Why are US tourism areas leaning Dem?

[Sol]

Depends on the industry. Ski areas, as is generally the case in the rockies, tends to be quite left-wing. Tourist areas also have many low income  service people who form a significant bloc. There are also some places that cater to a white liberal clientele (sometimes LGBT) , such as Key West. It think this is also the case in Western Mass.

Beaches often are quite conservative though. There is usually a retiree element.

[Sol]

I think Oldiesfreak land is the Dutch Reform areas around Grand Rapids.