McCain vows to whip Obama in last debate

Republican John McCain dialed back personal attacks on Democrat Barack Obama over the weekend, but vowed he would whip his opponent's "you know what" when they clash this week in their final presidential debate on Wednesday.

With three weeks remaining until election day, McCain is trailing in the polls and struggling under the heavy burden of his association with Republican President George W. Bush _ and the blame that attaches to the incumbent Republicans for the crumbling financial markets.

Last week, both McCain and running mate Alaska Gov. Sarah Palin appeared to be trying to shift attention away from the troubles confronting the American …