Stock markets wobble on uncertainty in US election

World shares and US futures are volatile as investors await results of tight races in battleground states that will determine the outcome of the US presidential election. Markets were jolted on Wednesday but soon recovered after President Donald Trump, in an early morning appearance at the White House, made premature claims of victories in several key states. As of 6 a.m. Eastern time, Trump and his Democratic challenger Joe Biden still were awaiting results from a handful of key states. Most po