Presumably they associate Trump with gambling. The difference between Utah and Nevada is quite apparent especially when you cross the border on the I-80 between Wendover UT and West Wendover NV.
However the large casinos in West Wendover must be for Salt Lake City folk who want to gamble because there aren’t many other people around there.
And if Utahns don’t want to gamble, then they should choose Trump over any Democrat.
During the ride in the nchartered buses; from SLC to the border; folks can observe wonderful artwork in the salt along the north side of the highway.
https://www.google.com/intl/en_ALL/maps/streetview/