Campaigning in Alaska in fall/winter sounds like a nightmare. Though I'd imagine if you were a presidential candidate and you were going to go, you'd basically be going to Juneau and nowhere else, since that's where the bulk of the population is and it is a pretty easily accessible city with a moderate climate. No one in their right mind is going to go to the Aleutian Islands or venturing through the North Slope to go to villages with 30 people in them. No disrespect intended to the people who live up there but it's just not worth it.
Umm, Anchorage is the largest city, not Juneau.