According to a WSJ article today, Trump needs to win PA, FL, OH, and NC in order to beat Hillary. Apparently he needs all of those states. Three out of four won’t do it.
They say that he’s currently trailing in the polling in all those states, but narrowly.
Using simplest path, Trump needs to flip 63 electoral votes over Romney in 2012.
The closest states where Obama edged Romney were:
(lost by % of vote) (EVs) EV total
Florida (<1%) (29) 29
Ohio (1.9) (18) 47
Virginia (3) (13) 60
Colorado (4.7) (9) 69