Trump has lost some support among members of his own party. Seventy-seven percent of Republicans support him now, down from 84 percent before the Access Hollywood tape and allegations of sexually aggressive behavior surfaced.

Hillary Clinton opened up a wide lead among women voters after the first presidential debate and she continues to get strong support from that group, leading Trump by 19 points among them. If this advantage holds on Election Day, it would be the largest margin for a Democrat among women going back to 1972 when exit polls were first conducted. Trump has lost some ground with men and older voters. He now has just a two-point edge among men; he led by 11 points earlier this month.

Trump leads with white voters overall, including white men, but the race is close among white women. Republican Mitt Romney won white women by 14 points in 2012, according to exit polls.