I am aware all the following has been stated in this thread already,
Skiing is an incredibly expensive sport, and most of the traffic on NS comes from the under 18 crowd, I imagine, and more often than not the average kid on NS is a white, middle-upper class, that descends from a fortunate family. A lot of the persons in this bracket are incredibly uninformed, and have their parents, that may happen to be conservative, shove their politic-dicks down their throat, just like their religion-dicks.
l have a liberal view on most issues, (Abortion, Drugs, Healthcare, Gay Marriage, Equal Rights) but I am also quite informed and do actually know what the fuck I am talking about.
OP, I am also in disagreement that you seem to think NS is vastly conservative, I would argue the opposite, and that the only reason it may seem that way, is because conservatives are more rigid in their controversial views, such as abortion, drugs, and gay marriage, and with that said, they are more likely to respond to a polar opposite view. The OP of such a thread assumes that all of his party agree with him, and they probably do, that is why there are only 2. All of the people with a different opinion on the matter will probably disagree, showing their stance and this creates the sight that a majority leans a different way.
Going back to the majority of NS population being young, and well, young people are inherently stupid as fuck; (Go read Facebook for 5 minutes and tell me there are more statuses about Curiosity landing than how much people love One Direction and if they think Snooki will make for a good mother) these young people, being dumb, do not see things rationally, and with their parental impact, they would clearly lean in a direction that may not be how they actually will see things later on after they experience life in a capacity. Young people will always evolve and become different after time, that is how life works. I do believe that the majority of NS, if they actually think and look at both sides of an argument, compare and contrast, they would lean to the liberal side. After all, NS isn't a huge community, so this doesn't prove for a huge sample size, but also NS is comprised of one basic type of individual, and after all, one basic type of individual leads to one basic view.