's campaign has frontloaded its ads throughout the spring and mid-summer. The Romney campaign and affiliated groups have only recently caught up and started to exceed the president's spending before launching a fall advertising push.