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A slowdown in China manufacturing activity has resulted in world market sell-off, as well as sharply lower U.S. stock index futures, following the worst month for the S&P 500 in more than three years.
"Mad Money" host Jim Cramer reveals the most polarizing stock on the averages.
Gov. Scott Walker describes himself as just a normal guy with a wife, two kids and a Harley. He discusses his Reagan-inspired policies and what sets him apart from the other Republican presidential candidates with CNBC's John Harwood.