Democratic Senate candidates hurl charges, but won't debate before primary

The already-heated race for the Democratic nomination for U.S. Senate turned even nastier Wednesday as the two leading candidates, on the campaign trail in South Florida, hurled even more vitriolic rhetoric at each other.

U.S. Rep. Patrick Murphy, the Democratic Party establishment's favorite, said his opponent, U.S. Rep. Alan Grayson, is so unfit for public office that if he somehow wins the Aug. 30 primary, he couldn't endorse him in the November election.

Murphy also said Grayson is such a pariah that he pulled the plug on the single pre-primary debate that had been scheduled.

Grayson, an outspoken liberal known for colorful rhetoric, hit back even harder at Murphy.

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