The masterclass was actually taking most of Obama's campaign people, that was the first masterstroke. The technical side of running a campaign with respects to which states to target and data stuff that the media doesn't cover is actually more important. The Republicans tried the same "enthusiasm gap" talking points in 2012 and lost, Trump is even more delusional about changing the map relying on media appearances to do the job for him. The idea of trying to turn PA and MI red always seemed like a long shot but the media think angry white people in the Midwest are enough to remake the map. There was even a time when some in the media were seriously discussing Trump's chances in states like New Jersey. Trump's campaign was run unprofessionally , they didn't understand the difference between a national and primary campaign, they see huge crowds and think that means something. I saw Larry Sabato explaining to Megyn Kelly why rallies are not indicative of support, she was discussing polling and said look at Trump's rallies to which Sabato told her that national electorate is 135 million and having a few thousand people at a rally pales in comparison to the national numbers.