Why did Sanders only get 55.7% in Wyoming?

[Sprouts Farmers Market ✘]

Maybe Democrats are also more moderate in Wyoming?

Colorado, Idaho, and Utah all have sizable urban areas, ski resorts, and college campuses that provide more left-wing voters for the Democrats. These states are also less oil/gas dependent. If I remember correctly Wyoming voters are on average some of the most conservative in the country even compared to the Deep South.

Oklahoma moderates loved Bernie. He draws a ton from the moderate wing of the party.