Contrary to what you may think, plenty of us conservatives don't have an issue with the government. That's doubly true for the DoE, which is one of the more important bureaucracies we've currently got in place.
Besides, it's Idaho. The state is redder than an embarrassed ruby. It's called the bastion of conservatism for a reason, haha, and that means DoE doesn't have much choice in who it hires.