1) his hair
2) his (supposed) psychological state, e.g. [1]
3) "deplorables" - we all know what and who is meant by this and very few or none of these are responsible for their situation
4) his family name
I like how Dilbert's author put it. This is why Trump won [2], or, more humorously [3]
[1] http://www.theatlantic.com/magazine/archive/2016/06/the-mind... [2] http://blog.dilbert.com/post/152293480726/the-bully-party [3] https://www.youtube.com/watch?v=sb7XaRPFPjI https://www.youtube.com/watch?v=WVKC0egDBpk and https://www.youtube.com/watch?v=dvpDwtYl5TA