WASHINGTON — Standing outside a Starbucks in Sarasota, U.S. Rep. Katherine Harris was berating a campaign aide as customers at outdoor tables sat watching. Two days earlier, she had left some books in the aide's car as he drove her to campaign events in Florida. That night, when she returned to Washington, she called the aide and told him to send the books to her right away. He sent them the next morning by FedEx, but Harris returned to Sarasota that day before the books arrived. "She kept saying 'I need those books. Why didn't you get them to me?'...