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The first presidential debate should take place as planned in Mississippi this evening. John McCain suggested pulling out of the debates to work on the financial crisis that's gripping the nation – but Barack Obama insisted the show must go on, and McCain is now on his way to Mississippi. One person who certainly won't be participating in the debate is independent candidate Ralph Nader. I caught up with Nader as he makes his way to California to campaign in the state. He explains how third parties are consistently locked out of the debates.