Bitter-gate - Clinton and Obama exchange blows with new ads

Barack Obama and Hillary Clinton continue to exchange ever more ferocious blows over the "Bitter-gate" controversy. In her latest ad to hit the airwaves of Pennsylvania, she accuses him of being elitist and out-of-touch with ordinary Americans, wheeling out a series of slightly whiney supporters to bolster her point. He immediately responded with a new ad claiming that her attacks constitute the same old dirty Washington politics, whereas he, on the other hand, represents - yes, you guessed it - a change.

Watch the ads below and decide for yourself who's right.