How AP rates the presidential race and the Road to 270
To win, he must sweep all of the toss-up battlegrounds and go on to pick off at least one state where the Democratic nominee now has a solid lead.
The analysis considers preference polling, recent electoral history, demographic trends and campaign priorities such as advertising, travel and on-the-ground staff.
In Pennsylvania, won by the Democratic nominee in every election since 1992, multiple polls conducted in July and August give the former secretary of state double-digit leads.
In Virginia, which handed its electoral votes to Barack Obama twice but was once a solidly Republican state, several August surveys show high single-digit to double-digit leads for Clinton.
Trump is left running from behind while also defending traditional Republican strongholds such as Georgia, where a recent Atlanta Journal-Constitution poll suggests even that may be in play for Clinton.