Hillary Clinton enters the final month before Election Day with a 10-point lead over Donald Trump in Pennsylvania, a crucial battleground state that has become less promising for the Republican presidential nominee since his performance in the first debate.

The latest Monmouth University poll of likely voters in Pennsylvania shows Clinton edging Trump 50-40 percent in the Keystone State, marking a 2-point gain since late August. Five percent of voters currently support Libertarian nominee Gary Johnson, while 2 percent back Green Party candidate Jill Stein.