"He was quite eloquent in saying that he didn't give a sh-t if people were scaring him, and he wasn't frightened, and he was going to stand his ground, " she said.

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To a large extent, it doesn't matter how persuasive Clinton might have been on Monday, or how eloquent senatorial candidate Barack Obama came off Tuesday, or even how strong a performance John Edwards, Kerry's vice presidential pick, turned in Wednesday.

CNN: At stake Thursday: Crunch time for Kerry