RICHMOND, Va. — Senators Barack Obama and Joseph R. Biden Jr. seldom see each other as they campaign for the Democratic ticket. And they talk only occasionally. But on Wednesday, Mr. Obama delivered a long-distance message to his running mate.
“I think Joe sometimes engages in rhetorical flourishes,” Mr. Obama said, gently chiding the vice-presidential nominee as he sought to sweep aside a dustup Mr. Biden touched off when he predicted that a world crisis would test Mr. Obama during his first six months in office.
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