Today on Bloomberg Kellyanne said they are adding Michigan to the buy. So Trump is buying in a Obama state that Romney didn't target, yet Team Clinton have resisted the urge to go beyond NC with TV. If they went up in AZ, GA, MO, IN or UT then Trump would likely have to follow. And since Clinton has more money, that helps them.
How expensive are TV ads in Utah, and what percentage of the population do they reach?
I would imagine radio ads might be more effective in many remote and rural parts of the state, as well as extremely inexpensive.... same might go for Alaska if one wanted to dip the toes in the water.