Electoral battles

Poll: Hillary Clinton's support falls by 21 points as Donald Trump gains

Hillary Clinton's support has fallen by 21 percentage points since July, according to the latest national ABC News/Washington Post poll released Monday.

Meanwhile, support for Donald Trump has surged to 33 percent, a 9-point jump during the same period and a further sign that the billionaire business mogul is in a commanding position in the Republican primary ahead of this week's GOP debate.