Obama accused of 'hit job' in toxic White House race

(Yahoo News) - A poisonous new exchange erupted on the Democratic campaign trail Wednesday as former president Bill Clinton accused his wife's chief rival Barack Obama of a political "hit job."

Hillary Clinton insisted that Democratic wounds would heal in time for the party to recapture the White House in November's election, but the bad blood was spilt anew as Obama himself came out firing against his tag-team opponents.

The running battles on the Democratic stump have sparked disquiet among party grandees heading into South Carolina's Democratic primary on Saturday and a slew of contests in more than 20 states on "Super Tuesday," February 5.