Wall Street falls as election uncertainty rattles investors

U.S. stocks opened lower on Wednesday, with the S&P 500 falling for the seventh straight day as a tightening race for the White House prompted investors to seek safe-haven assets such as gold. Investors are rethinking their long-held bets of a Nov. 8 victory for Democrat Hillary Clinton amid signs that her Republican rival Donald Trump could be closing the gap. While Clinton held a 5 percentage point lead over Trump, according to a Reuters/Ipsos opinion poll released on Monday, some other po