The NW areas of Alaska loved Castle:
Precinct 38-802 Akiak: Clinton 47.9, Castle 21.9, Trump 15.6
Precinct 38-832 Lower Kalskag: Clinton 53.9, Castle 14.1, Johnson/Stein: 10.3, Trump/Write-ins: 5.2
Precinct 39-930 Pilot Station: Clinton 63.8, Castle 13.4, Trump 8.7
Precinct 39-932 Savoonga: Clinton 67.2, Castle 13.8, Trump 9.1
Precinct 40-022 Kobuk: Clinton 35.7, Castle 26.2, Write-ins 14.3, Trump 11.9, Johnson 9.5
Precinct 40-034 Point Lay: Clinton 37.5, Castle 21.9, Trump 18.8, Write-ins 14.1
Precinct 40-330 Hughes: Clinton 56.8, Castle 18.9, Trump/Johnson 8.11
I'm not surprised that Alaska Natives aren't Trump fans...but any explanation for why Castle picked up so much support? That can't just be people randomly voting for him on the ballot as an alternative. Way too much support for it to not be concerted somehow.