U.S. election, rate uncertainty rattle Wall Street

Stocks pared losses after falling steeply in early afternoon trading as the S&P 500 breached a key technical level. The tumultuous presidential race between Democrat Hillary Clinton and Republican Donald Trump has appeared to tighten in the past week after news that the FBI was investigating more emails as part of a probe into Clinton's use of a private email system. "There is concern over Trump being unexpected, because the market has really priced in a Clinton win and it hasn’t price