
In a set of dueling interviews aired Sunday night, President Obama conceded his "biggest disappointment" is that he hasn't significantly changed the tone in Washington since taking office -- and acknowledged sometimes his campaign ads go "overboard" and contain "mistakes."
Mitt Romney, meanwhile, touted his campaign's competitiveness as he emerged from a rocky week. "We've got a campaign which is tied with an incumbent president to the United States," Romney told CBS' "60 Minutes."
The Republican presidential nominee said his campaign, despite heat from the media and grumbling from some conservatives, "doesn't need a turnaround." Romney exp
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