US stock futures rise after midterms: Why are Dow Jones futures up nearly 800 points despite a Democratic sweep? S&P 500, Nasdaq gain as AMD and Nvidia stocks climb

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Why are US stock futures rising after Democrats win the Senate and House? Dow leads Wall Street rally as AMD, Nvidia and semiconductor stocks gain. Earlier, at 06:02 ET, Dow futures were up 801 points, or 1.6%. S&P 500 futures were up 80 points, or 1.1%, and Nasdaq 100 futures were up 286 points, or 1.0%.