Sen. Barack Obama could withstand any last-minute "swift-boat" attacks from Republicans on his race or past drug use because winning the grueling contest for the Democratic nomination will make him the "toughest, baddest candidate on the block," he tells 60 Minutes correspondent Steve Kroft....
...Asked by Kroft if he will be able to endure attacks from "swift-boating" Republicans who may use his race or his youthful drug use against him, Obama replies, "Whoever wins this Democratic primary...they're the toughest, baddest...
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