U.S. News & World Report - With rounds to fight running out, the self-described Rocky Balboa of politics will soon be forced to assess the damage sustained by the most expensive primary bout in history. Sen. Hillary Clinton doled out $6.4 million of her own money to her campaign since April, her campaign told reporters this week. That brings her total cash outlay to more than $11 million since January. And she's not ruling out spending more as she plans to compete in the six remaining contests. If she plans to knock out heavyweight fundraising champ, Sen. Barack Obama, she may have no other choice.